MultiZone Gas Monitors
• HGM-MZ (Halogen)
• AGM-MZ (Ammonia)
• CO2-MZ (Carbon Dioxide)
Installation • Operation • Maintenance
UL 61010-1
CAN/CSA 22.2 No. 61010.1
EN 14624
Instruction P/N: 3015-5074
Rev. 13
January 2015
Product Leadership • Training • Service • Reliability
Multi-Zone Gas Monitors
WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in
material and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications.
Bacharach’s liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at
Bacharach’s option, of this Product or parts thereof returned to Seller at the factory of manufacture and
shown to Bacharach Inc.’s reasonable satisfaction to have been defective; provided that written notice of
the defect shall have been given by Buyer to Bacharach Inc. within two (2) years after the date of delivery
of this Product by Bacharach, Inc.
Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and
Buyer’s remedy under this warranty of title are limited to the removal of any title defects or, at the election
of Bacharach, to the replacement of this Product or parts thereof that are defective in title.
The warranty set forth in Paragraph 1 does not apply to parts that the Operating Instructions designate as
having a limited shelf-life or as being expended in normal use (e.g., filters).
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I)
ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR
TORT, WHETHER OR NOT ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED.
The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other
remedies including, without limitation incidental or consequential damages. No agreement varying or
extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless
in writing, signed by a duly authorized officer of Bacharach.
Register your warranty by visiting
www.MyBacharach.com
Product improvements and enhancements are continuous; therefore the specifications and information
contained in this document may change without notice.
Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages
in connection with the furnishing, performance, or use of this material.
Patent 6,590,690
Copyright © 2000–2015, Bacharach, Inc., All Rights Reserved
No part of this document may be photocopied, reproduced, or translated to another language without the
prior written consent of Bacharach, Inc.
®
BACHARACH is a registered trademark of Bacharach, Inc. All other trademarks, trade names,
service marks and logos referenced herein belong to their respective owners.
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Table of Contents
SECTION 1. INTRODUCTION..................................................................................................................... 1
1.1.
1.2.
1.3.
1.4.
1.5.
1.6.
About This Manual .............................................................................................................................. 1
Warnings and Cautions ....................................................................................................................... 1
Safety Precautions .............................................................................................................................. 1
1.3.1. Hazardous Areas .................................................................................................................... 1
1.3.2. Combustible and Flammable Gases ...................................................................................... 2
1.3.3. AC Power Supply ................................................................................................................... 2
1.3.4. Protective Grounding.............................................................................................................. 2
1.3.5. Explosive Atmosphere............................................................................................................ 2
1.3.6. Proper Exhaust Venting ......................................................................................................... 2
1.3.7. Accessing the Interior of the Monitor ...................................................................................... 2
1.3.8. Misuse and Modifications to the Instrument ........................................................................... 3
1.3.9. In Case of Malfunction............................................................................................................ 3
1.3.10. Fusing ..................................................................................................................................... 3
1.3.11. Installation Category............................................................................................................... 3
1.3.12. Altitude Limit ........................................................................................................................... 3
1.3.13. Cleaning ................................................................................................................................. 3
Key External Hardware Components .................................................................................................. 4
Functional Overview ............................................................................................................................ 4
1.5.1. General Description................................................................................................................ 4
1.5.2. Communications Options ....................................................................................................... 5
1.5.3. Understanding Monitoring Levels ........................................................................................... 5
1.5.4. Response to the Presence of Multiple Refrigerants (HGM Only) .......................................... 5
1.5.5. Suggested Location of Sampling Points ................................................................................ 5
1.5.6. Locating a Remote Display (Optional) ................................................................................... 6
Specifications ...................................................................................................................................... 7
SECTION 2. INSTALLATION ...................................................................................................................... 9
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
2.8.
Installation Considerations .................................................................................................................. 9
2.1.1. Warnings and Cautions .......................................................................................................... 9
2.1.2. Inspection ............................................................................................................................... 9
2.1.3. Location of the Monitor ........................................................................................................... 9
2.1.4. Mounting Instructions ............................................................................................................. 9
Connecting Gas Sample Lines .......................................................................................................... 10
2.2.1. Overview............................................................................................................................... 10
2.2.2. Tubing Considerations ......................................................................................................... 11
2.2.3. Connecting Purge Line ......................................................................................................... 11
2.2.4. Connecting Exhaust Line ..................................................................................................... 11
2.2.5. Connecting Sample Intake Lines ......................................................................................... 11
2.2.6. Installing an Optional Splitter Kit .......................................................................................... 12
2.2.7. Connecting the Water Trap .................................................................................................. 12
Interior Components .......................................................................................................................... 13
Electrical Wiring ................................................................................................................................. 13
Connecting Communications Devices .............................................................................................. 15
2.5.1. Remote Display Module (RD) Connection ........................................................................... 15
2.5.2. Integrating with Building Management Systems .................................................................. 15
2.5.3. Larger Integrated Systems ................................................................................................... 15
2.5.4. Changing Terminator Switch Settings .................................................................................. 16
2.5.5. Personal Computer .............................................................................................................. 16
Terminating Multiple Monitors ........................................................................................................... 17
Connecting to a Building Management System ................................................................................ 17
PC Software ...................................................................................................................................... 18
2.8.1. Operation .............................................................................................................................. 18
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2.8.2. Saving and Sending Programs ............................................................................................ 20
2.8.3. Trend Data ........................................................................................................................... 20
2.8.4. Converting the TREND Text File to a Microsoft Excel File .................................................. 20
2.8.5. Saving and Printing Screens and Logs ................................................................................ 20
2.8.6. USB Type Laptops ............................................................................................................... 20
2.9. Optional Current Loop Interfaces ...................................................................................................... 21
2.9.1. Optional 4–20 mA DC Outputs ............................................................................................. 21
2.9.2. 4-20 mA DC Connections..................................................................................................... 22
2.10. Connecting External Alarms .............................................................................................................. 23
2.10.1. Overview............................................................................................................................... 23
2.10.2. Connection ........................................................................................................................... 23
SECTION 3. SETUP PROGRAMMING ..................................................................................................... 25
3.1.
3.2.
3.3.
3.4.
3.5.
3.6.
3.7.
Initial Power Up ................................................................................................................................. 25
Data Display Screen .......................................................................................................................... 25
Navigating to the 1st Setup Screen ................................................................................................... 25
Navigating to the 2nd Setup Screen ................................................................................................. 25
3.4.1. Location ................................................................................................................................ 26
3.4.2. Number of Zones Installed ................................................................................................... 26
3.4.3. Alarm Acknowledge Mode.................................................................................................... 26
3.4.4. Audible Alarm ....................................................................................................................... 26
3.4.5. Zone Hold ............................................................................................................................. 27
3.4.6. Detection Limit ...................................................................................................................... 27
3.4.8. Loop Mode ........................................................................................................................... 27
3.4.7. Loop2 Factor ........................................................................................................................ 27
3.4.9. Re-Zero Mode ...................................................................................................................... 28
Navigating to the 3rd Setup Screen .................................................................................................. 28
3.5.1. Overview............................................................................................................................... 28
3.5.2. Baud Rate ............................................................................................................................ 28
3.5.3. Node Address ....................................................................................................................... 28
3.5.4. Password .............................................................................................................................. 28
Additional Service Features .............................................................................................................. 29
3.6.1. Service Timeout ................................................................................................................... 29
3.6.2. DET Digipot .......................................................................................................................... 29
3.6.3. Node Address ....................................................................................................................... 30
3.6.4. Sensor Temperature Coefficient (For Factory Use Only) .................................................... 30
3.6.5. Password .............................................................................................................................. 30
3.6.6. Acquiring Temperature Coefficient (For Factory Use Only) ................................................. 30
3.6.7. IR Digipot .............................................................................................................................. 30
Establishing the CO2 Sensor Baseline .............................................................................................. 30
SECTION 4. GENERAL OPERATION ...................................................................................................... 31
4.1.
4.2.
4.3.
4.4.
iv
Functional Overview .......................................................................................................................... 31
The Zone Setup Screen .................................................................................................................... 31
4.2.1. Location ................................................................................................................................ 31
4.2.2. Gas/Refrigerant Type ........................................................................................................... 31
4.2.3. Distance................................................................................................................................ 32
4.2.4. Zone Temperature................................................................................................................ 32
4.2.5. Current Detection Reading ................................................................................................... 32
4.2.6. Log Interval ........................................................................................................................... 32
Navigating to the 2nd Zone Setup Screen ........................................................................................ 32
4.3.1. Leak Level ............................................................................................................................ 33
4.3.2. Spill Level ............................................................................................................................. 33
4.3.3. Evacuation Level .................................................................................................................. 33
4.3.4. Re-Setting the Peak PPM Value .......................................................................................... 33
Alarms ............................................................................................................................................... 33
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4.5.
4.6.
4.7.
4.8.
4.9.
4.4.1. Functional Overview ............................................................................................................. 33
4.4.2. Responding to Alarms .......................................................................................................... 34
4.4.3. Alarm Detail Screen ............................................................................................................. 34
4.4.4. Acknowledging Alarms ......................................................................................................... 35
4.4.5. Silencing an Alarm ............................................................................................................... 35
4.4.6. Clearing the Alarm Event Log .............................................................................................. 36
System Faults .................................................................................................................................... 36
4.5.1. Functional Overview ............................................................................................................. 36
4.5.2. Navigating to the Fault Screen ............................................................................................. 37
4.5.3. Critical Faults ........................................................................................................................ 37
4.5.4. Non Critical Faults ................................................................................................................ 38
4.5.5. Reset to Factory Default Settings ........................................................................................ 38
4.5.6. Clearing System Faults ........................................................................................................ 38
4.5.7. Viewing Fault Log ................................................................................................................. 39
4.5.8. Viewing Flow Log ................................................................................................................. 39
The Trend Screen ............................................................................................................................. 40
4.6.1. Navigating to the Trend Screen ........................................................................................... 40
The Calibration Screen ...................................................................................................................... 40
4.7.1. Overview............................................................................................................................... 40
4.7.2. Navigating to the Calibration Screen.................................................................................... 41
4.7.3. Calibration Procedure (HGM and AGM Only) ...................................................................... 41
4.7.4. Adjusting Calibration Factor (HGM and AGM Only) ............................................................ 41
4.7.4. CO 2 Atmospheric Concentration .......................................................................................... 42
4.7.6. Programming New Gases (HGM Only) ................................................................................ 42
Zone Hold Mode .................................................................................................................................. 43
The Diagnostic Screen ...................................................................................................................... 44
4.9.1. Navigating to the Diagnostic Screen .................................................................................... 44
4.9.2. Diagnostic Screen Overview ................................................................................................ 45
SECTION 5. MAINTENANCE.................................................................................................................... 47
5.1.
5.2.
5.3.
Replacement Parts Overview ............................................................................................................ 47
Replacement Parts and Optional Accessories .................................................................................. 48
Troubleshooting ................................................................................................................................. 50
APPENDIX A. RECOMMENDED REFRIGERANT GAS ALARM SETTINGS ........................................ 53
APPENDIX B. RS-485 COMMUNICATIONS PROTOCOL ..................................................................... 55
B.1. Overview............................................................................................................................................ 55
B.2. MODBUS RTU Protocol .................................................................................................................... 55
B.3. MZ MODBUS RTU Operation ........................................................................................................... 55
B.3.1. Overview............................................................................................................................... 55
B.3.2. Protocol Details .................................................................................................................... 55
B.3.3. MZ Monitor Polling ............................................................................................................... 56
B.3.4. Network Topologies .............................................................................................................. 56
B.3.5. Key Comm Protocol Parameters .......................................................................................... 56
B.3.6. MODBUS Exception Responses .......................................................................................... 57
B.3.7. MODBUS Gas Enumeration................................................................................................. 57
B.4. Standard Register Summary ............................................................................................................. 58
B.4.1. Dynamic Register Summary (2000 Series; R; Function Code 03) ...................................... 58
B.4.2. Dynamic Register Summary (2000 Series; R; Function Code 03) ...................................... 59
B.5. Block Mode Register Summary ......................................................................................................... 62
B.5.1. Summary of Registers .......................................................................................................... 62
B.5.2. System Data Register 0x0010 (16 Dec) (R/W, 54 Bytes) .................................................... 62
B.5.3. Status Register 0x001 (17 Dec) (R/W, 10 Bytes) ................................................................ 63
B.5.4. Fault Code Table .................................................................................................................. 64
B.5.5. Zone Data Register 0x12xx (R/W, 78 Bytes) ....................................................................... 64
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B.5.6.
B.5.7.
B.5.8.
B.5.9.
B.5.10.
B.5.11.
B.5.12.
B.5.13.
B.5.14.
B.5.15.
B.5.16.
B.5.17.
B.5.18.
B.5.19.
Alarms and Alarm Acknowledge .......................................................................................... 65
Date Time Register 0x0015 (21 Dec) (R/W, 14 Bytes) ........................................................ 65
Sensor Data Register 0x0016h (22 Dec) (R, 82 Bytes) ....................................................... 66
Release Zone Hold Register 0x0017h (23 Dec) (W, 10 Bytes) ........................................... 66
Hold Zone Register 0x0018h (23 Dec) (W, 10 Bytes) .......................................................... 66
MZ Hold Mode ...................................................................................................................... 66
Fault Log Register 0x1900-01 (6400-6401 Dec) (R, 302 Bytes).......................................... 67
Flow Log Register 0x001F (31 Dec) (R, 142 Bytes) ............................................................ 67
Alarm Log Register 0x1A00-02 (6656-58 Dec) (R, 582 Bytes) ............................................ 67
Service Mode Register 0x001B (27 Dec) (W, 10 Bytes) ...................................................... 67
Release Service Mode 0x001C (28 Dec) (W, 10 Bytes) ...................................................... 67
MZ Service Mode ................................................................................................................. 68
PPM Register 0x001E (30 Dec) (R, 32 Bytes) ..................................................................... 68
Zone Log Registers 0x3xyy (R, 1502 Bytes)........................................................................ 68
APPENDIX C. SYSTEM MENU MAP ....................................................................................................... 69
APPENDIX D. AGENCY APPROVALS ................................................................................................... 73
APPENDIX E. SERVICE CENTERS ........................................................................................................ 75
INDEX ......................................................................................................................................................... 77
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SECTION 1. INTRODUCTION
1.1. About This Manual
Thank you for investing in a Bacharach Multi-Zone Gas Monitor. To assure operator safety and the proper
use of the monitor please read this manual. It provides important information on the installation, operation,
maintenance, and servicing of the monitor and display module.
If you have a working knowledge of your gas monitor, you will find this manual useful as a reference tool. If
you are new to the use of gas monitors, this document is educational in the principles of gas detection and
the proper operation of this device.
1.2. Warning and Caution Conventions
When used in this manual or as labeled on the gas monitor, the following hazard symbols and/or
associated words are defined as follows.
WARNING: This symbol and/or the use of the word WARNING indicates a potential
hazard associated with the use of this equipment. It calls attention to a procedure,
practice, condition, or the like, which if not correctly performed or adhered to, could result
in death or serious injury.
WARNING: This symbol and/or the use of the word WARNING indicates a potential
hazard from electrical shock. It calls attention to a procedure, practice, condition, or the
like, which if not correctly performed or adhered to, could result in death or serious injury.
CAUTION: This symbol and/or the use of the word CAUTION indicates a potential hazard
associated with the use of this equipment. It calls attention to a procedure, practice,
condition, or the like, which if not correctly performed or adhered to, could result in minor or
moderate injury.
IMPORTANT: The use of the word IMPORTANT in this manual calls attention to a
procedure, practice, condition, or the like, which if not correctly performed or adhered to,
could result in incorrect performance of or damage to the equipment and may void the
warranty.
1.3. Safety Precautions
WARNING: This instrument has not been designed to be intrinsically safe for use in areas
classified as hazardous locations. For your safety, DO NOT use it in hazardous (classified)
locations.
WARNING: This is NOT a safety device. Some gases which this instrument can detect
may be combustible/flammable. When properly configured, this instrument is designed to
alarm at concentrations that are lower than the explosive limit of the gas. As such, it is the
buyer’s responsibility to initiate an immediate planned response to any gas leaks as soon
as they are detected. This equipment should NEVER be used to measure or sample
gases at or above their respective lower explosive limits.
IMPORTANT: The gas monitor uses a universal power supply that is capable of accepting
inputs of 100 to 240 VAC, 50/60 Hz. The monitor’s power consumption is 20 Watts. It is
highly recommended that the monitor be connected directly to the AC power source,
preferably on its own circuit with UPS or surge protection.
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WARNING: A switch or circuit breaker must be included in the building installation. The
switch must be in close proximity to the monitor and within easy reach of the operator. The
switch must be clearly marked as the disconnecting device for the equipment.
WARNING: Under no circumstances should the monitor be operated without connection
to a protective ground. Doing so poses a potential shock hazard and is also a violation of
electrical safety standards applicable to this type of equipment.
WARNING: Do not operate this equipment in the presence of flammable liquids, vapors,
or aerosols. Operation of any electrical instrument in such an environment constitutes a
safety hazard.
WARNING: It is imperative that the exhaust port on this instrument be properly vented as
described in this manual. Failure to do so may constitute a safety hazard.
WARNING: Extreme care should be exercised when accessing the interior of the monitor.
Only qualified electrical maintenance personnel should make connections and perform
adjustments. Always remove AC power before opening the monitor’s enclosure.
WARNING: The protection provided by the monitor may be impaired if the monitor is used
in a manner not specified by Bacharach, Inc. Modifications to this monitor, not expressly
approved, will void the warranty.
WARNING: Do not continue to use this equipment if there are any symptoms of
malfunction or failure. In the case of such occurrence, de-energize the power supply and
contact a qualified repair technician or the nearest Bacharach Service Center.
WARNING: This device uses type “F” fuses (F1 and F2) rated at 1.0 A, 250 VAC.
Replace ONLY with Bacharach-approved fuses.
WARNING: Electrical installation should be performed by a certified electrician, and must
comply with all applicable NEC/CEC and local electrical safety codes.
IMPORTANT: Use ONLY the provided knockouts for electrical and communications
wiring. Drilling into the box will void the warranty.
IMPORTANT: This device is classified as Installation Category II, Pollution Degree II, as
defined by UL.
IMPORTANT: This device is designed for operation at or below an altitude of 6,562 ft
(2,000 m). Do not operate this device above this altitude limit.
NOTE: To clean the outside of the case use a dry cloth. To avoid shock hazard and/or
equipment damage, DO NOT use soap and water.
1.4. Key External Hardware Components
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Figure 1-1. Multi-Zone Monitor Front View
NOTE: Mounting cutouts are located on the back of the monitor, and are visible from
inside the Multi-Zone monitor. A mounting template is also shipped with the monitor. For
mounting information, refer to the mounting instructions on page 8.
Standard Accessories for a 4-Point System
QTY
5
1
3
1
1
Description
Line-End Filters
Charcoal Filter (Halogen Gas Monitor Only)
End-of-line Water-Stop Filter Assembly
T-Bolt Bracket (Halogen Gas Monitor Only)
Multi-Zone Instruction Manual
Part Number
3015-3420
3015-3125
3015-5512
3015-2969
3015-5074
1.5. Functional Overview
1.5.1. General Description
Gas monitors are specified to support compliance to federal, state and local safety codes governing
emissions. Avoiding significant loss reduces equipment replacement costs, maintains equipment efficiency,
promotes safety, and protects the environment.
The Bacharach Multi-Zone Monitor provides continuous monitoring of gas levels in up to 16 separate test
zones. The instrument is easily programmed to monitor a variety of gases (dependent on particular model)
and independent leak (small), spill (medium), and evacuation (large) levels may be designated for each
zone. The instrument also retains a log of previous readings that can be easily accessed for analysis.
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An audible alarm and front panel indicators are provided to signal alarm and fault conditions, and relay
contacts are provided that can be used to trigger external alarm devices in the event of a system fault, or if a
leak (small), spill (medium), or evacuation (large) level of gas is detected. The system also may be fitted
with and optional two-channel 4-20 mA current loop board for connection to remote monitoring equipment.
The multi-zone monitor requires only minor periodic maintenance such as the occasional replacement of
filters. The monitor incorporates active diagnostics that continuously check the system for proper operation.
A front panel indicator is provided to alert an operator of system malfunctions, and fault codes are generated
that enable the user to identify the cause of the fault.
1.5.2. Communications Options
The multi-zone monitor features full two-way communications via an RS-485 interface. MODBUS RTU is
the communications protocol standard. The instrument can be connected directly to a Building
Management System or it may be operated as a stand-alone system.
An RS-232C port is also provided for connection to a PC. This enables the monitor to be setup from a
personal computer. Refer to Appendix B for more information on communications protocols.
1.5.3. Understanding Monitoring Levels
Effective use of this instrument requires an understanding of what constitutes reasonable alarm set points
for the types of gas being monitored. Manufacturers define allowable exposure levels and threshold limit
values in units of parts per million (ppm). In a good “tight” installation these background levels will be
acceptably low and often do not require corrective action. You can reduce nuisance alarms and needless
service calls if the alarm levels are set at practical limits. Bacharach has developed recommended
monitoring refrigerant gas levels based on compliance to ANSI/BSR ASHRAE 15-2007 and ASHRAE
Safety Code 34-2007. These reference levels are listed in Appendix A.
Setting the monitor at these recommended alarm levels will satisfy the needs of most users. However, the
ppm levels generated by system leaks into the environment are greatly influenced by the volume of air in the
sampling area, air circulation, size of the leak, distance to the monitoring point, and a host of other variables.
In some cases the set points may need to be adjusted either up or down to achieve effective monitoring.
1.5.4. Response to the Presence of Multiple Refrigerants (HGM Only)
The HGM-MZ is a refrigerant level monitor, not a gas analyzer. You must program the monitor to test for a
specific refrigerant, and it will only return accurate concentration readings for that particular refrigerant. If
a leak occurs of another refrigerant gas type, the monitor may return incorrect readings.
Most applications only require detection of a single refrigerant and the problems that are associated with
monitoring multiple gases are rarely an issue. If there is a possibility of multiple refrigerants leaking in the
same sampling zone, then you should carefully consider which refrigerant compound you program the
unit to monitor.
1.5.5. Suggested Location of Sampling Points
At the point of a leak the gas is nearly pure. As the gas is dispersed into the air, the gas molecules diffuse,
causing a dilution of the original concentration. The monitor measures the concentration at the sample
collection point. Therefore, if the termination of the collection line is not at the exact point of the leak, the
unit will read a diluted mixture of the gas and air.
Gases of interest may be heavier or lighter than air and may collect above or below the point of the leak.
Therefore sampling point placement is critical and must take into account properties of the target gas and air
flow within the space. In general, sampling points should be located as close as possible to the sources of
potential leaks. If this is impractical, then alarm set points for that zone should be adjusted to compensate
for the dilution of the gas. General placement guidelines are shown below, but air-flow dynamics should also
be considered (e.g., consider the effects of exhaust fans which tend to draw target gas from the space).
4
•
HGM-MZ Halogen
Mount sampling points 6-18 inches above floor
•
AGM-MZ NH3 (Ammonia)
Mount sampling points 1-2 feet below ceiling
•
CO2-MZ CO2 (Carbon Dioxide)
Mount sampling points 4-6 feet above floor (breathing zone)
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DO NOT block any of the zones. Unused zones may be disabled by setting the distance parameter to
zero feet in the zone setup screen.
The MZ monitor should be centrally located in the mechanical room and be readily accessible for easy
visual monitoring and servicing. The combined length of sample tubing plus exhaust tubing should not
exceed 1200 ft (366 m) for any zone. The fresh air purge line should draw from an area that does not
contain any gas other than fresh air. The exhaust line should run to an outside location if possible.
NOTE: The combined length of the purge line and the exhaust line cannot exceed
500 feet.
Ideally, two to three pick up points spaced around each chiller will provide sufficient coverage. It may be
necessary to perform a smoke test of the mechanical room to determine the best locations. The smoke test
provides the pattern of air currents present in the mechanical room.
The MZ monitor should be kept dry. When used in a wet or humid area, it is highly recommended to use
the optional water stop accessory to avoid internal damage.
1.5.6. Locating a Remote Display (Optional)
The Remote Display (RD) Module should be mounted outside of the mechanical room, or just inside the
room’s doorway if the first option isn’t possible. This is the “split architecture design” for safety of the
operator. The RD can be located up to 4500 feet (1372 m) from the MZ monitor. The RD is the man
machine interface by which you program the MZ, acknowledge alarms and observe conditions inside of the
mechanical room. Note that there are two additional alarm relay contacts in the RD that can be
programmed to alarm on leak, spill, evacuate, fault, or monitor on conditions.
Figure 1-2. HGM-MZ (Halogen) and RD Placement in a Mechanical Room
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NOTE: The pickup points located on the floor in the above illustration are examples for
refrigerants which are heavier than air. Placement of pickup points should be determined
based on characteristics of the gas being monitored and ambient conditions of the sampling
area. (Air=28.9 g/mole, CO2=44.0 g/mole, NH3=17.0 g/mole, and halogens = 100+ g/mole.)
1.6. Specifications
HGM-MZ Specifications
Product Type
Multiple refrigerant gases and multiple area monitoring system for low level continuous
monitoring of CFC, HCFC and HFC refrigerant gases used in most commercial
refrigeration systems. System design supports compliance to the refrigerant monitoring
requirements of ANSI/BSR ASHRAE 15-2007 and ASHRAE Safety Code 34-2007.
Sensitivity
All gases 1 ppm
Measuring Range
All gases 0 to 10,000 ppm
1
Accuracy
Gas Library
Most gasses: ±1 ppm ±10% of reading from 0-1000 ppm
(R11, R22, and R113 ±10 ppm ±15% of reading 0-1000 ppm)
CFC:
HFP, R-11, R-12, R-113, R-114, R-502
HFC:
R125, R-134a, R236FA, R245Fa, R32, R-404a (HP62), R-407a, R-407c
(AC9000), R-407F, R-410a (AZ20), R422a, R422d, R427a, R-507 (AZ50),
R-508b (SUVA95)
HCFC: R-123, R-124, R21, R-22, R227, R-23, R-401a (MP39), R-402a (HP80),
R-402b (HP81), R-408a, R-409a, R-500, R-503
Halon: H1211, H1301, H2402
Other: FA188, FC72, H1234YF, H1234ZE, N1230, N7100, N7200, N7300, N7600,
R424A, R426A, R438A, CUSTOM
AGM-MZ Specifications
Product Type
The AGM-MZ provides multiple area monitoring system for low level continuous
monitoring of Ammonia gases used in most commercial systems.
Sensitivity
20 ppm
Measuring Range
25 to 10,000 ppm
1
Accuracy
Most gasses: ±10 ppm ±10% of reading from 0-10,000 ppm
Gas Library
Ammonia (NH3)/R-717
CO2-MZ Specifications
Product Type
The CO2-MZ provides multiple area monitoring for low level continuous monitoring of
carbon dioxide gases used in most commercial systems. System design supports
compliance to the gas monitoring requirements of ANS/BSR ASHRE 15-1994.
Sensitivity
10 ppm
Measuring Range
300-8,000 ppm
Accuracy
1
Gas Library
1
6
Most gasses: ±5 PPM ±5% of reading from 300-1000 ppm, ±10% of reading from
1001-3000 ppm
Carbon Dioxide (CO2)/R-744
At reference environmental conditions (25°C, 45% RH non-condensing, 1 ATM)
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
General Multi-Zone Specifications
Coverage
4 point standard, expandable to 16 points in 4 point increments
Detector Type
Infrared Non-Dispersive
3 Indicator lights:
• Green
Monitor is powered on. LED glows during normal operation; flashes when
unit is in warm-up mode
• Red
Alarm. LED flashes when any point has exceeded the alarm setting.
• Yellow
Fault. LED flashes when there is a system fault
Front Panel
Size (H x W x D)
12.23" x 13.7" x 4.96" (31.06 cm x 34.80 cm x 12.60 cm)
Weight
15 lbs. (6.8 kg)
Sampling Mode
Automatic or manual (hold)
Re-Zero
Auto or on zone change
Response Time
5 to 315 seconds – depending on air line length and number of zones
System Noise
Less than 40 dB(A) @ 10 feet (3m)
Monitoring Distance
1,200 ft (366 m) maximum for combined length of sample + exhaust tubing (each zone)
Conditioned Signal
Dual optional 4-20 mA DC isolated outputs. Channel 1 = zone area, Channel 2 = PPM
Alarms
Four SPDT alarm contacts rated 2A at 250 VAC (inductive) 5 A at 250 VAC (resistive).
Three are assigned to PPM level alarms, one assigned to system faults.
Communications
Full two-way communications with Remote Display Module or Building Management
System via RS-485 serial interface. RS-232C communications port standard.
Power Safety Mode
Fully automatic system reset. All programmed parameters retained.
Operating Temp
32 to 122 °F (0 to 50 °C)
Ambient Humidity
5% to 90% RH (non-condensing)
AC Power
100 to 240 VAC, 50/60 Hz, 20 W
Certification
UL 61010-1, CAN/CSA 22.2 No. 61010-1 & CE Mark
Warranty
2 years from date of shipment
Altitude Limit
6,562 ft (2,000 m)
Sensor Life
7-10 years
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
SECTION 2. INSTALLATION
2.1. Installation Considerations
2.1.1.
Warnings and Cautions
WARNING: Explosion hazard! Do not mount the MZ monitor in an area that may contain
flammable liquids, vapors, or aerosols. Operation of any electrical equipment in such an
environment constitutes a safety hazard.
WARNING: Shock hazard! Always disconnect AC power before working inside
the monitor.
CAUTION: Drilling holes in the MZ enclosure may damage the unit and will void the
warranty. Please use the knockouts provided for electrical connections.
CAUTION: The MZ monitor contains sensitive electronic components that can be easily
damaged. Do not touch nor disturb any of these components.
2.1.2. Inspection
The MZ monitor has been thoroughly inspected and tested prior to shipment from the factory. Nevertheless,
it is recommended that the monitor be re-checked prior to installation. Inspect the outside of the enclosure
to make sure there are no obvious signs of shipping damage. Open the enclosure and inspect the interior of
the monitor for loose components that may have become dislodged during shipment. If damage is
discovered, please contact the nearest Bacharach Service Center for assistance.
2.1.3. Location of the Monitor
The MZ monitor should be centrally located in the facility and should be easily accessible for visual
monitoring and servicing. Combined length of the intake sample line and the exhaust line cannot exceed
1200 feet (366 m) in length, but it is important to remember that sampling cycle time is proportional to the
total number and length of individual sample lines.
Dirt, grease, and oils can adversely affect the operation of the MZ monitor. The monitor should be installed
out of direct sunlight in a clean, dry area that is not subject to temperature or humidity extremes. Installation
of the monitor in a mechanical room is acceptable provided reasonable environmental conditions exist. If
there is a question, consider installing the unit outside of the mechanical room in a cleaner area of the
facility.
NOTE: The mounting location of the monitor should allow it to be easily accessible for visual
monitoring and servicing.
2.1.4.
Mounting Instructions
NOTE: The MZ monitor should be installed plumb and level and securely fastened to a rigid
mounting surface.
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The enclosure utilizes keyhole mounting brackets designed for ¼ inch fasteners. Locate the four screws as
shown in the diagram below or by using the provided mounting template (P/N 3015-5109). Allow the screw
heads to protrude approximately ¼ inch.
Figure 2-1. MZ Monitor Mounting Specifications
Hold the monitor flat against the mounting surface and allow it to slide down, engaging the screw heads in
the keyhole slots of the mounting brackets. Adjust the screws as necessary to hold the monitor securely
against the mounting surface.
2.2. Connecting Gas Sample Lines
2.2.1. Overview
Individual gas sample lines are run from the MZ monitor to each area of the facility to be monitored.
Additionally, a purge line is installed to provide clean air for resetting the infrared zero baseline. All air,
sample, and purge line connections are located on the left side of the enclosure. Refer to the illustration
below.
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
Figure 2-2. MZ Monitor Side View
2.2.2. Tubing Considerations
Use ¼” (6.35 mm) outside diameter (0.040” or 1.016 mm wall) flex tubing for all air lines (P/N 3015-3235) or
equivalent. The tubing should be clean and free of residual moisture or other contaminants. The tubing
should be cut cleanly with a sharp knife and care should be taken not to distort the tubing end.
To connect the air lines to the monitor simply push the tubing firmly onto the connector. To remove a line,
press the plastic ring on the connector with one hand, then withdraw the tube with your other hand. See
below.
The MultiZone monitor uses pushto-connect (PTC) style connectors.
To insert sample lines, firmly push
the appropriate tubing into the hole
in the center of the connector until it
seats in the connector. Refer to the
figures at the left.
To remove tubing from a PTC
connector, push and hold the
spring-loaded collar inwards, then
simultaneously withdraw the tubing.
Refer to the figures at the right.
Figure 2-3. Using PTC Connectors: Connecting (Left) and Disconnecting (Right)
All tubing bends should have a radius of no less than 5” (12.7 cm) to ensure proper airflow. If kinks or
obstructions occur in any of the air lines the instrument may not function properly.
2.2.3. Connecting Purge Line
A purge line is an intake line that is required to draw fresh air into the instrument and should not exceed
300 feet (91.44 mm) in length. It is advisable to terminate the purge line outdoors, provided the input is
not exposed to rain, snow, ice, exhaust fumes, or other airborne contaminates. If an outdoor installation
is impractical, the line should be run to an area inside the facility that you are certain is not contaminated
with ambient gas. If this is not possible, an optional charcoal filter assembly (P/N 3015-3125) can be used
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Multi-Zone Gas Monitors
with the Halogen Gas Monitor to filter refrigerant from the purge line. It may be mounted adjacent to the
monitor. A line-end filter (P/N 3015-3420) should be attached to the end of the purge line when the
charcoal filter is not used. Note that the charcoal filter option must NOT be used in ammonia or CO2
applications.
IMPORTANT (CO2 Only): Because CO2 is present in ambient air, the purge line MUST
BE run outside, away from any known sources of CO2 gas. An atmospheric CO2
concentration value can be manually entered by the user in the CAL screen. See CO2
Atmospheric Concentration (page 42).
2.2.4. Connecting Exhaust Line
An exhaust line can be used when it is required to vent gas samples away from the instrument and
should not exceed 300 feet (91.44 mm) in length. The exhaust line should terminate in a location that is
completely isolated from the purge line termination point and other areas of the facility that will be
monitored. Ideally this line should terminate outdoors in a location that is not exposed to the elements.
This line does not require a line-end filter. If the exhaust line terminates outside the building, position the
tubing so that no water or moisture can enter it.
2.2.5. Connecting Sample Intake Lines
The MZ monitor is designed to accommodate up to 16 separate sample intake lines. The standard
configuration of the unit includes one manifold of 4 intake connectors and 1 purge connector. Additional
manifolds can be easily installed to increase monitoring capacity (field installation kit P/N 3015-5171, and 4
zone line end filter kit P/N 3015-3411).
Sample intake lines can be up to 1,200 feet (366 m) when no exhaust tubing is used. Otherwise, the
combined length of the sample line and the exhaust line cannot exceed 1,200 ft (366 m). All line
terminations should be positioned to reduce the possibility of mists, aerosols, oil, water, dust, or other
contaminates being drawn into the instrument. A line-end filter (P/N 3015-3420) should be attached to the
end of each sample intake line. General placement guidelines are shown below, but air-flow dynamics
should also be considered (e.g., consider the effects of exhaust fans which tend to draw target gas from the
space).
•
HGM-MZ Halogen
Mount sampling points 6-18 inches above floor
•
AGM-MZ NH3 (Ammonia)
Mount sampling points 1-2 feet below ceiling
•
CO2-MZ CO2 (Carbon Dioxide)
Mount sampling points 4-6 feet above floor (breathing zone)
IMPORTANT: DO NOT block any of the zones. Unused zones may be disabled by setting
their length parameter to zero in the zone setup screen.
Depending on type of use and location of lines, the end-of-line water stop filter assembly can be used to
prohibit moisture from entering the intake lines. Three (3) end-of-line water stop filters are supplied with a
standard unit. Place the end of the intake line into the blue receiver of the end of line water stop and tighten
sufficiently.
NOTE: Only one filter assembly, either the line-end filter or end-of-line water stop, should
be used for each line.
Please refer to the earlier section Suggested Location of Sampling Points (page 4) to learn more about
where to place the ends of the sample intake lines.
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
2.2.6. Installing an Optional Splitter Kit
Splitter kits are made available which allow the MZ unit to take gas sample readings from several sample
points while utilizing just a single zone. These kits are designed for use ONLY in confined/defined spaces
with high potential for leaks, such as food cases, cold rooms, refrigeration rack rooms, etc. Bacharach’s
2-way (P/N 3015-5404) and 3-way (P/N 3015-5405) splitter kits are available as optional accessories. Refer
to instruction 3015-5415 (supplied with the kit) for detailed installation instruction.
2.2.7. Connecting the Water Trap
The water trap is an optional accessory for applications that result in water or condensation frequently
entering the intake lines. This is available in a manual style trap (P/N 0007-1655) which is manually
emptied once it has become filled. Install the water trap close to the unit for the most effective results. The
intake line may be cut where the user finds appropriate (preferably close to monitor). Each side of the
intake line should be inserted into the receivers on either side of the water trap. Secure tightly. A
replacement filter (P/N 0007-1656) for the water trap is available and is replaced by unscrewing the clear
plastic cup of the water trap, pulling the filter directly out (do not unscrew), and inserting the new filter into
place. Replace the cup of the water trap. If desired, an optional mounting bracket (0007-1657) may be
used to secure the water trap in place.
NOTE: The termination filter (P/N 3015-3420) or end-of-line water stop filter (P/N 30155512) should be used, regardless of the presence of a water trap.
IMPORTANT: Extreme or humid temperatures may cause water to condense in the tubes.
A water trap is highly recommended for use in these scenarios.
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2.3. Interior Components
Figure 2-4. MZ Monitor Interior Components
NOTE: The plastic cable ties surrounding the air pump are to ensure safe handling during
shipping. Please remove before operation. Reinstall a plastic cable around the air pump if
the unit is shipped to Bacharach, Inc. for service or repair. This prevents damage during
shipping.
2.4.
Electrical Wiring
The MZ monitor uses a universal power supply that is capable of accepting inputs of 100 to 240 VAC,
50/60 Hz. The monitor’s power consumption is 20 Watts. It is highly recommended that the monitor be
connected directly to the AC power source, preferably on its own circuit. The AC power connection should
be completed with UL listed 3-conductor wire (minimum 16 AWG), rated 300 VAC at 105°C.
Locate a convenient service knockout and install electrical conduit in the typical manner.
Locate the AC input terminals and ground stud on the inside of the monitor. Secure the incoming AC power
neutral (white/blue) and live (black/brown) wires to the LINE 1 and LINE 2 terminals.
Using the supplied crimp-on ring terminals, washers, and nuts, connect the incoming AC power ground wire
(green) to the monitor’s AC input ground stud, and then install a separate wire between the ground stud and
the GND terminal.
WARNING: Electrical installation should be performed by a certified electrician, and must
comply with all applicable NEC/CEC and local electrical safety codes.
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
WARNING: Copper conductors for connection to supply mains must be made in
accordance with NEC/CEC and local codes.
WARNING: The AC power ground wire must first be connected to the monitor’s ground
stud. Under no circumstances should this monitor be operated without a protective ground.
Doing so poses a potential shock hazard, and is also a violation of electrical safety
standards applicable to this type of equipment.
IMPORTANT: Drilling holes in the MZ enclosure may damage the unit and will void the
warranty. Please use the knockouts provided for electrical connections.
A switch or circuit breaker rated 1.0 A, 250 VAC must be attached to the monitor’s AC power leads. This
switch must also be located in close proximity to the monitor, and be in easy reach of the operator. This
switch should also be clearly marked as the monitor’s main AC disconnect device. The circuit breaker or
switch must disconnect all current-carrying conductors (i.e., live and neutral).
Figure 2-5. Multi-Zone AC Input Power and Ground Connections
2.5. Connecting Communications Devices
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2.5.1. Remote Display Module (RD) Connection
The MZ is connected to the optional RD using a shielded twisted pair instrument cable. The maximum
distance between the farthest MZ and RD is 4500 feet.
Use any of the remaining service knockouts to gain access to the interior of the monitor. The RS-485
communications wiring between the MZ and RD must be connected in the following manner:
1. Locate the RS-485 connector in the MZ (see Figure 2-3 on page 13).
2. Connect one lead of a twisted shielded pair to the “B” connection point. Note the wire color.
3. Connect the second wire to the “A” connection point. Note the wire color.
4. Connect the ground to the “GND” connection point.
5. Locate the RS-485 connector marked “TO MONITORS” in the RD (see this topic in the RD manual).
This connector is located on the bottom of the RD PC board, second from the right.
6. Run the wire to the RD and connect the twisted shielded pair to the RS-485 “TO MONITORS”
connector using the same color code as used on the MZ.
2.5.2. Integrating with Building Management Systems
The MZ may be connected directly to a Building Management System using a shielded twisted pair cable.
The cable from the Building Management System is connected to the RS-485 connector inside the MZ
monitor. MODBUS RTU is the standard communications protocol.
Use any of the remaining service knockouts to gain access to the interior of the monitor. Locate the RS-485
connector and remove it from the circuit board. Secure the wire leads to the connector orienting them as
shown in the diagram below. Check to make sure that the polarity matches the wiring to the Building
Management System. When you are through securing the connections, carefully plug the connector back
onto the circuit board.
2.5.3. Larger Integrated Systems
You may also connect the MZ monitor to a Building Management System through a Remote Display. In this
case, first connect the MZ to the RD as described above. Then, follow the instructions in the
Communications Connections section of the RD manual for information on how to connect the RD to a
Building Management System.
Figure 2-6. RS-485 Connector
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
2.5.4. Changing Terminator Switch Settings
The terminator switch is shipped from the factory in the “OUT” position (no termination). This is the correct
setting if the MZ is to be installed in the middle of a network. If the MZ monitor is connected as a single
device or if it is the last device on the network chain, the terminator must be moved to the “IN” position.
Locate switch #4 and determine its position. If it must be moved, slide the switch to the appropriate position.
(Note that switches 1-3 are for service use.)
Figure 2-7. Termination Switches
2.5.5. Personal Computer
The MZ may be connected to a personal computer using the RS-232 interface on the left side of
the enclosure. Software will be provided upon request or as a download from the Bacharach website at
http://www.MyBacharach.com/downloads.htm.
NOTE: Refer to the “PC Software” section (section 2.8 on page 18) for details.
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2.6. Terminating Multiple Monitors
Figure 2-8. Termination Settings for a Network of Multiple Monitors and a Remote Display
NOTE: For multiple MZs with Remote Display, the last MZ or RD on either end of the
network must have its terminator in the “IN” position, and all other units must have their
terminators in the “OUT” position.
NOTE: For multiple MZs with Remote Display, the total length of the RS-485 cable cannot
exceed 4500 feet (1372 m). (Use instrument cable 20 gauge multi-strand shielded and
twisted pair – similar or equal to Belden cable #8762.)
2.7. Connecting to a Building Management System
The MZ monitor may be connected to a Building Management System via the RS-485 connector. The node
address on each MZ monitor may be set from 1 to 15 in order to identify itself to the Building Management
System.
NOTE: Building Management Systems set to a 0 or 1 address both respond to messages
from the RD as address 1, therefore you should not have a unit set to 0 and another set to
1 on the same network.
If the MZ network is connected directly to a Building Management System it may not be connected to the
RD. However, the RD has two communications ports, an “upstream” port (labeled BMS) and a
“downstream” port (labeled TO MONITORS). A BMS node may be connected to the upstream RD port while
the downstream RD port talks to the MZ monitors. In this case, the BMS is talking “through” the RD to the
MZ monitors, but not physically on the MZ/RD network.
P/N: 3015-5074 Rev 13
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Multi-Zone Gas Monitors
NOTE: User must have two (2) dedicated ports to successfully complete the required
setup.
Figure 2-9. Termination Settings for Multiple Monitors Connected to a BMS (Two Trunks)
Figure 2-10. Termination Settings for Multiple Monitors Connected to a BMS (Daisy Chain)
2.8. PC Software
2.8.1.
Operation
NOTE: The MZ is compatible with HGM300 PC software version 1.52 and higher.
However, calibration data can only be edited on the front panel of the MZ, not through the
PC software or RDM units.
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NOTE: The PC software is not compatible with 64-bit (or newer) computers.
NOTE: The PC software uses COM1 by default. Therefore, the interface cable should be
connected to the port configured as COM1 on the PC. Also, no other software drivers or
devices in the computer may control COM1 when the MZ software is in use. Alternatively,
COM2 (for example) may be used by adding a space and the number 2 to the command
line as follows:
C:\pc2HGM.exe 2
When using a USB to serial converter, be sure it has been mapped to COM1 or COM2.
The connection is made through a standard “straight through” serial port connection. A
three-wire connection is used (RXD, TXD, and GND). No hardware flow control is used.
The MZ software automatically configures COM1 to match the MZ RS-232
communications parameters.
NOTE: Occasionally, the laptop connection will not connect properly and only two beeps
are heard and the program times out. To resolve this, disconnect the RS-232 cable and
cycle power on the MZ and the laptop. After both are operational, connect the RS-232
cable and start the software program.
1. Apply power to MZ monitor and allow it to warm up. Note that on CO2 models, a “Clearing Purge
Line” message is displayed for approximately 2.5 minutes before warm up begins.
2. Connect RS-232 interface cable to the PC and RS-232 port on the MZ monitor.
3. Insert software disk into the PC.
4. Open the MZ software using Windows Explorer.
5. Upon start up, the program will immediately attempt to download data from the MZ, as indicated by
several beeps.
Navigate using your PC keyboard:
•
Use the up, down, left, and right arrow keys to navigate through the screen options.
•
Use the Enter key to select options.
•
Use the Esc key to go back one step.
6. Go to EDIT. From the EDIT Menu, select SYSTEM. The monitors’ LOCATION becomes
highlighted. Press Enter to move to the TAG area. Use the Backspace key to remove the existing
tag. Enter a new tag. Press Enter to return to LOCATION. Select the next item to be addressed.
Note that you cannot change the “SN” or “FIRMWARE” items. Press the Esc key to return to the
menu bar.
7. Go to EDIT. From the EDIT Menu, select ZONES. Select a specific zone to identify and set
parameters. When REFRIGERANT is selected (Halogen Monitor), scroll through the gas library to
locate and select the gas type for that zone.
8. Setting the Alarms: Select EVAC LEVEL. Use the Backspace key to clear previous setting. Type in
the new PPM level. Use the same method to set the spill level and leak level.
9. To close or bypass a zone: Set the DISTANCE to 0 feet.
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Multi-Zone Gas Monitors
IMPORTANT: When a modified parameter (zone, system, or calibration) is sent to the MZ
monitor, please wait for the computer software to indicate that the download is complete
before continuing with any further edits.
2.8.2.
•
•
2.8.3.
Saving and Sending Programs
When saving to your computer, the program will automatically add “.cfg” to the filename you have
entered.
To send a saved program to the MZ, open the program and connect the PC to the MZ. From the
monitor, select SEND SETUP and press Enter. The saved program will be sent to the MZ.
Trend Data
NOTE: Creating a trend data file must be done while connected to the MZ.
From the computer, select GET TREND DATA. Select the zone that you want to trend and press Enter. The
trend data will appear in a list format. Press Enter again to access the file name screen. Type the file name
in for that particular zone. Press Enter. The file will be saved as a text file that can be converted to an Excel
file or printed as is.
NOTE: The TREND file must be saved zone by zone, with a filename per zone.
2.8.4. Converting the TREND Text File to a Microsoft Excel File
Open Excel and the desired file. Select “Delimited” format and “Space” as the delimiter. Select “General”
as the column data format. The text file will display as an Excel file. When saving, change the file name
extension to “.xls”. Comments or notes may be added to this file as needed and saved.
2.8.5. Saving and Printing Screens and Logs
Open the software while connected to the MZ. After the software receives the program, open the desired
screen (e.g., software screen, alarm log, fault log, diagnostic screen, etc.). Use the Alt and Print Screen
key combination on the PC keyboard to capture the image and paste it into a Word document. Save and
print. This is the last thing that needs to eb done.
2.8.6. USB Type Laptops
Some laptops have USB ports and no RS-232 9-pin ports. A USB-to-serial converter or PCMCIA-to-serial
converter will be required if a PCMCIA slot is available You will be required to purchase a PCMCIA card
that provides an RS-232 output. This is necessary for Windows Vista and higher versions. We
recommend the PCMCIA card manufactured by:
SEALEVEL SYSTEMS, INC.
155 TECHNOLOGY PLACE
P. O. BOX 830
LIBERTY, SC 29657
PHONE – 864-843-4343
www.sealevel.com
Reference part numbers 2105R USB-to-RS232 or PC-SIO-232 PCMCIA card. A “straight through” RS232 cable and a DB25-to-DB9 adapter will be required to connect the laptop to the HGM-MZ.
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2.9. Optional Current Loop Interfaces
NOTE: The two-output, current loop interface is an option that MUST be ordered
separately.
2.9.1. Optional 4–20 mA DC Outputs
Upon installation of the optional 4–20 mA DC Interface Board (P/N 3015-5152), the MZ has the capability of
providing dual 4-20 mA DC scrolling current loop outputs for connection to external monitoring devices (e.g.,
a local loop-powered display or a building management system [BMS]).
IMPORTANT: Loop outputs are powered internally. Do not use an external power supply
as this can damage the loop card.
NOTE: Optional remote loop-powered displays are available to view the 4-20 mA outputs.
The interfaces are set up as follows:
•
•
Loop 1 indicates zone area
Loop 2 indicates PPM.
The 4-20 mA outputs are scaled to correspond to individual zone numbers and PPM concentrations.
Scaling for the 16 (maximum) zone numbers is fixed (see table below). The default scaling for the PPM
concentrations provides a 0-1000 PPM range for the 4-20 mA output, although it can be adjusted through
the LOOP2 FACTOR option in the SYSTEM SETUP screen. Refer to the tables below.
Loop 1 = Zone
Loop 2 = PPM (Default: 0.016 mA DC = 1 PPM)
Output
Zone
Output
PPM (Default)
4 mA DC
5 mA DC
6 mA DC
7 mA DC
8 mA DC
9 mA DC
10 mA DC
11 mA DC
12 mA DC
13 mA DC
14 mA DC
15 mA DC
16 mA DC
17 mA DC
18 mA DC
19 mA DC
20 mA DC
n/a
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
4 mA DC
5 mA DC
6 mA DC
7 mA DC
8 mA DC
9 mA DC
10 mA DC
11 mA DC
12 mA DC
13 mA DC
14 mA DC
15 mA DC
16 mA DC
17 mA DC
18 mA DC
19 mA DC
20 mA DC
0 PPM
63 PPM
125 PPM
188 PPM
250 PPM
313 PPM
375 PPM
438 PPM
500 PPM
563 PPM
625 PPM
688 PPM
750 PPM
813 PPM
875 PPM
937 PPM
1000 PPM
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Multi-Zone Gas Monitors
2.9.2. 4-20 mA DC Connections
External devices are connected to the MZ monitor using a shielded dual twisted pair cable. Use any of the
remaining service knockouts to gain access to the interior of the monitor. Locate the dual 4–20 mA DC
output connector (see below) and remove it from the circuit board. Secure the wire leads to the connector
orienting them as shown in the diagram below. Check to make sure the polarity matches the wiring at the
external device. When you are through securing the connections, carefully plug the connector back onto the
circuit board.
NOTE: The ground connections of the 4-20 mA DC output connector are common.
NOTE: The 4-20 mA DC output connector are SIGNAL OUT ONLY. DO NOT APPLY
POWER.
NOTE: It is highly recommended that a current loop isolator is used when connecting to
the 4-20 outputs. Bacharach recommends the “Dataforth DSCL 21 Loop powered isolator
DIN mount.” More detailed information can be found at www.dataforth.com.
NOTE: When one or both current loop outputs are not used, install a jumper wire between
the ground and the unused loop terminal(s) to prevent the system from generating a
current loop fault.
Figure 2-11. Optional Dual 4-20 mA DC Output Board for the MultiZone
CAUTION: The loop outputs have isolated grounds. Therefore the cable shield should be
terminated at the receiver and not the MZ monitor. The signal for both current loops must
be returned to the MZ monitor.
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Figure 2-12. Optional Dual 4-20 mA DC Output Board and Connector
2.10. Connecting External Alarms
2.10.1. Overview
The MZ monitor includes four SPDT relays whose contacts are rated 2 A at 250 VAC (inductive) and 5 A at
250 VAC (resistive). These relays are used for the connection of external alarm devices that are activated
when the relay is energized. The relays are factory assigned to energize under the following conditions:
Relay #1
Relay #2
Relay #3
Relay #4
Leak
Spill
Evacuate
Fault
Alarm Point 100 ppm
Alarm Point 300 ppm
Alarm Point 500 ppm
System Fault Event
2.10.2. Connection
Use the conduit or any of the remaining service knockouts to gain cable access to the interior of the monitor.
Locate the relay connector (see Figure 2-3 on page 13) and remove it from the circuit board. Secure the
leads to the connector orienting them as shown in the diagram below. When you are through securing the
connections, carefully plug the connector back onto the circuit board.
Figure 2-13. MZ Monitor Relay Connector
Each relay may be connected as normally open (NO), or normally closed (NC). The relay contacts are
rated 2 A at 250 VAC (inductive) and 5 A at 250 VAC (resistive).
Power for the alarm devices connected to the relay contacts may be supplied by an external 24 VDC
power source or the monitor’s AC input terminals. In the first wiring diagram, power to this device is being
tapped off the monitor’s AC input. In the second wiring diagram, power is supplied from an external
power source.
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Jumper the “Live/Positive” line of an external power source (DC devices) or the monitor’s AC input (AC
devices) to the “Common” terminal on the relay connector.
Connect the “Live/Positive” end of the strobe or horn to the “NO” terminal of whichever level of alarm is
appropriate for the application.
For protection, install an in-line fuse of the appropriate size and design for the external alarm device being
used.
The other end of the strobe or horn is connected to the “Neutral/Negative” leg of the external power
source (DC devices) or monitor’s AC input (AC devices).
Figure 2-14. Typical AC External Alarm Relay 1 Wiring
Figure 2-15. Typical DC External Alarm Relay 1 Wiring
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SECTION 3. SETUP PROGRAMMING
3.1. Initial Power Up
When the MZ monitor is powered up, all front panel LEDs will illuminate and a splash screen will appear,
displaying the monitor’s firmware version level. Note that on CO2 models, a “Clearing Purge Line”
message is displayed for approximately 2.5 minutes before warm up begins. After a moment, the Warm
Up screen will be displayed and the green MONITOR ON light will blink.
After a 15-minute warm up cycle, the MONITOR ON light will glow steadily and the Data Display screen
will be displayed. (See Appendix C for an overview map of the screens in the system.)
3.2. Data Display Screen
Figure 3-1. Data Display Screen and Front Panel Keypad
3.3. Navigating to the 1st Setup Screen
From the Data Display Screen, press the UP or DOWN arrow key. SETUP will be highlighted in the first
box. Press ENTER to select this option and display the Setup screen (see below).
Figure 3-2. System Setup Screen #1
3.4. Navigating to the 2nd Setup Screen
From System Setup Screen #1, select the SYSTEM option to go to System Setup Screen #2. Select the
ESC key to return to the System Setup Screen #1.
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Figure 3-3. HGM System Setup Screen #2
3.4.1. Location
This is the name you assign to the MZ monitor to identify its location. It may have up to 12 alphanumeric
characters.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.2.
Number of Zones Installed
IMPORTANT: Do not change the number of zones to deactivate unused zones. Changing
the number of installed zones is only necessary when manifold blocks are added or
removed. Go to the individual zone that you wish to disable and set its distance to zero.
1. Press the ENTER key to adjust the number.
2. Use the UP/DOWN cursor keys to modify the number (must be 4, 8, 12, or 16).
3. Press ENTER to accept the new number or ESC to revert to the previous setting.
3.4.3. Alarm Acknowledge Mode
This function programs the relays in the unit for latching or non-latching operation.
1. Press the ENTER key to adjust the setting.
Use the UP/DOWN cursor keys to toggle between settings.
AUTO
Non-latching (Alarm relay will automatically de-energize when the gas level drops
below its alarm point.)
MANUAL
Latching (Alarm relay remains energized, and will not release until the alarm
condition has been manually acknowledged. Refer to Acknowledging Alarms on
Page 35.)
2. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.4. Audible Alarm
This parameter selects the function of the MZ monitors internal audible alarm device.
1. Press the ENTER key to adjust the setting.
2. Use the UP/DOWN cursor keys to select unused, monitor on, evacuate, spill, leak, fault, or alarm.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: In “Monitor On” mode, the unit will only give audible alarms on a critical fault that
stops the unit from monitoring.
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3.4.5. Zone Hold
Sets the length of time a zone will be monitored when the zone hold feature is activated. The default is 15
minutes. The range is 1 to 999 minutes.
1. Press the ENTER key to adjust this setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.6. Detection Limit
This is essentially a squelch setting that instructs the instrument to interpret PPM readings below the
designated level as 0. The range is 1 to 99 PPM.
1. Press the ENTER key to adjust the setting.
2. Use the UP/DOWN cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.4.7. Loop Mode
This sets the loop mode of the two optional 4-20 mA outputs. Options are:
•
•
track zones mode (default)
highest PPM concentration mode.
NOTE: Both LOOP MODE (for selecting track zones or highest PPM mode) as well as the
LOOP2 FACTOR (for scaling the PPM output) are configured from the SETUP menu.
Configure one, then press ENTER to access the other.
In track zones mode the MZ adjusts the ZONE and PPM outputs to correspond to the latest sampled
zone number and its corresponding PPM concentration, respectively. For example, if the MZ samples
zone #9 at 63 PPM, the ZONE and PPM outputs would read 13 mA (corresponds to zone #9) and 5 mA
(corresponds to 63 PPM), respectively, until the next zone is sampled. This continues in a cyclic fashion
through each zone. Note that this example assumes LOOP2 Factor was left at its default value (0.016).
This can be adjusted through the LOOP2 FACTOR option in the SYSTEM SETUP screen.
In highest concentration (PPM) mode the MZ adjusts the two current outputs to correspond to the zone
number that has the highest PPM concentration and the corresponding value of that concentration,
respectively. Unlike track zones mode, this mode will adjust the two outputs to correspond to whichever
zone has the highest PPM concentration. For example, if zone #9 is sampled at 125 PPM, the two
4-20 mA outputs will read 13 mA and 6 mA, respectively, as long as it continues to sample at 125 PPM or
until a different zone samples a concentration greater than 125 PPM.
3.4.8. Loop2 Factor
This sets the PPM scale factor for current loop number 2. After setting the loop mode, the menu box
changes to a lower-level menu that allows you to set the Loop2 Factor. To calculate the current output,
multiply the scale factor by the PPM and add 4. For example, at the default scale factor of 0.016, a
measurement of 100 ppm would generate a current output of 5.6 mA DC. The current output cannot exceed
the 20 mA DC capacity of the interface.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: Both LOOP MODE (for selecting track zones or highest PPM mode) as well as the
LOOP2 FACTOR (for scaling the PPM output) are configured from the SETUP menu.
Configure one, then press ENTER to access the other.
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3.4.9. Re-Zero Mode
This parameter defines the frequency at which the instrument re-zeros the optical sensor.
1. Press the ENTER key to adjust the setting.
2. Use the UP/DOWN cursor keys to toggle between settings.
AUTO
Sets the instrument to re-zero every 10 minutes.
ZONE CHANGE Sets the instrument to re-zero at each zone change. This is the most accurate
setting, but increases the time interval between measurement cycles.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.5. Navigating to the 3rd Setup Screen
3.5.1. Overview
From System Setup Screen #2, select the MORE option to go to System Setup Screen #3. Select the
BACK option to return to System Setup Screen #2.
Figure 3-4. System Setup Screen #3
NOTE: The RS485 BAUD rate text is replaced by “Service Timeout” when in Service
Mode.
3.5.2. Baud Rate
This parameter defines the baud rate for the RS-485 communications port.
1. Press the ENTER key to adjust the setting.
2. Use the cursor keys to scroll through a list of available baud rates to select the desired baud rate.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.5.3. Node Address
Each monitor on the network must has a distinct node address. The node address may be set from 1 to 64.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.5.4. Password
This field is used to define a system password. The default setting is 000, which provides no password
protection.
1. Press the ENTER key to adjust the password.
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2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual alphanumeric characters.
3. Press ENTER to accept the new password or ESC to revert to the previous setting.
st
NOTE: After entering the password (including the 1 time it is set), the MZ begins a 30minute “inactivity” timer that is reset every time a key is pressed. When the timer reaches
zero, password access is enabled. To enable password protection sooner, cycle power on
the MultiZone. When password protected, a password entry is required in order to view
screens other than the SYSTEM or ZONE VIEW screen.
3.6. Additional Service Features
The Service Mode option is located on the System Setup Screen in the bottom right corner. When
activated, the Service Mode will disable the MZ unit for a specified length of time. The default is 5 minutes.
This time interval can be changed as described in the Service Timeout section below.
IMPORTANT: Note that while in the Service Mode no measurements are made, nor are
any alarms activated.
Access the service mode options from the initial Data Display Screen. Press the SERVICE MODE ENTRY
option twice within 3 seconds. To exit the Service Mode, again press the SERVICE MODE ENTRY option
twice within 3 seconds.
Several features can be viewed on the System Setup Screen #3 when the monitor is placed in service
mode. While in service mode, the user can identify the model number, set digipot values and sensor
temperature, and acquire the temperature coefficient.
Figure 3-5. System Setup Screen #3 (Service Mode)
3.6.1. Service Timeout
Displayed in Service Mode. Sets the length of time the Service Mode is in effect. Stops the monitor for up to
300 minutes (5 hrs) to allow for servicing the unit.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.6.2. DET Digipot
The DIGIPOT function allows manual and a more precise adjustment of the digital potentiometer, which
controls the voltage of the IR Detector. The DIGIPOT is auto tuned at every power up.
1. Press the ENTER key to adjust the setting. Once the option is selected the screen will also display
the voltage.
2. Use the UP/DOWN cursor key to modify the digipot value.
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3.6.3. Node Address
Each monitor on the network must has a distinct node address. The node address may be set from 1 to 64.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual numbers.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
3.6.4. Sensor Temperature Coefficient (For Factory Use Only)
This field is typically for factory use only. A customer may need to enter a temperature coefficient if the IR
bench is replaced and a new temperature coefficient is supplied with the replacement bench. Note,
however, changing this setting will void the calibration.
3.6.5. Password
This field is used to define a system password. The default setting is 000 (no password protection).
1. Press the ENTER key to adjust the password.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual alphanumeric characters.
3. Press ENTER to accept the new password or ESC to revert to the previous setting.
3.6.6. Acquiring Temperature Coefficient (For Factory Use Only)
This field is for factory use only. Changing this setting will void the calibration.
3.6.7. IR Digipot
This option indicates the electrical parameters of the infrared emitter.
3.7. Establishing the CO2 Sensor Baseline
At power up, an automatic zeroing sequence establishes the CO2 sensor baseline. At that time, the MZ
assumes the default ambient CO2 level of 386 ppm. However, if:
•
•
the purge line wasn’t connected to the instrument, or
the purge line was not terminated in fresh air,
then the sensor baseline may be compromised. If you suspect that the baseline was compromised, then
you can re-establish the proper CO2 sensor baseline by ensuring the purge line is properly installed and
following the procedure below.
1. Restart the monitor by either (a) cycling the power, or (b) pressing the CPU reset switch on the
main printed circuit board (see Figure 3-6).
CPU Reset
Switch
Figure 3-6. Location of CPU Reset Button
WARNING: If using the CPU reset switch to restart the instrument, extreme care
should be exercised when accessing the interior of the monitor. This includes
touching a non-painted area of the MZ chassis to provide proper grounding prior to
touching the CPU reset switch or any other internal components. Failure to touch a
grounding area can allow static electricity on your clothing or body to damage the
monitor. Such damage is not covered under warranty.
2. After the restart and the warm-up have completed, the instrument is ready for use.
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SECTION 4. GENERAL OPERATION
4.1. Functional Overview
Normally each MZ monitor will sequentially perform measurements on its active zones without user input.
The total time it takes a MZ monitor to complete a measurement cycle is directly proportional to the number
of active zones and the physical length of the air lines. Monitors linked together on a network operate
independently of each other and consequently complete their respective measurement cycles at different
rates.
The Remote Display operates by polling the network approximately once every 12 seconds to determine the
current status of the MZ monitors. If more than one MZ is connected to the network, it will sequentially poll
each monitor for its status. As a practical matter this simply means that the more complicated the network,
the longer it will take the RD to update the status information for all zones.
4.2. The Zone Setup Screen
From System Setup Screen #2, scroll down to select the ZONES option.
Figure 4-1. Zone Setup Screen #1
4.2.1. Location
This is the name you assign to the MZ monitor to identify the zone location. It may have up to 12
alphanumeric characters.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
4.2.2. Gas/Refrigerant Type
This parameter defines the kind of gas the MZ is detecting.
1. Press the ENTER key to adjust the setting;
2. Use the LEFT/RIGHT cursor keys to select the type of gas you want the device to detect. (Options
differ depending on model).
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
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4.2.3. Distance + EXH
This parameter defines the combined length of the sample tubing plus any tubing on the exhaust port. Total
length should not exceed 1200 ft.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys to
modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
4.2.4. Temp @ Zone
This parameter is used to set the expected temperature of the air at the zone being sampled. The value is
used to calculate the STP PPM value shown in the diagnostic screen only.
1. Press the ENTER key to adjust the setting.
2. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys to
modify the individual characters.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
4.2.5. Current Detection Reading
This reading displays the current PPM level of the selected gas.
4.2.6. Log Interval
The MZ retains a data log of 100 measurements for each zone. The log interval is the number of minutes
from 1 to 1440 between each log point. This parameter can be changed from Zone Setup Screen #1.
The default setting for this parameter is 10 minutes. If the log interval time is set to 0, then a measurement is
recorded in the trend log after every measurement cycle. Therefore, after the trend log is filled, it will contain
the last 100 measurement points for a zone. If you want the data logged less frequently, increase this
value. It is important to remember that cycle time is dependent on many factors, including the number of
zones monitored, input line length, and the run zeroing mode selected. Before changing this value it may be
useful to first review the log data using the Trend Screen to determine the nominal cycle time.
4.3. Navigating to the 2nd Zone Setup Screen
Select the MORE option at the bottom right side of the first Zone Setup screen to continue to the next
screen containing more options. This screen displays the peak PPM value in the upper left side of the
screen.
Figure 4-2. Navigating from the First to the Second Zone Screen
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4.3.1. Leak Level
This is the concentration level in PPM that will activate a leak alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the UP/DOWN cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: The leak level value must be less than the spill level.
4.3.2. Spill Level
This is the concentration level in PPM that will activate a spill alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the UP/DOWN cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: The spill level value must be less than the evacuation level and greater than the
leak level.
4.3.3. Evacuation Level
This is the concentration level in PPM that will activate an evacuate alarm condition.
1. Press the ENTER key to adjust the value.
2. Use the UP/DOWN cursor keys to modify the setting.
3. Press ENTER to accept the new entry or ESC to revert to the previous setting.
NOTE: The evacuation level value must be greater than the spill level.
4.3.4. Re-Setting the Peak PPM Value
Pressing this key resets the current peak PPM level stored in memory and displays it at the top of the
screen.
4.4. Alarms
4.4.1. Functional Overview
If the PPM level for any zone exceeds its designated spill, leak, or evacuate thresholds, an alarm condition
will be created. Once the MZ monitor completes a measurement cycle in the affected zone the alarm
condition will be indicated. At that time the red ALARM LED on the MZ monitor will glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled.
The next time the RD polls the affected monitor its red ALARM LED will glow. Additionally, an external
alarm device may activate and an audible alarm may sound if those features have been enabled.
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4.4.2. Responding to Alarms
An operator can respond to the alarms by accessing the Alarm Summary Screen. Navigate to this screen
by selecting ALARM on the first (Data Display) screen.
Figure 4-3. Alarm Summary Screen
The Alarm Summary Screen displays a list of all alarm conditions pending across the network. The screen
is divided into 8 boxes, and each box represents a single alarm. If more than 8 alarms are pending, the
MORE option will be displayed at the bottom of the screen to permit access to that additional information.
Each box displays the zone number, zone name, and the current PPM reading. A flashing box indicates an
alarm that has not been acknowledged. A static box represents an alarm that has been acknowledged, but
has not yet been cleared from the system.
4.4.3. Alarm Detail Screen
To further investigate an alarm, press the ENTER key to go to the Alarm Detail Screen.
Figure 4-4. Alarm Detail Screen
The Alarm Detail Screen displays more comprehensive information about the nature of the alarm including:
34
•
Complete location information
•
Gas type and current concentration (CONC NOW)
•
Peak concentration and peak time
•
Type of alarm, alarm time, and date.
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This screen provides the following navigation options at the bottom of the display:
ACK
Using the left arrow key, acknowledges the alarm as described in the next section
SETUP Using the right arrow key, navigate to the Zone Setup Screen #1. This enables review of
the zone setup parameters and access to the Trend Screen.
Use the ESC button on the front case to go back to the previous menu.
4.4.4. Acknowledging Alarms
Each pending alarm may require, depending upon selected alarm mode, acknowledgment before the
system returns to normal operation (refer to Alarm Ack Mode on page 26). To acknowledge an alarm,
navigate to the Alarm Detail Screen and select the ACK option as previously described. You will then be
returned to the Alarm Summary Screen and the box associated with that alarm will no longer be blinking,
indicating that the alarm has been acknowledged. Repeat this procedure to acknowledge any remaining
alarms.
Figure 4-5. Alarm Summary Screen (Acknowledge Mode)
Once all the alarms associated with a given MZ monitor are acknowledged, its RED LED will turn off and
any external alarms connected to the MZ relays will de-activate. All pending alarms across the entire
network must be acknowledged before the Remote Display returns to normal operation. Once that occurs,
its RED LED will turn off and any associated external alarms connected to the RD relays will de-activate.
Keep in mind that the system will continue to generate new alarms if PPM values above the alarm
thresholds are detected.
4.4.5. Silencing an Alarm
When alarms are active, the ESC key functions as a silence key. During an active alarm and with the
main screen displayed, press the ESC key. This will generate a prompt to “PRESS ENTER TO CONFIRM
SILENCE”. When ENTER is pressed, the LEAK relay will open and the internal audible alarm (if enabled)
will turn off. In this way, when the LEAK relay is used to operate strobes and horns, they can be quickly
silenced without effecting the SPILL or EVAC, which may be controlling fans or ventilation equipment.
This “silence” mode will be indicated by a reverse flashing “S” in the alarm window. “Silence mode” will be
automatically canceled if the alarm condition of any zone changes by clearing or elevating to a higher
level.
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4.4.6. Clearing the Alarm Event Log
A data log of the last 20 alarm events is retained in memory.
•
From the Data Display Screen, press the UP or DOWN arrow key. SETUP will be highlighted in
the first box.
•
Press the DOWN arrow key until Alarm Event Log is highlighted, then press ENTER to select this
option and display the Alarm Event Log (see below).
Figure 4-6. Accessing the Alarm Event Log
This screen lists zones in the left column and displays which alarms were associated with each zone as
represented by the vertical cursor bar. As you move the bar horizontally using the LEFT/RIGHT cursor keys,
the date and time the alarm condition was detected is displayed in the upper right hand corner of the display
window.
NOTE: The Alarm Event Log can be reset by pressing a combination of the ENTER and
RIGHT arrow buttons while viewing the log.
4.5. System Faults
4.5.1. Functional Overview
If a system malfunction occurs, the yellow FAULT LED will glow. Additionally, an external alarm device may
activate and an audible alarm may sound if those features have been enabled (see Connecting External
Alarms on page 23 and Audible Alarm on page 26).
The next time the Remote Display polls the affected monitor its yellow FAULT LED will also glow.
Additionally, an external alarm device may activate and an audible alarm may sound if those features have
been enabled (see Connecting External Alarms on page 23 and Audible Alarm on page 26).
Depending on the nature of the fault, the MZ monitor may or may not continue to operate normally. Under a
non-critical fault condition, the MZ will continue to measure and log data, but some peripheral functions may
be compromised. Under a critical fault condition, action is required for the MZ monitor to operate normally.
The table on the following page lists the various fault conditions and explains what action should be taken to
correct the problem. Note that the fault codes are cumulative. For example, a code <4200> is both a
<4000> “REZERO VOLT TOL” and <0200> “GAIN SET FAULT” combined, indicating two simultaneous
faults.
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4.5.2. Navigating to the Fault Screen
Displayed on the initial Data Display Screen is a Fault option. Scroll down with the cursor key and select
this option, which will introduce you to the Fault Screen.
Figure 4-7. Fault Screen
4.5.3.
Critical Faults
Fault
NO FLOW ON ZONE
Code
Description / Possible Causes
<0800>
Go to the Data Display Screen and press the FAULT key. This will display
a “NO FLOW” message in each individual zone affected. Check for a
blockage in the air sample line or at the line end filter. Once the blockage
has been cleared, the MZ monitor will return to normal operation after the
zone has been sampled.
NOTE: This can take some several minutes since it is
dependent upon how many zones there are and their
lengths. The MZ will clear the fault the next time it
polls the effected zone and the RD will return to
normal operation the next time that it polls the MZ.
NO FLOW ON PURGE
<1000>
Check the purge line for a blockage. Verify that the length of the purge line
and exhaust line do not exceed 500 feet in length.
CLIPPING FAULT
<8000>
The detector voltage may be out of tolerance. For information on
troubleshooting this type of fault, refer to section 5.3 on page 50.
REZERO VOLT TOL
<4000>
The detector output voltage is out of tolerance. For information on
troubleshooting this type of fault, refer to section 5.3 on page 50.
OVER RANGE
DETECTED
<2000>
This indicates that the measured concentration on one or more zones have
exceeded the measurement range. For information on troubleshooting this
type of fault, refer to section 5.3 on page 50.
ZERO FILTER FAULT
<0100>
Indicates contamination in the purge air, or if a charcoal filter is in use, the
filter may need to be changed.
GAIN SET FAULT
<0200>
Indicates sensor gain (digipot) is outside acceptable range. For
information on troubleshooting this type of fault, refer to section 5.3 on
page 50.
A2D FAULT
<0400>
Analog to digital converter not working.
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4.5.4.
Non Critical Faults
Fault
Code
Description / Possible Causes
BOX TEMP FAULT
<0001>
Enclosure’s internal temperature is outside normal range (or IR sensor has
failed). Check the installation to verify that the monitor is not being
subjected to extreme temperatures. Verify that the ventilation holes are not
obstructed. Refer to the Diagnostic Screen for the ZERO temperature,
BNCH temperature and BOX temperature. Call the factory with this
information for further instructions.
BENCH TEMP FAULT
<0002>
Optical bench is outside of normal operating range (or sensor has failed).
Check the installation to verify that the monitor is not being subjected to
extreme temperatures. Check the Diagnostic Screen for the ZERO
temperature, BNCH temperature and BOX temperature. Call the factory
with this information for further instructions.
PRESSURE SENSOR
<0004>
Manifold pressure is outside normal operating range (or sensor has failed).
Check the Diagnostic Screen record ALL data. Call the factory with this
information for further instructions.
RS485 FAULT
<0008>
RS-485 Communications Error.
LOOP FAULT
<0010>
This would only be displayed if the dual 4-20 mA DC option was installed
and one or both current loops are open. Check the wiring to
load/monitoring circuit on both 4-20 mA loops.
CONFIG FAULT
<0080>
There is an error in Setup Screen #2 – Number Zones Installed field, or in
RDM Setup Screen #1 – Number of MZ monitors on Network field. Check
that the number of zones installed for each MZ unit and the actual number
of MZ units on the network are properly programmed. Check to ensure that
the manifold solenoid cable connector in each MZ unit is securely fastened
to its terminal connector. If necessary, reset to the factory default settings.
4.5.5.
Reset to Factory Default Settings
IMPORTANT: Performing this function wipes out all program parameters, alarms, faults,
trends and log files.
1.
2.
3.
4.
5.
6.
Press and hold down the UP and DOWN arrow keys on the MZ monitor (page 13).
Cycle AC power OFF then ON.
Hold the keys until the second beep is heard.
The screen will indicate “This unit has been reset to factory default conditions”.
Release the keys.
Reprogram the MZ as described in this manual.
4.5.6. Clearing System Faults
If the fault condition is associated with an MZ, the monitor will return to normal operation soon after the
problem is corrected. At that time the YELLOW LED will turn off and any external alarms connected to the
monitor’s alarm relays will also turn off. The RD will return to normal operation the next time it polls the
affected MZ monitor.
Once the system malfunction has been corrected it may take some time for the fault condition to clear
completely. If the fault is associated with a specific zone, the MZ must first cycle back to the affected zone
before it returns to normal operation. At that time the YELLOW LED will turn off and any external alarms
connected to the monitor’s alarm relays will also turn off. The RD will return to normal operation the next
time it polls the affected monitor.
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P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
4.5.7. Viewing Fault Log
A data log of the last 20 fault conditions is retained in memory. On the Fault Screen, select the LOG option
to view a display of the fault log.
Figure 4-8. Fault Log Screen
This screen lists potential fault conditions in the left column and displays a check mark indicating which
problems were associated with each fault condition as represented by the vertical cursor bar. As you move
the bar horizontally using the LEFT/RIGHT cursor keys, the date and time the fault condition was detected is
displayed in the upper right hand corner of the display window.
NOTE: Anytime the fault status changes, there is an entry in the fault log, both when the
fault occurs and when it is cleared.
NOTE: The Fault Log can be reset by pressing a combination of the ENTER and RIGHT
arrow buttons while viewing the log.
4.5.8. Viewing Flow Log
On the Fault Log screen, press ENTER to access the Flow Log screen. The Flow Log displays the last 20
flow events for all zones and the purge port.
ZONES 1 - 8
UP/DN KEY TOGGLES ZONES
Figure 4-9. Flow Log Screen
P/N: 3015-5074 Rev 13
39
Multi-Zone Gas Monitors
This screen lists the zones in the left column and displays flow data. Use the UP/DOWN buttons to scroll
through the zones and the LEFT/RIGHT to scroll through the log data. As you move the bar horizontally,
the date and time of the condition is displayed in the upper right hand corner.
The Flow Log can be reset by pressing a combination of the ENTER and RIGHT arrow buttons while
viewing the log.
4.6. The Trend Screen
4.6.1. Navigating to the Trend Screen
From the Zone Screen, select the Trend option on the bottom left side. This will open the Trend screen.
The trend graph opens with the cursor located over the most recent data point. Use the LEFT/RIGHT cursor
keys to move the cursor to different data points. Holding a key down will cause the cursor to move rapidly
across the screen. As you move the cursor position, the date and time of that reading, along with the PPM
value, are displayed at the top of the screen above the graph. The trend graph is automatically scaled to
accommodate the largest PPM value displayed. The ZOOM OUT and ZOOM IN options allow you to adjust
the vertical scale of the graph.
st
The trend data is stored on a first-in, first-out basis. After 100 trend values have been stored the 101 value
will replace the first value stored. Therefore, in normal operation, when entering trend mode the cursor will
be located at the most recent data point. The data points to the left of the initial cursor location will be the
next most recent. The data point to the right will be the oldest data point in the buffer and will be over
written by the next data point.
Figure 4-10. Trend Screen
NOTE: The Trend Data Log can be reset by pressing a combination of the ENTER and
RIGHT arrow buttons while viewing the log.
When finished, press the ESC key to revert to the previous screen.
4.7. The Calibration Screen
4.7.1. Overview
The Calibration Screen is used to adjust the calibration factor for each gas. It is also used to program the
instrument (Halogen only) for new gases.
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P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
IMPORTANT: Changing information on CAL FACTOR will void the factory calibration.
Typically, the unit will remain within the factory-calibrated accuracy indefinitely and no
calibration is required. Complex software algorithms adjust for temperature drift, IR source
aging, and pressure changes in order to keep the unit within factory accuracy
specifications.
4.7.2. Navigating to the Calibration Screen
On the System Setup screen, select the Calibration option (CAL).
Figure 4-11. Calibration Screen (HGM and AGM Only)
4.7.3. Calibration Procedure (HGM and AGM Only)
The CAL FACTOR is determined by sampling a known dilution of the type of gas to be sampled. Calibration
is best performed at or near full scale. It can, however, be done at any concentration, and ideally in the
range where maximum accuracy is desired down to, but not below, 100 PPM.
A cylinder of the desired gas at a certified PPM level must be used to assure sampling occurs at ambient
conditions. A minimum sample size of 5 liters is required.
The MZ monitor should be operating for at least one hour prior to performing a calibration.
Prepare the MZ for sampling by initially setting its CAL FACTOR to 1.000. Next, set up the MZ for a logging
interval of zero minutes, and place the MZ monitor in its zone hold mode for the zone you wish to use for
calibration purposes.
Connect the sample bag directly to the intake port for the zone you have set up and allow the MZ monitor to
sample the entire bag. When sampling is complete, view the trend data for the zone used to sample. Read
the measured PPM by placing the cursor on the spikes cause by the sample. If the bag was large enough
for multiple samples, average the most stable ones.
The new CAL factor is computed by dividing the known gas value by the measured value. Typically this
value will be between 0.95 and 1.05. This value is stored in non-volatile memory.
4.7.4. Adjusting Calibration Factor (HGM and AGM Only)
The factory default cal factor for standard units is 1.000. This value may be different if the high accuracy
option is ordered.
Proceed as follows to adjust the current calibration factor:
1. Use the PREV GAS or NEXT GAS options to scroll through the list of gases until the gas you wish
to work with is displayed.
2. Select the CAL FACTOR option to edit the value.
3. Use the LEFT/RIGHT cursor keys to move across the entry field and the UP/DOWN cursor keys
to modify the individual numbers.
4. Press ENTER to accept the new entry or ESC to revert to the previous setting.
P/N: 3015-5074 Rev 13
41
Multi-Zone Gas Monitors
NOTE: The CO2 calibration is a more complex, 2-point calibration. CO2 units are factory
calibrated and not intended to be calibrated in the field. Refer to screens in section 4.7.5
for CO2 calibration screen details.
4.7.5. CO2 Atmospheric Concentration
Because CO2 is present in ambient air, a relative reading is used to determine the amount of CO2 coming
from a leak. The CAL screen offers the ability to manually enter the ambient CO2 concentration. This value
is typically in the range of 380-400 ppm, however concentrations may vary slightly based on geographic
locations or other factors (the factory default setting is 386 ppm).
IMPORTANT: The ambient CO2 level is set at the factory to 386 ppm and will likely not
need to be changed. If, however, the ambient CO2 concentration at your location is known
to be a value other than this default value, then the instrument’s ambient CO2 setting may
need to be changed.
If needed, adjust the ambient CO2 concentration as follows:
1. From the SYSTEM SETUP menu, navigate to the CAL screen.
2. Ensure the GAS TYPE setting is selected (see Figure 4-12) and press ENTER.
3. CO2 calibration curve options are displayed. Simply press ENTER to access the ambient CO2
concentration setting (PPM IN PURGE). See Figure 4-12.
4. Use the UP/DOWN cursor keys to modify the numbers to set to the appropriate value.
5. Press ENTER to accept the new entry or ESC to revert to the previous setting.
Figure 4-12. Accessing the CO2 Atmospheric Concentration Setting (PPM IN PURGE)
IMPORTANT: Do not alter any other parameters within the Calibration Menu as this will
alter the factory calibration.
4.7.6. Programming New Gases (HGM Only)
As new gases come into use the MZ monitor allows the addition of these new gases to its on-board gas
library. At the end of the gas library list is an option labeled CUSTOM for adding new gases. From the
Calibration Screen use the LEFT/RIGHT arrows to select CUSTOM from the list of gases. Next, press
ENTER, and use the UP/DOWN arrow keys to enter the calibration factor. The selection of the matching
gas and CAL factor is performed by Bacharach by analyzing the new gas. Once the matching gas is
determined, field calibration is possible by using the same procedure as for other gases. When the new gas
entry is complete simply setup the appropriate zone for CUSTOM.
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P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
Program the instrument for a new gas as follows:
1. From the Calibration Screen, use the PREV GAS or NEXT GAS options to scroll through the list of
available choices until the CUSTOM option is displayed.
Figure 4-13. Custom Gas Screen (HGM Only)
2. Select the CUSTOM option. Press ENTER to accept the new entry or ESC to revert to the
previous setting.
3. Enter the new CAL Factor as received from Bacharach.
4.8. Zone Hold Mode
A zone can be placed on hold and continuously monitored for a length of time determined by the Zone Hold
Time value. To place a zone on hold, select the zone at the main run screen, then press and hold down the
ENTER key until the unit beeps. The word “HOLDING” will appear in the status box.
While in the hold mode, further investigation of the zone’s status can be made by navigating to that Zone’s
Setup Screen #1. To release the zone from the hold mode, press and hold down the ENTER key until the
unit beeps and the screen display returns to normal.
P/N: 3015-5074 Rev 13
43
Multi-Zone Gas Monitors
4.9. The Diagnostic Screen
4.9.1. Navigating to the Diagnostic Screen
On the System Setup screen, select the Diagnostic option (DIAG).
Figure 4-14. Diagnostic Screen
44
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
4.9.2. Diagnostic Screen Overview
The Diagnostic Screen contains sensor data and status information useful for trouble shooting various fault
conditions. An explanation of the information provided on each line of this screen is listed below, including
normal operating ranges.
Field Name
xxxx FEET
xx ZONE name
Description
Programmed length of tubing for an active zone.
Current active zone and user-programmed name. This field may also show “WARM UP”
during warm up mode.
DET
Detector Voltage – Peak-to-peak output of the IR sensor. In the absence of gas, this value
range is 4.100V to 4.300V.
AVE
Average Detector Voltage – Running average of the values displayed in line 1.
ZERO
Zero Voltage – IR sensor output that was stored during the last purge cycle and has the same
range as line 1.
NOISE
A 16 point running average of the noise portion of IR bench output. This reading is valuable
mostly when gas is not present.
AVEAU
Average Absorbency – Optical absorbency computed from the Average Detector Voltage and
Zero Voltage. In the absence of selected gas, the absorbency is 0.000AU. When sampling
desired gas, its value varies proportionally with the gas concentration.
UM/L
uMoles/L – Absolute concentration in micro-moles per liter of gas based on Noise and the
internal calibration. There are two figures displayed. The first (annotated by a B) is the actual
measurement at the IR bench. The second is the calculated value corrected to ambient
conditions (temperature + pressure).
PPM
Parts Per Million is the volume concentration referenced to standard temperature and
pressure and is computed from the Average Absorbency, Zero Temperature and Ambient
Pressure. There are two figures displayed. The first (annotated by a B) is the actual PPM at
the IR bench. The second is a PPM reading normalized to standard temperature and
pressure.
ZERO
Zero Temperature – Displays the sensor and enclosure temperature measured and stored
during the last purge cycle in degrees C.
BENCH
BOX
PRES
Bench Temperature – Current IR sensor temperature in degrees C as well as the raw voltage
coming from the temperature sensor. This value can range from ambient to ambient +15
degrees C.
Box Temperature – This is the current internal enclosure temperature along with the raw
voltage from the temperature sensor, and has the same range as the Bench temperature.
Pressure – This is the current absolute manifold pressure in PSIA along with the output
voltage of the pressure sensor. This value should always be 0.2 to 1.0 PSIA below ambient
(AMB).
VAC
Vacuum – The vacuum pressure is measured every purge cycle by closing all sample valves.
Its value is typically 2.5 to 4.0 PSIA below ambient pressure.
AMB
Ambient – Ambient pressure is measured every purge cycle with the sample pump off and the
manifold open. Its value is weather and altitude dependent and can range from 10.0 to
15.5 PSIA.
FAULT
Fault code listed in hexadecimal. See Fault Code list.
y.yyyX
Calibration multiplier used when measuring concentration.
TCx.xxxx
MODBUS data
Temperature Compensation – magnitude of voltage applied to sensor output (in volts).
Factory use only.
485 RX=x
485 TX=x
P/N: 3015-5074 Rev 13
Receive port number of bytes
Transmit port number of bytes
FUNC
REG=xxxxx
Function
Register address
45
Multi-Zone Gas Monitors
46
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
SECTION 5. MAINTENANCE
WARNING: Shock hazard! Always disconnect AC power before opening the enclosure of
the monitor.
WARNING: The AC power ground wire must first be connected to the monitor’s ground
stud. Under no circumstances should this monitor be operated without a protective
ground. Doing so poses a potential shock hazard, and is a violation of electrical safety
standards applicable to this type of equipment.
WARNING: Electrical installation should be performed by a certified electrician, and must
comply with all applicable NEC/CEC and local electrical safety codes.
IMPORTANT: The MZ monitor contains sensitive electronic components that can be easily
damaged. Do not touch nor disturb any components. Do not dislodge electrical wiring or
pneumatic tubing.
5.1. Replacement Parts Overview
Part Name
P/N
Description
3015-3125
The charcoal filter removes refrigerant gas from the purge-air
stream during the purging process. Replace the charcoal filter
(P/N 3015-3125) approximately every 6 months, when a zero
filter fault occurs (fault code <0100>), or after the monitor has
been exposed to unusually high levels of refrigerant gas, such
as after an evacuation alarm.
Hydrophobic
Filter
0007-1650
The hydrophobic filter prevents water from entering the IR
detector. A zone flow fault will occur (fault code <0800>) if this
filter becomes blocked. Replace the hydrophobic filter as
required (P/N 0007-1650).
Air Line Tubing
0304-2743
0304-2742
The gas sample line and optional exhaust line should be periodically checked for
obvious signs of kinks, damage and contamination. Replace the tubing as required
(P/N 0304-2743 or 0304-2742 for Ammonia).
Line End Filter
Assembly
3015-3420
Line End Filter
3015-2906
Charcoal Filter
(Halogen
Monitor Only)
End-of-Line
Water Stop
3015-5512
P/N: 3015-5074 Rev 13
The gas-sample line filter and purge-line termination filters
prevent dust and dirt from entering the monitor. Both of the filters
should be periodically checked and replaced when there are
obvious signs of contamination.
•
A zone flow fault will occur (fault code <0800>) if the gassample line filter becomes blocked
•
A purge flow auto will occur (fault code <1000>) if the purgeline filter becomes blocked.
Remove the filter from the line and replace it with a new one.
The end-of-line water stops prevent contaminants and moisture
from entering the monitor. This filter should be periodically
checked and replaced when there are obvious signs of
contamination.
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Multi-Zone Gas Monitors
Part Name
P/N
Water Trap
0007-1655
Description
The water trap removes moisture that enters tubing before
allowing it to enter the internal components of the MZ unit. The
water trap should be emptied often as condensate
accumulates. The water trap filter should be periodically
checked and replaced when there are obvious signs of
contamination.
Fuses
04-2620
The MZ monitor is protected from electrical damage by two, 1A, 250 V, type “F”
fuses. Locate the fuse holders and carefully remove the fuses from their holders.
Inspect and test the fuses with an ohm meter for continuity. Replace the fuses as
required.
Clock Battery
204-0020
The clock battery maintains the correct date and time when AC power is not
applied to the monitor. Replace this battery approximately every 5 years. Battery
shelf life is 10 years.
3015-5176
The sample pump draws the gas sample into the monitor through the IR detector
and discharges the sample via the exhaust port. To replace the pump, remove the
inlet and outlet tubing, disconnect the AC power wires from the pump and remove
the pump from the monitor. Install a new sample pump.
3015-5171
Up to three additional intake manifolds (4 zones each) can be installed in the MZ
monitor to increase the total capacity to 16 zones. Each manifold requires a 4-zone
line end filter kit (3015-3411). (Follow the instructions provided to install the
manifolds. Then follow the instructions earlier in this manual to install the air lines
and complete the zone programming steps. The MZ setup must also be updated to
recognize the new zones.)
3015-5595
Stainless steel version of 3015-5171.
3015-5152
The optional 4–20 mA DC Interface Board allows the operator to take advantage of
the current loop interfaces provided for connection of external devices to the MZ
monitor. The interface board plugs into the sockets provided on the valve/pump
drive PCB, and the external devices are then cabled to the MZ monitor as
described earlier in this manual.
Sample Pump
Intake
Manifold Kit
4–20 mA DC
Interface
Board
5.2. Replacement Parts and Optional Accessories
Replacement Parts
Part
Number
Item Description
Battery: Panasonic CR2032, 3V
Warning:
In compliance with agency approvals & safety regulations, the battery must be
replaced with the specified Bacharach replacement part.
0204-0020
Filter: Charcoal, Zero Air
3015-3125
Filter: Hydrophobic (Internal)
0007-1650
Filter: End of Line – Assembly (Termination/gas sample line)
3015-3420
Filter: End-of-Line (Filter Only)
3015-2906
Filter: End-of-line water stop
3015-5512
Charcoal Filter Mounting Bracket
3015-2969
Fuse: 1.0 A, 250 V, Type “F”
0004-2620
Replacement Pump
3015-5176
Tubing: ¼ in OD (For HGM and CO2; by the foot)
0304-2743
Tubing: ¼ in OD (For AGM; by the foot)
0304-2742
48
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
Item Description
Part
Number
¼” to 6 mm Reducer Kit (10)
3015-5389 (10)
¼” to 6 mm Reducer Kit (8)
3015-5390 (8)
IR Bench Replacement Kit (HGM)
3015-4572
IR Bench Replacement Kit (AGM)
3015-4492
IR Bench Replacement Kit (CO2)
3015-5507
Universal Power Supply
3015-5523
Main PC Board Replacement
3015-5483
Key Pad PC Board
3015-5521
Display PC Board
3015-5522
Power Entry PC Board
3015-5524
Solenoid Valve Manifold Drive PC Board
3015-5542
5 Port Solenoid Block (for HGM and CO2: Zones 1-4 and purge port)
3015-5080
4 Port Solenoid Block (for HGM and CO2: Zones 1-4)
3015-5072
5 Port Stainless Steel Manifold (for AGM; Zones 1-4 and purge port)
3015-5081
4 Port Stainless Steel Manifold (for AGM: Zones 1-4)
3015-5073
Optional Accessories
Item Description
Part
Number
Interface Board, 4-20 mA
3015-5152
Variable Flow Regulator
3015-3849
Four Zone Expansion Kit (must order filters [3015-3411] in conjunction with kit)
3015-5171
Four Zone End-of-Line Filters Kit
3015-3411
Splitter Kit (2-way)
3015-5404
Splitter Kit (3-way)
3015-5405
Remote Loop Powered Display Assembly
3015-4992
Manifold Replacement Fittings
3015-5753
Surge Protectors
120 V
3015-4121
230 V
3015-5530
4-20 mA
3015-4123
Alarms
Audible/Visual 120 VAC
3015-3076
Audio-Visual Alarm, 18-28 VDC, Surface Mount
3015-5490
Audio-Visual Alarm, 18-28 VDC, Panel Mount
3015-5491
Audio Alarm, 18-28 VDC, Surface Mount
3015-5492
Audio Alarm, 18-28 VDC, Panel Mount
3015-5493
Annual Maintenance Kits
4 Zone
(5 line end filters,
1 charcoal filter, 1 hydrophobic, 3 end-of-line water stop filters)
3015-5525
8 Zone
(9 line end filters,
1 charcoal filter, 1 hydrophobic, 3 end-of-line water stop filters)
3015-5526
P/N: 3015-5074 Rev 13
49
Multi-Zone Gas Monitors
Item Description
Part
Number
12 Zone (13 line end filters, 1 charcoal filter, 1 hydrophobic, 3 end-of-line water stop filters)
3015-5527
16 Zone (17 line end filters, 1 charcoal filter
3015-5528
1 hydrophobic
3 end-of-line water stop filters)
Gases
R-22 Gas Cylinder, 100 PPM
3015-3850
R-134a Gas Cylinder, 100 PPM
3015-3851
R-123 Gas Cylinder, 100 PPM
3015-3852
R-22 Gas Verification Kit
3015-3430
R-134a Gas Verification Kit
3015-3437
R-123 Gas Verification Kit
3015-3438
Water Traps
Manual Drain Water Trap
0007-1655
Manual Drain Water Trap Replacement Filter
0007-1656
Manual Drain Water Trap Mounting Bracket
0007-1657
Communications Kits
N2 JCI Metasys Communications Kit
3015-4230
LonWorks Communications Kit
3015-4231
BACnet Communications Kit
3015-5606
5.3. Troubleshooting
Certain critical faults may be corrected by checking and adjusting the detector voltage and/or emitter power.
These faults include:
•
•
•
•
CLIPPING FAULT
REZERO VOLT TOL
OVER RANGE DETECTED
GAIN SET FAULT
<8000>
<4000>
<2000>
<0200>
To troubleshoot any of the above faults, use the procedure listed below.
1. With the monitor in either Warm Up Mode (flashing green LED) or Sampling Mode (solid green
LED), access the Setup Menu by pressing the ENTER key twice.
2. Scroll to the bottom right of the screen to select the “Service Mode Entry” option.
3. With the “Service Mode Entry” option highlighted, press ENTER twice to enter Service Mode.
4. Scroll to the “SYSTEM” option and press ENTER.
5. Scroll to the “MORE” option and press ENTER. Note that “MORE” will flash when it is selected.
6. Scroll to and select the “IR DIGIPOT” option (see below) and press ENTER.
7. Use the UP and DOWN arrows to adjust the MW reading to 450 (or as close as possible). When
at the proper value, press ESC once.
50
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
DIGIPOT= 180
IR VOLT= 4.21
V= 4.7
R= 49
MA= 96
MW= 450
Figure 5-1. Sample DIGIPOT Readings
8. Scroll to “DET DIGIPOT” option (see above) and press ENTER.
9. Use the UP and DOWN arrows to adjust the IR VOLT reading to 4.20 (or as close as possible).
When at the proper value, press ESC once.
IMPORTANT! If IR VOLT does not reach 4.200 ±0.100 volts when adjusting the
DIGIPOT, return to step 6 to lower the IR emitter setting. If the IR emitter setting is
450 ±20 mW, adjust the new IR emitter setting to 375 ±20 mW. Repeat step 8 with
the new IR emitter setting.
10. Press ESC to save.
11. Press ESC to get to the System Menu. Scroll to Service Mode and press ENTER twice to leave
Service Mode. Press ESC once and allow the instrument to complete a pressure check and
purge cycle (approximately 2 minutes).
If the faults cannot be cleared using the above procedure, call the factory for further assistance.
P/N: 3015-5074 Rev 13
51
Multi-Zone Gas Monitors
52
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
APPENDIX A. RECOMMENDED REFRIGERANT GAS ALARM
SETTINGS
Gas
Alarm Settings (PPM)
Leak
Spill
Evacuate
CO2/R-744
1500
2000
3000
FA188
100
300
FC72
100
H1301
Gas
Alarm Settings (PPM)
Leak
Spill
Evacuate
R402B
100
300
500
500
R404A
100
300
500
300
500
R407A
100
300
500
100
300
500
R408A
100
300
500
H1211
100
300
500
R407C
100
300
500
H2402
100
300
500
R409A
100
300
500
H1234YF
100
300
500
R410A
100
300
500
HFP
100
300
500
R422A
100
300
500
N1230
100
300
500
R422D
100
300
500
NH3/R-717
50
150
300
R424A
100
300
500
R11
100
300
500
R426A
100
300
500
R12
100
300
500
R427A
100
300
500
R21
100
300
500
R438A
100
300
500
R22
100
300
500
R500
100
300
500
R23
100
300
500
R502
100
300
500
R32
100
300
500
R503
100
300
500
R113
100
300
500
R507
100
300
500
R114
100
300
500
R508B
100
300
500
R123
25
35
50
R-717/NH3
50
150
300
R124
100
300
500
R-744/CO2
1500
2000
3000
R125
100
300
500
H1234ZE
100
300
500
R134A
100
300
500
R407F
100
300
500
R227
100
300
500
N7100
75
200
300
R236FA
100
300
500
N7200
25
50
100
R245FA
100
300
500
N7300
10
20
50
R401A
100
300
500
N7600
3
5
8
R402A
100
300
500
P/N: 3015-5074 Rev 13
53
Multi-Zone Gas Monitors
54
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
APPENDIX B. RS-485 COMMUNICATIONS PROTOCOL
B.1. Overview
The following instructions are intended as a guide for integrating the MZ network into a Building Management System. If
you are unfamiliar with complex systems of this type, it is recommended that you contact Bacharach for technical
assistance.
B.2. MODBUS RTU Protocol
The MZ monitor communicates with master devices (such as the Remote Display or a Building Management System)
over the RS-485 serial interface. Because the monitor is configured with a two wire RS-485 serial bus, data
transmission occurs in “half-duplex” mode. Therefore, only one device may be in transmit mode at any given time.
This document specifies the MODBUS communications protocol as implemented on the applicable
instruments. Programmers should refer to the MODBUS Protocol Reference Guide for details and more
comprehensive instructions. The guide is available at www.modbus.org. Specific communications software is
available at: http://www.MyBacharach.com/downloads.htm
B.3. MZ MODBUS RTU Operation
B.3.1. Overview
The MZ and RD are equipped to communicate with other equipment using the MODBUS RTU protocol. Using this
communications channel a MODBUS master device may communicate with up to 15 MZ monitors on a communications
network, exchanging measurement information, alarm data, fault data, history (logs and trends) and setup information.
Additionally, the MODBUS master can control the operating state of an MZ monitor, placing the MZ in any of its different
operating modes. The network may be configured so that the MZ monitors are connected directly to the MODBUS
master device, or the MODBUS master device may communicate with the MZs through the RD.
NOTE: This document was written with the assumption that the reader is familiar with the
various setup parameters and operational modes for the Multi-Zone.
B.3.2. Protocol Details
A 2-wire RS-485 bus is used for transmission, therefore communications occurs in a Half-Duplex mode. The MZ
is a slave device and will respond to queries in the MODBUS RTU format from a master device.
Three MODBUS functions are supported. They are function 03 (read holding register), function 06 (write single
register), and function 16 (Preset Multiple registers – for block mode only). Please refer to the MODBUS Protocol
Reference Guide (available at www.modicon.com/techpubs/techPubNew/PI_MBUS_300.pdf) for protocol detail
and use instructions.
In addition to the standard register groups found in the 2000 and 3000 address ranges, a block mode access is
provided for OEMs who need efficient access to the complete range of system variables using the least amount of
queries. The block modedata is organized into structures (internal to the MZ monitor) which can be accessed by
the MODBUS registers defined in this document. A corresponding set of data structures should be maintained by
the master device. These master device data structures become the destination for responses to read queries
and sources for preset register commands. When a read holding register query is made by the master device the
MZ monitor responds by sending the contents of the structure referenced by the specified register. After the
master validates the MZ response using the CRC bytes, it must then move the data into its matching data
structure before individual items may be accessed or modified. Therefore, the master data structure should
correspond to the MZ data structure byte for byte. Note that some data structures have been divided into multiple
registers due to MODBUS RTU message length constrains. To change a setting in the MZ monitor, the master
device first reads the register structure that contains the data item to be modified, makes the desired change, then
sends the structure back using the preset multiple register function. If the transaction is successful, the MZ
monitor sends the appropriate MODBUS response. It is the responsibility of the master device, when making
modifications, to insure that all parameters transferred are within the working limits of the MZ.
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Multi-Zone Gas Monitors
IMPORTANT: Each time parameters are modified and sent back to the monitor using
function 16 (preset multiple registers), the new values are written to the monitor's nonvolatile FLASH memory. Due to the finite write life of the FLASH memory device (10K100K write cycles), modifying and writing variables should be performed on an “as needed”
basis and not periodically. Exceeding the FLASH write life can result in memory
corruption, requiring a CPU board replacement.
B.3.3. MZ Monitor Polling
After the MZ monitors are setup and operating, the master device need only poll each monitor for its status
register which contains summary data of the monitors’ alarms, faults, and operating state. If exceptions are
detected through the status register and more details are required, additional registers can be examined.
Also if current PPM values are required, the PPM register provides access to current PPM values for all
zones. The MZ monitor requires a minimum of 20 seconds to complete a gas concentration measurement
for a single zone. Therefore, it is not necessary to poll the MZ monitor more frequently than once every 1520 seconds, as there will not be any new data available/obtained by more frequent polling. In fact,
excessive polling will slow the operation of the MZ. Under no circumstances should the MZ monitor be
continuously polled at rate faster than 500 ms, as this could result in erroneous readings by the MZ monitor.
B.3.4. Network Topologies
MZ monitors may be connected directly to the MODBUS network or they may be connected to the network
through a Remote Display. In either case, each MZ monitor must have a unique node ID. Up to 15 MZ
monitors can be connected directly to the MODBUS network.
If MZ monitors are accessed via an RD connected to a MODBUS network, the RD “BMS enabled”
parameter must be set equal to “1” via the “RDM SETUP” screen on the Remote Display. The same
commands and registers are used to communicate with the MZ directly or through the RD. If the
communications are through the RD, it monitors each MODBUS message to determine if the message is
intended for one of the MZ monitors it is connected to. If it is, the RD passes the message through to the
MZ monitors. If it is not, the message is not passed through. The RD does not make any modifications to
MODBUS messages. It simply passes the query through to the MZ monitor, and passes the response back
to the MODBUS master. In other words, it allows the MZ monitors to be logically connected to the
MODBUS network, when physically they are connected to the local RD network.
IMPORTANT: It is very important to understand that the RD will only pass messages
through to the MZ monitor when the RD is either in the “SYSTEM” screen or the “ZONE
VIEW” screen. If the RD is in any other screen, it will return a MODBUS “busy” exception
response (exception code 06).
All RD screens, except the SYSTEM and ZONE VIEW screens, have a 10 minute timeout interval. After
this, the screen will return to the SYSTEM or ZONE VIEW screen, depending on which one was last
displayed. The RD may also be password protected so that a password entry is required in order to view
screens other than the SYSTEM or ZONE VIEW screen.
B.3.5. Key Comm Protocol Parameters
Parameter
MODBUS Mode
MZ Baud Rate
Parity
Stop Bits
Maximum Response Time
Error Checking
56
Description
RTU only
Default is 19,200. Programmable as defined in system data register.
No Parity
Default is 1. Can be set for 2 via System data register.
4000 ms when directly accessing the MZ monitor.
8,000 ms when accessing the MZ monitor through the RD.
CRC per MODBUS specifications
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Multi-Zone Gas Monitors
NOTE: All data sent out from the MZ is in “little endian” byte order (least significant byte
followed by most significant byte). This should be taken into account if the master that
process the data is a “big endian” type. Non-data information (starting address, number of
points, etc.) follows normal MODBUS protocol, which is Big Endian.
B.3.6. MODBUS Exception Responses
The following MODBUS exception responses are supported by the unit.
01
02
03
06
Illegal Function
Illegal Data Address
Illegal Data Value
Slave Device Busy (Occurs only when MZ is connected to the bus through an RD and the RD is
not in the SYSTEM or ZONE VIEW screen)
B.3.7. MODBUS Gas Enumeration
The following table provides decimal and hexadecimal MODBUS enumerations for supported refrigerant
Refrigerant Gas
CO2/R-744
NH3/R-717
R11
R12
R22
R23
R113
R114
R123
R124
R134A
R401A
R402A
R402B
R404A
R407A
R407C
R409A
R410A
R500
R502
R503
R507
R508B
H1301
R408A
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DEC
0
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
HEX
00
00
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
Refrigerant Gas
FA188
R236FA
N1230
R227
HFP
FC72
R21
R125
H1211
H2402
R245FA
R422A
R422D
R427A
H1234YF
R424A
R426A
R438A
R32
H1234ZE
R407F
N7100
N7200
N7300
N7600
Custom
DEC
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
HEX
18
19
1A
1B
1C
1D
1E
1F
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
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Multi-Zone Gas Monitors
B.4. Standard Register Summary
B.4.1. Dynamic Register Summary (2000 Series; R; Function Code 03)
Register
Address
58
Description
Type
Range
2000
FAULT CODE
UNSIGNED INT
0-65535
2001
PPM ZONE 1
UNSIGNED INT
0-65535
2002
PPM ZONE 2
UNSIGNED INT
0-65535
2003
PPM ZONE 3
UNSIGNED INT
0-65535
2004
PPM ZONE 4
UNSIGNED INT
0-65535
2005
PPM ZONE 5
UNSIGNED INT
0-65535
2006
PPM ZONE 6
UNSIGNED INT
0-65535
2007
PPM ZONE 7
UNSIGNED INT
0-65535
2008
PPM ZONE 8
UNSIGNED INT
0-65535
2009
PPM ZONE 9
UNSIGNED INT
0-65535
2010
PPM ZONE 10
UNSIGNED INT
0-65535
2011
PPM ZONE 11
UNSIGNED INT
0-65535
2012
PPM ZONE 12
UNSIGNED INT
0-65535
2013
PPM ZONE 13
UNSIGNED INT
0-65535
2014
PPM ZONE 14
UNSIGNED INT
0-65535
2015
PPM ZONE 15
UNSIGNED INT
0-65535
2016
PPM ZONE 16
UNSIGNED INT
0-65535
2017
ALARM LEVEL ZONE 1
UNSIGNED INT
0-3
2018
ALARM LEVEL ZONE 2
UNSIGNED INT
0-3
2019
ALARM LEVEL ZONE 3
UNSIGNED INT
0-3
2020
ALARM LEVEL ZONE 4
UNSIGNED INT
0-3
2021
ALARM LEVEL ZONE 5
UNSIGNED INT
0-3
2022
ALARM LEVEL ZONE 6
UNSIGNED INT
0-3
2023
ALARM LEVEL ZONE 7
UNSIGNED INT
0-3
2024
ALARM LEVEL ZONE 8
UNSIGNED INT
0-3
2025
ALARM LEVEL ZONE 9
UNSIGNED INT
0-3
2026
ALARM LEVEL ZONE 10
UNSIGNED INT
0-3
2027
ALARM LEVEL ZONE 11
UNSIGNED INT
0-3
2028
ALARM LEVEL ZONE 12
UNSIGNED INT
0-3
2029
ALARM LEVEL ZONE 13
UNSIGNED INT
0-3
2030
ALARM LEVEL ZONE 14
UNSIGNED INT
0-3
2031
ALARM LEVEL ZONE 15
UNSIGNED INT
0-3
2032
ALARM LEVEL ZONE 16
UNSIGNED INT
0-3
2033
(STATUS) MODE
UNSIGNED INT
0-3
2034
(STATUS) STATE
UNSIGNED INT
0-4
2035
RESERVED
UNSIGNED INT
0
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Multi-Zone Gas Monitors
Register
Address
Description
Type
Range
2036
(STATUS) ACTIVE ZONE
UNSIGNED INT
1-16
2037
(STATUS) MAX ALARM
UNSIGNED INT
0-3
2038
(STATUS) ACTIVE ALARM COUNT
UNSIGNED INT
0-16
2039
(STATUS) ACK'D ALARM COUNT
UNSIGNED INT
0-16
2040
RESERVED
UNSIGNED INT
0
2041
(STATUS) FAULT CODE
UNSIGNED INT
0-65535
2042
(STATUS) AUDIBLE ALARM
UNSIGNED INT
0-1
2043
(STATUS) SILENCED
UNSIGNED INT
0-1
2044
(STATUS) HIGHEST CONC ZONE
UNSIGNED INT
1-16
2045
(STATUS) HIGHEST CONCENTRATION
UNSIGNED INT
0-65535
2046
(STATUS) ZONES INSTALLED
UNSIGNED INT
4,8,12,16
2047
(SENSOR) MANIFOLD PRESSURE x100
UNSIGNED INT
0-1600
2048
(SENSOR) AMBIENT PRESSURE x100
UNSIGNED INT
0-1600
2049
(SENSOR) VACUUM PRESSURE x100
UNSIGNED INT
0-1600
2050
(SENSOR) BENCH TEMP x100
SIGNED INT
0-6000
2051
(SENSOR) AVE VOLTAGE x1000
UNSIGNED INT
0-5000
2052
(SENSOR) ZERO VOLTS x1000
UNSIGNED INT
0-5000
2053
(SENSOR)AVE AU x10000
UNSIGNED INT
0-30000
2054
(SENSOR) BENCH PPM
UNSIGNED INT
0-65535
B.4.2. Dynamic Register Summary (2000 Series; R; Function Code 03)
Register
Address
Description
Type
Range
3000
REFRIGERANT TYPE ZONE 1
UNSIGNED INT
0-49
3001
REFRIGERANT TYPE ZONE 2
UNSIGNED INT
0-49
3003
REFRIGERANT TYPE ZONE 3
UNSIGNED INT
0-49
3003
REFRIGERANT TYPE ZONE 4
UNSIGNED INT
0-49
3004
REFRIGERANT TYPE ZONE 5
UNSIGNED INT
0-49
3005
REFRIGERANT TYPE ZONE 6
UNSIGNED INT
0-49
3006
REFRIGERANT TYPE ZONE 7
UNSIGNED INT
0-49
3007
REFRIGERANT TYPE ZONE 8
UNSIGNED INT
0-49
3008
REFRIGERANT TYPE ZONE 9
UNSIGNED INT
0-49
3009
REFRIGERANT TYPE ZONE 10
UNSIGNED INT
0-49
3010
REFRIGERANT TYPE ZONE 11
UNSIGNED INT
0-49
3011
REFRIGERANT TYPE ZONE 12
UNSIGNED INT
0-49
3013
REFRIGERANT TYPE ZONE 13
UNSIGNED INT
0-49
3013
REFRIGERANT TYPE ZONE 14
UNSIGNED INT
0-49
3014
REFRIGERANT TYPE ZONE 15
UNSIGNED INT
0-49
3015
REFRIGERANT TYPE ZONE 16
UNSIGNED INT
0-49
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Multi-Zone Gas Monitors
Register
Address
60
Description
Type
Range
3016
LEAK LEVEL ZONE 1
UNSIGNED INT
>0 <SPILL PPM
3017
LEAK LEVEL ZONE 2
UNSIGNED INT
>0 <SPILL PPM
3018
LEAK LEVEL ZONE 3
UNSIGNED INT
>0 <SPILL PPM
3019
LEAK LEVEL ZONE 4
UNSIGNED INT
>0 <SPILL PPM
3030
LEAK LEVEL ZONE 5
UNSIGNED INT
>0 <SPILL PPM
3031
LEAK LEVEL ZONE 6
UNSIGNED INT
>0 <SPILL PPM
3033
LEAK LEVEL ZONE 7
UNSIGNED INT
>0 <SPILL PPM
3033
LEAK LEVEL ZONE 8
UNSIGNED INT
>0 <SPILL PPM
3034
LEAK LEVEL ZONE 9
UNSIGNED INT
>0 <SPILL PPM
3035
LEAK LEVEL ZONE 10
UNSIGNED INT
>0 <SPILL PPM
3036
LEAK LEVEL ZONE 11
UNSIGNED INT
>0 <SPILL PPM
3037
LEAK LEVEL ZONE 12
UNSIGNED INT
>0 <SPILL PPM
3038
LEAK LEVEL ZONE 13
UNSIGNED INT
>0 <SPILL PPM
3039
LEAK LEVEL ZONE 14
UNSIGNED INT
>0 <SPILL PPM
3030
LEAK LEVEL ZONE 15
UNSIGNED INT
>0 <SPILL PPM
3031
LEAK LEVEL ZONE 16
UNSIGNED INT
>0 <SPILL PPM
3032
SPILL LEVEL ZONE 1
UNSIGNED INT
>LEAK <EVAC PPM
3033
SPILL LEVEL ZONE 2
UNSIGNED INT
>LEAK <EVAC PPM
3034
SPILL LEVEL ZONE 3
UNSIGNED INT
>LEAK <EVAC PPM
3035
SPILL LEVEL ZONE 4
UNSIGNED INT
>LEAK <EVAC PPM
3036
SPILL LEVEL ZONE 5
UNSIGNED INT
>LEAK <EVAC PPM
3037
SPILL LEVEL ZONE 6
UNSIGNED INT
>LEAK <EVAC PPM
3038
SPILL LEVEL ZONE 7
UNSIGNED INT
>LEAK <EVAC PPM
3039
SPILL LEVEL ZONE 8
UNSIGNED INT
>LEAK <EVAC PPM
3040
SPILL LEVEL ZONE 9
UNSIGNED INT
>LEAK <EVAC PPM
3041
SPILL LEVEL ZONE 10
UNSIGNED INT
>LEAK <EVAC PPM
3042
SPILL LEVEL ZONE 11
UNSIGNED INT
>LEAK <EVAC PPM
3043
SPILL LEVEL ZONE 12
UNSIGNED INT
>LEAK <EVAC PPM
3044
SPILL LEVEL ZONE 13
UNSIGNED INT
>LEAK <EVAC PPM
3045
SPILL LEVEL ZONE 14
UNSIGNED INT
>LEAK <EVAC PPM
3046
SPILL LEVEL ZONE 15
UNSIGNED INT
>LEAK <EVAC PPM
3047
SPILL LEVEL ZONE 16
UNSIGNED INT
>LEAK <EVAC PPM
3048
EVAC LEVEL ZONE 1
UNSIGNED INT
>SPILL -10K PPM
3049
EVAC LEVEL ZONE 2
UNSIGNED INT
>SPILL -10K PPM
3050
EVAC LEVEL ZONE 3
UNSIGNED INT
>SPILL -10K PPM
3051
EVAC LEVEL ZONE 4
UNSIGNED INT
>SPILL -10K PPM
3052
EVAC LEVEL ZONE 5
UNSIGNED INT
>SPILL -10K PPM
3053
EVAC LEVEL ZONE 6
UNSIGNED INT
>SPILL -10K PPM
3054
EVAC LEVEL ZONE 7
UNSIGNED INT
>SPILL -10K PPM
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
Register
Address
Description
Type
Range
3055
EVAC LEVEL ZONE 8
UNSIGNED INT
>SPILL -10K PPM
3056
EVAC LEVEL ZONE 9
UNSIGNED INT
>SPILL -10K PPM
3057
EVAC LEVEL ZONE 10
UNSIGNED INT
>SPILL -10K PPM
3058
EVAC LEVEL ZONE 11
UNSIGNED INT
>SPILL -10K PPM
3059
EVAC LEVEL ZONE 12
UNSIGNED INT
>SPILL -10K PPM
3060
EVAC LEVEL ZONE 13
UNSIGNED INT
>SPILL -10K PPM
3061
EVAC LEVEL ZONE 14
UNSIGNED INT
>SPILL -10K PPM
3062
EVAC LEVEL ZONE 15
UNSIGNED INT
>SPILL -10K PPM
3063
EVAC LEVEL ZONE 16
UNSIGNED INT
>SPILL -10K PPM
3064
DISTANCE ZONE 1
UNSIGNED INT
0-1200ft
3065
DISTANCE ZONE 2
UNSIGNED INT
0-1200ft
3066
DISTANCE ZONE 3
UNSIGNED INT
0-1200ft
3067
DISTANCE ZONE 4
UNSIGNED INT
0-1200ft
3068
DISTANCE ZONE 5
UNSIGNED INT
0-1200ft
3069
DISTANCE ZONE 6
UNSIGNED INT
0-1200ft
3070
DISTANCE ZONE 7
UNSIGNED INT
0-1200ft
3071
DISTANCE ZONE 8
UNSIGNED INT
0-1200ft
3072
DISTANCE ZONE 9
UNSIGNED INT
0-1200ft
3073
DISTANCE ZONE 10
UNSIGNED INT
0-1200ft
3074
DISTANCE ZONE 11
UNSIGNED INT
0-1200ft
3075
DISTANCE ZONE 12
UNSIGNED INT
0-1200ft
3076
DISTANCE ZONE 13
UNSIGNED INT
0-1200ft
3077
DISTANCE ZONE 14
UNSIGNED INT
0-1200ft
3078
DISTANCE ZONE 15
UNSIGNED INT
0-1200ft
3079
DISTANCE ZONE 16
UNSIGNED INT
0-1200ft
3080
ALARM ACK ZONE 1
UNSIGNED INT
1=ACK 0=NACK
3081
ALARM ACK ZONE 2
UNSIGNED INT
1=ACK 0=NACK
3082
ALARM ACK ZONE 3
UNSIGNED INT
1=ACK 0=NACK
3083
ALARM ACK ZONE 4
UNSIGNED INT
1=ACK 0=NACK
3084
ALARM ACK ZONE 5
UNSIGNED INT
1=ACK 0=NACK
3085
ALARM ACK ZONE 6
UNSIGNED INT
1=ACK 0=NACK
3086
ALARM ACK ZONE 7
UNSIGNED INT
1=ACK 0=NACK
3087
ALARM ACK ZONE 8
UNSIGNED INT
1=ACK 0=NACK
3088
ALARM ACK ZONE 9
UNSIGNED INT
1=ACK 0=NACK
3089
ALARM ACK ZONE 10
UNSIGNED INT
1=ACK 0=NACK
3090
ALARM ACK ZONE 11
UNSIGNED INT
1=ACK 0=NACK
3091
ALARM ACK ZONE 12
UNSIGNED INT
1=ACK 0=NACK
3092
ALARM ACK ZONE 13
UNSIGNED INT
1=ACK 0=NACK
3093
ALARM ACK ZONE 14
UNSIGNED INT
1=ACK 0=NACK
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Multi-Zone Gas Monitors
Register
Address
Description
Type
Range
3094
ALARM ACK ZONE 15
UNSIGNED INT
1=ACK 0=NACK
3095
ALARM ACK ZONE 16
UNSIGNED INT
1=ACK 0=NACK
3096
ALL ALARM ACK
UNSIGNED INT
1=ACK 0=NACK
B.5. Block Mode Register Summary
B.5.1. Summary of Registers
Register
Name Number
HEX
Decimal
System Data
Status
Zone Data
CAL Data
Date/Time
Sensor Data
Rel. Hold
Hold Zone
Fault Log
0x0010
0x0011
0x12xx
0x0014
0x0015
0x0016
0x0017
0x0018
0x19xx
16
17
4609-4630
20
21
22
23
24
6400-6401
Flow Log
0x001F
31
Alarm Log
Serv. Mode
Rel Serv.
PPM
0x1Axx
0x001B
0x001C
0x001E
6656-6658
27
28
30
Zone Log
0x3yxx
0-6
Description
R/W
R/W
R/W
R/W
R/W
R
W
W
R
System Setup Data
Operating summary of faults, alarms and status
Setup data for up to 16 zones (xx defines zone number)
Cal Factors for all gases
Set MZ date & time
Raw measurement of sensors
Release MZ out of hold mode
Put MZ into hold mode
20 most recent fault events (xx = 00 or 01)
R
20 most recent flow fault events
R
20 most recent alarm events (xx = 00, 01, or 02)
W
Puts MZ into service mode
W
Release MZ from service mode
R
PPM values for all zones
Trend data for each MZ zone [y = zone # (starting at 0), xx = 00 – 06]
Data
Data Type Abbreviations
C
Float
I
TIM
UI
Character
Floating Point
Integer
Time
Unsigned Integer
B.5.2. System Data Register 0x0010 (16 Dec) (R/W, 54 Bytes)
Variable
Type
Length
Description
UI
Float
UI
2 bytes
4 bytes
2 bytes
UC
1 byte
Location
C
13 bytes
Stop_Bits
C
1 byte
Indicates EEPROM has been initialized if value = 300 DO NOT MODIFY
Firmware Rev Level DO NOT MODIFY
Firmware Serial Number DO NOT MODIFY
Network Slave Node # (valid values are 1-15). The default is that
indicated by the Node DIP Switch on main board.
Array defining text name of unit
Number of stop bits used in the MZ data stream. Default = 1. Other
available value is 2
Type
REV
UNUSED
Node
62
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
Variable
Type
Length
Aud_Alarm
UC
1 byte
Alarm_Ack_
Mode
UC
1 byte
Num_Zones
UC
1 byte
UNUSED
TIM
13 bytes
Rezero_Mode
UC
1 byte
Hold_Time
UI
2 byte
UNUSED
UC
1 byte
Avg_Size
UC
1 byte
Float
UI
4 bytes
2 bytes
RS485_BAUD
UI
2 bytes
Mode
UI
2 bytes
Loop2_factor
Serv_Mode_TO
Description
Sounds internal board buzzer on condition; 0 = no buzzer; 1= Alarm;
2=Fault; 3=Leak; 4=Spill; 5=Evacuate; 6=Monitor Off line (DEFAULT =
0)
Defines Alarm Operation. Manual Acknowledge = 0; Auto Acknowledge
= 1 (DEFAULT = 0)
Number of install zones (Value initialized during auto detect during
Power On Self Test).
UNUSED
Defines re-zero mode. Auto Re-zero = 0; Re-zero every zone = 1
(DEFAULT = 0)
Length of zone hold interval in minutes (DEFAULT = 15 minutes)
Minimum detection limit (in PPM). Concentrations less than or equal this
value will read as 0 PPM (DEFAULT = 0 PPM)
Size of running average used in computing PPM value. DO NOT
MODIFY.
Defines PPM current loop output. (DEFAULT = 0.16 mA/PPM)
Service Mode Timeout value (in minutes). (DEFAULT = 60 MINUTES)
BAUD RATE for RS-485 connection (between RD and MZ monitor or
MODBUS master and MZ depending on the Network topology).
Default=9 (19.2K); other values are 8=9600, 7=4800
UNUSED
B.5.3. Status Register 0x011 (17 Dec) (R/W, 10 Bytes)
Variable
Type
Length
Description
1 byte
Defines Operating Mode of MZ. 0 = normal Mode; 1 = Zone_Hold Mode; 2
= Diagnostic Mode; 3 = Service mode. DO NOT MODIFY (use zone hold
register or service mode register to change this parameter)
Mode
UC
State
UC
1 byte
Defines MZ Current State. 0 = Idle; 1 = Sampling; 2 = Zeroing; 3 = Warm
Up, 4 = Pressure Check DO NOT MODIFY
Measuring
UC
1 byte
Value = 1 if unit is acquiring detector signal for running avg. DO NOT
MODIFY
Active_Zone
UC
1 byte
Current Zone being checked. 0=zone 1, 1=zone 2, etc.
Max _Alarm
UC
1 byte
Indicates highest non-acknowledged alarm level DO NOT MODIFY
Alarm_Count
UC
1 byte
Number of alarms that are currently active. DO NOT MODIFY
UNUSED
UC
1 byte
UNUSED
Loop_Card
UC
1 byte
Value = 1 if 4-20 mA card has been detected. DO NOT MODIFY
Fault
UI
2 bytes
Fault Flag Structure uses bitwise access to 16 bit word as defined in the
table below.
P/N: 3015-5074 Rev 13
63
Multi-Zone Gas Monitors
B.5.4. Fault Code Table
BIT
Fault Type
Code
Description
15
CLIPPING FAULT
0x8000
0x8000 Sensor output voltage too high
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ZERO RANGE FAULT
OVER RANGE FAULT
PURGE FLOW FAULT
ZONE FLOW FAULT
A2D FAULT
GAIN SET FAULT
ZERO FILTER FAULT
CONFIG FAULT
UNUSED FAULT 2
UNUSED FAULT 1
LOOP FAULT
RS485 FAULT
MANIFOLD P FAULT
BENCH T FAULT
BOX T FAULT
0x4000
0x2000
0x1000
0x0800
0x0400
0x0200
0x0100
0x0080
0x0040
0x0020
0x0010
0x0008
0x0004
0x0002
0x0001
Sensor output voltage outside limits during purge
Gas concentration above measurable range
No flow detected during purge cycle
No flow detected during sample cycle
Analog to digital converter not working
Digipot gain setting out of normal range
Charcoal filter (if used) needs replacement
No zones are enabled
Current loop is open
Communications error
Pressure sensor readings are out of range
Sensor temperature is out of range
Chassis temperature is out of range
B.5.5. Zone Data Register 0x12xx (R/W, 78 Bytes)
Each zone for an MZ has a separate zone data structure that is 78 bytes long. The zone number is the low
order byte in the register address (i.e., Zone 1 data register = 0x1201h).
Variable
Type
Length
Location
C
13 bytes
Flow OK
UC
1 byte
Description
13 byte array, Alpha Numeric Description or Name of Zone
Status of Flow check. Value of 1 indicates flow check is good. DO NOT
MODIFY.
Refrigerant
Type
Distance
UC
1 byte
See note 1 Below (DEFAULT = R134a)
UI
2 bytes
Zone Tubing Length (in feet) (DEFAULT = 100 feet [approx. 30.5 meters])
Zone Temp
I
2 bytes
Concentration
Concentration2
Float
Float
4 bytes
4 bytes
Average temperature at zone (degrees C) (DEFAULT = 25°C)
Last Measured concentrations (uM/L) DO NOT MODIFY
Last Measured concentration (PPM) DO NOT MODIFY
Set value to 1 to acknowledge Alarm.
Alarm Ack
UC
1 bytes
Alarm
Leak Level
Spill Level
Evac Level
Peak PPM
Peak Time
Alarm Time
Alarm Ack/Time
Log Interval
UC
UI
UI
UI
UI
TIM
TIM
1 bytes
2 bytes
2 bytes
2 bytes
2 bytes
13 bytes
13 bytes
13 bytes
2 bytes
64
UI
NOTE: MZ will reset this byte to 0 when the Alarm byte
(below) is = 0 and zone in alarm is sampled. If the alarm
condition/byte increases (leak>>spill or spill>>evac) the MZ
will also reset this byte to 0.
Alarm Status; 0 = no alarm, 1 = leak; 2 = spill; 3 = evac.
Level to trigger a leak alarm (in PPM) (DEFAULT = 100)
Level to trigger a spill alarm (in PPM) (DEFAULT = 300)
Level to trigger a evacuate alarm (in PPM) (DEFAULT = 500)
Highest Recorded PPM in zone
Date an time of highest peak (see note 2 for format)
Date and time of last alarm (see note 2 for format)
Number of minutes between Log entries (DEFAULT = 1440)
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
NOTE: Refer to the Recommended Alarm Settings & Gas Enumeration table on page 53.
NOTE: Time Structure Format consists of 13 unsigned character types. They are 1
second digit, 10 second digit, 1 minute digit, 10 minute digit, 1 hour digit, 10 hour digit, 1
day digit, 10 day digit, 1 month digit, 10 month digit, 1 year digit, 10 year digit, last byte is
unused.
B.5.6. Alarms and Alarm Acknowledge
The Multi-Zone can be operated in two different alarm acknowledge modes, Auto and Manual (set via the
alarm_ack_mode variable in the system data register). For purposes of this discussion, the term “Alarm”
refers to an MZ state where the alarm light is on and the appropriate alarm relay is activated. The term
“Alarm condition” refers to the external condition (i.e., refrigerant leak) that initially causes the MZ monitor to
go into an alarm. If an alarm occurs it can be handled in one of 3 ways.
1. Non-Latching Mode. This mode is enabled by setting the AUTO_ACK_MODE parameter in the
system register to “1”. In this mode, if an alarm condition occurs an MZ alarm will be created. If the
alarm condition is subsequently removed, the MZ alarm will automatically be cleared by the MZ
monitor when the zone in alarm is sampled “clear”. Note, in this mode of operation, it is possible for
an alarm to occur and be cleared without user or MODBUS master intervention. If this is the case,
the only evidence of the alarm would be contained in the MZ alarm log.
2. Latching Mode with Silence. This mode is enabled by setting the AUTO_ACK_MODE in the
system register to “0”. In this mode, if an alarm condition occurs, an MZ alarm will be created. In
order for the alarm to be removed the MODBUS master will write a “0” to the ALARM parameter in
the ZONE register. This will cause the alarm to be “silenced” in the MZ monitor (i.e., the alarm relays
will return to their normal state and the ALARM lamp will be extinguished). The next time the zone
with the alarm condition is sampled, if the alarm condition still exists, the alarm will be reactivated and
the alarm parameter will be reset to “1” in the MZ. Otherwise, if the alarm condition has cleared, no
further action is required and normal operation will resume.
3. Latching Mode without Silence. This mode is enabled by setting the AUTO_ACK_MODE in the
system register to “0”. In this mode, if an alarm condition occurs, an MZ alarm will be created. The
MZ MODBUS master will then write a “1” to the ALARM ACK parameter in the zone register. The
alarm will continue to persists (i.e., Relays in alarm state and Alarm light on) until the offending zone
is sampled and no alarm condition is detected. At that point, the ALARM ACK parameter is
automatically cleared by the MZ monitor, as is the ALARM parameter.
NOTE: If the ALARM ACK parameter is set to “1” and the ALARM CONDITION is
upgraded (from leak to spill, or spill to evacuate) the ALARM ACK parameter will
automatically be cleared to “0” by the MZ.
B.5.7. Date Time Register 0x0015 (21 Dec) (R/W, 14 Bytes)
Variable
Date_Time
Type
Length
Time
14 bytes
Description
Contains current time and date. Structure is defined as in note 2 of
zone data
Time Structure Format consists of 14 unsigned character types. They are 1 second digit, 10 second digit, 1
minute digit, 10 minute digit, 1 hour digit, 10 hour digit, a day digit, 10 day digit, 1 month digit, 10 month digit,
1 year digit, 10 year digit, day of the week, last byte is unused.
P/N: 3015-5074 Rev 13
65
Multi-Zone Gas Monitors
B.5.8. Sensor Data Register 0x0016h (22 Dec) (R, 82 Bytes)
Type
Length
Pressure
P_Volts
Vacuum_P
Ambient_P
Box_T
Box_T_Volts
Bench_T
Bench_T_Volts
Bench_Z_T
Box_Z_T
PkPk_int
PkPk
Ave_PkPk
Zero_PkPk
Noise
AU
Ave_AU
Variable
Float
Float
Float
Float
Float
Float
Float
Float
Float
Float
UI
Float
Float
Float
Float
Float
Float
4
4
4
4
4
4
4
4
4
4
2
4
4
4
4
4
4
Bench_PPM
Float
4
STP_PPM
Bench_UML
Ambient_UML
Float
Float
Float
4
4
4
Description
Manifold Pressure is PSIA
Pressure sensor output Voltage
Pressure with all value closed and pump on in PSIA
Absolute Ambient Pressure in PSIA
Enclosure Temperature in Degrees C
Box temp sensor output voltage
Optical bench temperature in Degrees C
Bench temp sensor output voltage
Optical bench temp in degrees C at last zero interval
Box temp in degrees C at last zeroing
Current peak to peak A/D counts from detector
Current peak to peak voltage from detector
Running average voltage from detector
Voltage measured at last zeroing
Largest Change in running average
Current absorbance value
Running Average of absorbance level
PPM in bench based on zone gas selection (uncorrected for
pressure and temperature)
PPM corrected to STP (1 atm, 25 deg C)
Micromoles/liter in bench (uncorrected)
Micromoles/liter corrected to ambient pressure
B.5.9. Release Zone Hold Register 0x0017h (23 Dec) (W, 10 Bytes)
Variable
Rel_Hold
Type
*
Length
*
Description
See description of STATUS REGISTER
B.5.10. Hold Zone Register 0x0018h (23 Dec) (W, 10 Bytes)
Variable
Zone_Hold
Type
*
Length
*
Description
See description of STATUS REGISTER
B.5.11. MZ Hold Mode
The MZ monitor can be made to hold or “dwell” on a particular zone if necessary. The length of the hold
time is defined by the HOLD TIME parameter in the System Data Register.
Placing the MZ Monitor into hold mode:
1. Read the MZ Status Register (0x0011h)
2. Modify the content of the status register structure to change the MODE parameter to zone hold
mode. Active zone parameter to the zone you wish to hold
3. Send this updated status register structure back to the MZ using PRESET MULTIPLE REGISTER
COMMAND to the HOLD ZONE REGISTER (0x0018h).
Releasing the Zone Hold
1. Read the MZ monitor Status Register (0x0011h)
2. Modify the content of the status register to change the MODE parameter to normal mode. Active
zone parameter to the zone which you would like to resume normal activity on
3. Send this updated status register structure back to the MZ using PRESET MULTIPLE REGISTER
COMMAND to the RELEASE HOLD REGISTER (0x0017h).
66
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
B.5.12. Fault Log Register 0x1900-01 (6400-6401 Dec) (R, 302 Bytes)
These registers contain the 20 most recent fault events, the time they occurred, and a pointer to the most
recent event. The data is split into 2 registers. The first register contains 200 bytes and the second register
contains 102 bytes. The results of these two register reads should be recombined into the Fault Log Data
Structure after both have been received.
Variable
Type
Length
Fault
UI
40 bytes
Time
TIM
260 bytes
Ptr
Unused
UC
UC
1 byte
1 byte
Description
20 most recent fault events. Each event is decoded as indicated in Fault
Flag Structure given after the Status Register Description
Time of each fault occurrence. TIM value as defined in NOTE 2 of Zone
Data
Pointer to most recent event
Unused
B.5.13. Flow Log Register 0x001F (31 Dec) (R, 142 Bytes)
Variable
Type
Length
Flow Event
UI
40 bytes
Purge Flow
Event
UC
20 bytes
Time
TIM
80 bytes
Ptr
Unused
UC
UC
1 byte
1 byte
Description
20 most recent flow fault events. Each bit of the unsigned int represents a
zone and a 1 indicates no flow. Zero indicates flow.
20 most recent flow fault events where a 1 indicates no flow. Zero indicates
flow.
Time/date stamps for 20 most recent logged flow events. This variable is an
unsigned long integer formatted as seconds since Jan 1 of 1980
Pointer to most recent event
Unused
B.5.14. Alarm Log Register 0x1A00-02 (6656-58 Dec) (R, 582 Bytes)
These registers contain the 20 most recent alarm events, the time they occurred, and a pointer to the most
recent event. The data is split into 3 registers and should be recombined into an appropriate structure after
all three registers have been received. Register 0x1A00h contain 200 bytes, Register 0x1A01h contains
200 bytes, and register 0x1A02h contains 181 bytes.
Variable
Type
Event
UC
Time
TIM
Ptr
Unused
UC
UC
Length
Description
320
bytes
20 most recent alarm events. Each event contains 1 byte for each zone. Each
zone Byte is defined as 0=No Alarm, 1=Leak Alarm, 2=Spill Alarm, 3=Evac
Alarm.
260
bytes
1 byte
1 byte
Time of each alarm event. TIM value as defined in NOTE 2 of Zone Data
Pointer to most recent event
Unused
B.5.15. Service Mode Register 0x001B (27 Dec) (W, 10 Bytes)
Variable
Type
Length
*
*
Rel_Svc_Mode
Description
See description of STATUS REGISTER
B.5.16. Release Service Mode 0x001C (28 Dec) (W, 10 Bytes)
Variable
Type
Length
*
*
Ent Svc_Mode
P/N: 3015-5074 Rev 13
Description
See description of STATUS REGISTER
67
Multi-Zone Gas Monitors
B.5.17. MZ Service Mode
The MZ monitor can be placed into service mode if necessary. During service mode the unit will take no
measurements, any and all alarms are silenced, and all relays are opened. The unit automatically comes
out of service mode after a preset interval defined by the service_mode_TO parameter in the System Data
Register.
Placing the unit into Service Mode:
1. Read the MZ Status Register (0x0011h)
2. Modify the content of the status register structure to change the MODE parameter to service
mode.
3. Send this updated status register structure back to the MZ unit using PRESET MULTIPLE
REGISTER COMMAND to the SERVICE MODE REGISTER (0x001Bh).
Releasing the unit from Service Mode:
1. Read the MZ Status Register (0x0011h)
2. Modify the content of the status register to change the MODE parameter to normal mode.
3. Send this updated status register structure back to the MZ unit using PRESET MULTIPLE
REGISTER COMMAND to the RELEASE SERVICE MODE REGISTER (0x001Ch).
B.5.18. PPM Register 0x001E (30 Dec) (R, 32 Bytes)
Variable
PPM
Type
UI
Length
32 bytes
Description
16 Unsigned Integers that represent the PPM values for each MZ monitor
zone
NOTE: 16 values are returned independent of the number of actual zones installed in the
unit. The master device is required to know how many zones are installed in the unit
(available in the System Register) in order to properly interpret the data.
B.5.19. Zone Log Registers 0x3xyy (R, 1502 Bytes)
These registers are used to transfer the zone log data. Each zone has a circular log of 100 past data points.
The period between data points is defined by the Log Interval parameter in each corresponding Zone Data
Register. The data for each zone is defined by the “x” place in the above register address. For zone 1 the
Register address is 0x30yyh, for zone 2 the register address is 0x31yyh, etc. The data for each zone is sent
in 8 consecutive registers due to MODBUS RTU message length constrains. The addresses are defined by
the “yy” place in the above address. For zone 1, all log data can be obtained by reading 0x3000h, 0x3001h,
0x3002h, …… , 0x3007h. The first seven registers contain 200 bytes each and the last register contains
102 bytes. After all registers have been received the data should be reassembled into the full data
structure.
Variable
Type
Length
Index
UI
2
Time
TIM
1300
PPM
UI
200
68
Description
Point to current reading
Time record for each of the 100 log points. The format for the TIM type is
defined in note 2 of zone data
Last 100 log points (2 byes per point)
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
APPENDIX C. SYSTEM MENU MAP
P/N: 3015-5074 Rev 13
69
Multi-Zone Gas Monitors
70
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
APPENDIX D. AGENCY APPROVALS
P/N: 3015-5074 Rev 13
71
Multi-Zone Gas Monitors
72
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
European Standard EN14624: 2005 testing with R-134a (Halogen Gas Monitor Only).
Min. Sensitivity Threshold
1 ppm
Max. Sensitivity Threshold (within 1 ppm ± 10% reading accuracy range)
1,000 ppm
Max. Sensitivity Threshold within Instrument Reading Range
10,000 ppm
Zeroing Time from 1,000 ppm*
<12 seconds
Zeroing Time from 10,000 ppm*
<25 seconds
Reaction Time for detection of minimum threshold*
≤12 seconds
Min. Sensitivity threshold once max. threshold has been measured
1 ppm
Repeatability at 500 ppm
± 1% of reading
* Based on a minimum tubing length of one foot
P/N: 3015-5074 Rev 13
73
Multi-Zone Gas Monitors
74
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
APPENDIX E. SERVICE CENTERS
United States
Bacharach, Inc.
621 Hunt Valley Circle
New Kensington, PA 15068
Phone 724-334-5051
Fax:
724-334-5723
Email: help@MyBacharach.com
Canada
Bacharach of Canada, Inc.
20 Amber Street Unit #7
Markham, Ontario L3R 5P4
Canada
Phone: 905-470-8985
Fax:
905-470-8963
Email: support@BachCan.ca
Europe
Murco Limited – a Bacharach Company
114a Georges Street Lower
Dun Laoghaire
Co. Dublin
Ireland
Phone: 353 1 284 6388
Fax:
353 1 284 6389
Email: sales@murco.ie
P/N: 3015-5074 Rev 13
75
Multi-Zone Gas Monitors
76
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
INDEX
NUMBERS
0007-1650 ..................................................47, 48
0007-1655 ............................................12, 47, 54
0007-1656 ..................................................12, 54
0007-1657 ..................................................12, 54
0204-0020 ........................................................ 48
0304-3235 ........................................................ 47
0304-5111 ........................................................ 48
04-2620 ............................................................ 47
204-0020 .......................................................... 48
3015-2906 ..................................................47, 48
3015-2969 .................................................... 4, 48
3015-3076 ........................................................ 49
3015-3125 ........................................4, 11, 47, 48
3015-3235 ..................................................11, 48
3015-3411 ............................................12, 48, 49
3015-3420 ..................................4, 11, 12, 47, 48
3015-3430 ........................................................ 49
3015-3437 ........................................................ 49
3015-3438 ........................................................ 49
3015-3849 ........................................................ 49
3015-3850 ........................................................ 49
3015-3851 ........................................................ 49
3015-3852 ........................................................ 49
3015-4121 ........................................................ 49
3015-4123 ........................................................ 49
3015-4492 ........................................................ 48
3015-4562 ........................................................ 48
3015-4572 ........................................................ 48
3015-4992 ........................................................ 49
3015-5072 ........................................................ 49
3015-5073 ........................................................ 49
3015-5074 ....................................................... i, 4
3015-5080 ........................................................ 49
3015-5081 ........................................................ 49
3015-5109 ........................................................ 10
3015-5152 ............................................21, 48, 49
3015-5171 ............................................12, 48, 49
3015-5176 ........................................................ 48
3015-5389 ........................................................ 48
3015-5390 ........................................................ 48
3015-5404 ..................................................12, 49
3015-5405 ..................................................12, 49
3015-5483 ........................................................ 48
3015-5490 ........................................................ 49
3015-5491 ........................................................ 49
3015-5492 ........................................................ 49
3015-5493 ........................................................ 49
3015-5512 ........................................4, 12, 47, 48
3015-5521 ........................................................ 48
3015-5522 ........................................................ 49
3015-5523 ........................................................ 48
P/N: 3015-5074 Rev 13
3015-5524 ........................................................ 49
3015-5525 ........................................................ 49
3015-5526 ........................................................ 49
3015-5527 ........................................................ 49
3015-5528 ........................................................ 49
3015-5530 ........................................................ 49
3015-5542 ........................................................ 49
4-20 mA DC outputs/loops ......................... 13, 38
Interface Board ....................................... 21, 48
A
A2D fault .................................................... 37, 59
absorbance ...................................................... 44
AC input power .... 2, 8, 13, 14, 23, 24, 38, 47, 48
disconnecting ................................................. 9
removing prior to service ................................ 2
source ....................................................... 2, 13
terminals ................................................. 13, 23
accessories ....................................... 4, 12, 48-54
accuracy............................................................. 7
acknowledging alarms ............... 6, 33, 34, 35, 62
active diagnostics............................................... 5
address ........................ 17, 28, 30, 45, 61, 59, 67
air lines ................................................. 11, 31, 48
tubing ............................................................ 47
air pump ........................................................... 13
alarm(s) 4-6, 8, 19, 20, 23, 24, 26, 29, 33-35, 38,
47, 49, 59-64, 66, 67
acknowledgement mode ........................ 26, 35
audible .................................... 4, 26, 33, 35, 36
condition ................... 26, 33, 35, 36, 44, 63, 64
detail screen ........................................... 34, 35
event log ....................................................... 36
LED .......................................................... 4, 33
levels .............................................................. 5
log ................................................................. 20
manually acknowledged ............................... 26
nuisance ......................................................... 5
set points ........................................................ 5
settings ................................................... 57, 64
summary screen ..................................... 34, 35
time ............................................................... 34
unacknowledged .......................................... 34
uncleared ...................................................... 34
alphanumeric characters ............... 26, 29, 30, 31
altitude limit ........................................................ 3
ambient air, CO2 presence......................... 11, 42
ambient pressure ............................................. 44
annual maintenance kits .................................. 49
ANSI/BSR ASHRAE 15-2007 ........................ 5, 7
ASHRAE Safety Code 34-2007 ..................... 5, 7
audible alarm ............................. 4, 26, 33, 35, 36
77
Multi-Zone Gas Monitors
B
Bacharach
service center ............................................. 3, 9
website.......................................................... 16
battery .............................................................. 48
replacement schedule .................................. 48
shelf life......................................................... 48
baud rate .......................................................... 28
Belden cable #8762 ......................................... 17
bench....................................................38, 45, 65
temp fault ...................................................... 38
blockage ........................................................... 37
box temp fault ................................................... 38
building management system .....5, 8, 15, 17, 18,
21, 59
bypassing a zone ............................................. 19
C
cable shield ...................................................... 22
cable ties .......................................................... 13
CAL factor .................................................. 40-44
calibration ................................ 18, 20, 41, 42, 45
factor ....................................................... 40-44
factory, voiding ............................................. 41
procedure...................................................... 41
screen ..................................................... 40-43
cautions and warnings ....................................... 1
CE Mark ............................................................. 8
cfg file extension .............................................. 20
charcoal filter .............................. 4, 11, 37, 47-49
chassis temperature ......................................... 44
circuit board ..........................................15, 22, 23
circuit breaker ............................................... 2, 14
clean air ............................................................ 10
cleaning .............................................................. 3
clearing purge line ......................................19, 25
clipping fault ...............................................37, 63
clock battery ..................................................... 48
COM1 and COM2 ............................................ 19
communications parameters ............................ 19
communications protocol ................................... 5
components .................................................. 4, 13
concentration .................................................... 44
condensation .................................................... 12
conduit ........................................................13, 23
config fault ..................................................38, 63
connections ............................................2, 15, 22
exhaust line .................................................. 10
purge line ...................................................... 10
relay .............................................................. 23
sample lines .................................................. 10
contaminants ........................................11, 37, 47
crimp-on ring terminals ..................................... 13
critical faults................................................37, 38
current loop ...............................................22, 38
78
board .............................................................. 4
fault ............................................................... 22
isolator .......................................................... 22
outputs .................................................... 21, 22
cycle time ......................................................... 32
D
damage ................................ 1, 3, 6, 9, 14, 21, 47
preventing during shipment .......................... 13
shipping .......................................................... 9
data display screen .............................. 25, 29, 37
data point ......................................................... 40
date ............... iii, 8, 34, 36, 39, 40, 48, 61, 64, 66
DB25-to-DB9 adapter ...................................... 20
detection limit ................................................... 27
detector connector ........................................... 13
diagnostic screen ........................... 20, 38, 44, 45
digipot ........................................................ 29, 37
dimensions ......................................................... 8
display screen .................................................... 4
distance parameter ............................................ 5
downstream port .............................................. 17
drilling holes ................................................. 9, 14
E
EDIT menu ....................................................... 19
electrical connections and wiring ........... 9, 13, 14
electronic components ................................. 9, 47
emissions ........................................................... 4
emitter .............................................................. 30
EN14624 .......................................................... 67
enclosure ......................... 2, 9, 10, 14, 16, 45, 47
end-of-line filter ................................ 4, 12, 47, 49
ESC key ............................................... 25, 35, 40
evacuation .................................................... 4, 47
alarm .................................... 23, 33, 57, 62, 63
level .............................................................. 33
Excel file ........................................................... 20
exhaust line ............................................ 5, 37, 47
connecting .................................................... 11
max length ...................................... 6, 9, 11, 12
exhaust port ................................................. 2, 48
max length .................................................... 32
exhaust tubing.................................................... 5
explosive atmosphere warning .......................... 2
external alarm .................................. 4, 24, 33, 36
devices, triggering .................................... 4, 23
external monitoring devices ............................. 21
external power source ............................... 23, 24
F
factory default settings ............................... 38, 41
fault(s) .. 4-6, 8, 20, 23, 26, 36-39, 44, 45, 47, 54,
59-63, 66
log ........................................................... 20, 39
screen ..................................................... 37, 39
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
filter(s) .................... iii, 4, 5, 11, 12, 37, 47-54, 63
replacement .................................................. 12
termination .................................................... 12
firmware version ............................................... 25
flammable liquids ........................................... 2, 9
flashing box (alarm condition) ....................34, 44
flow control ....................................................... 19
flow events .................................................39, 66
flow log screen ................................................. 39
viewing .......................................................... 39
front panel ..........................................4, 5, 18, 25
indicator ..........................................4, 5, 18, 25
keypad .......................................................... 25
fuse(s) ........................................3, 13, 24, 47, 48
fuses .....................................................................
G
gain set fault .........................................36, 37, 63
gas inlet ............................................................ 13
gas library ........................................................... 7
gas outlet .......................................................... 13
gas type ............................................................ 44
gas/refrigerant type .......................................... 31
ground ............................................13, 14, 15, 22
GND terminal/stud ........................................ 13
ground wire .............................................13, 14
H
H1234YF ................................................6, 57, 68
H1234ZE ................................................6, 57, 68
Halogen Gas Monitor .............................4, 11, 67
HGM300 PC software ...................................... 18
highest PPM concentration mode .................... 27
hold mode.......................................41, 43, 61, 65
horn ............................................................ 24, 35
humid installation area ....................................... 6
humidity .............................................................. 8
hydrophobic filter ........................................13, 47
I
increase monitoring capacity............................ 12
infrared zero baseline ....................................... 10
in-line fuse ........................................................ 24
installation ...................... 1, 2, 5, 9, 11-13, 21, 38
intake placement .......... 4, 9-11, 12, 37, 47, 48
instruction manual .............................................. 4
intake connectors ............................................. 11
intake line(s) ...............................................11, 12
condensation ................................................ 12
max length .................................................... 12
IR bench/detector .......................................13, 29
replacement kit ............................................. 48
IR digipot .......................................................... 30
IR source connector ......................................... 13
isolated grounds ............................................... 22
P/N: 3015-5074 Rev 13
J
J5 connector .................................................... 13
J6 connector .................................................... 13
jumper wire ...................................................... 22
K
knockout(s) .............................3, 9, 13-15, 22, 23
L
laptop ......................................................... 19, 20
leak .... 4-6, 19, 23, 26, 33, 42, 57, 62, 63, 64, 66
alarm ............................................................ 33
level .............................................................. 33
LED(s) .......................................... 4, 8, 35, 36, 38
length parameter .............................................. 12
LINE 1 .............................................................. 13
LINE 2 .............................................................. 13
line end filter..................................... 4, 11, 12, 47
placement ..................................................... 12
line terminations ............................................... 12
location ..................... 5, 11, 12, 26, 31, 34, 40, 42
log .......................... 20, 32, 36, 39, 40, 64, 67, 68
files ............................................................... 38
interval .......................................................... 32
previous readings ........................................... 4
loop fault .................................................... 38, 63
loop mode ........................................................ 27
loop2 factor ................................................ 21, 27
M
main PC board ................................................. 13
maintenance ........................................ 1, 2, 5, 47
manifold(s) ..........................11-13, 26, 38, 45, 48
pressure ....................................................... 44
replacement fittings ...................................... 49
measurement cycle .............................. 31, 32, 33
measuring range ................................................ 7
mechanical room........................................ 5, 6, 9
memory .................................... 33, 36, 39, 41, 60
menu map .................................................. 69, 67
microprocessor board ...................................... 13
Microsoft Excel file ........................................... 20
MODBUS ................................... 5, 15, 44, 59, 67
function ......................................................... 44
model number .................................................. 29
modifications ...................................................... 3
moisture ............................................... 11, 12, 47
monitoring capacity, increasing ....................... 12
mounting
bracket.......................................................... 12
cutouts ............................................................ 4
location ..................................................... 9, 10
template .................................................... 4, 10
MZ network ................................................ 17, 59
79
Multi-Zone Gas Monitors
N
N7100 .....................................................6, 57, 68
N7200 .....................................................6, 57, 68
N7300 .....................................................6, 57, 68
N7600 .....................................................6, 57, 68
NEC/CEC compliance ................................13, 14
network ...... 16, 17, 28, 30, 31, 34, 35, 38, 59, 60
neutral .............................................................. 13
no flow on purge ............................................... 37
no flow on zone ................................................ 37
node address .......................................17, 28, 30
normally closed ................................................ 23
normally open ................................................... 23
nuisance alarms ................................................. 5
number of installed zones ................................ 26
O
optical bench temperature................................ 44
optical sensor output voltages ......................... 44
output voltages ................................................. 44
outputs.............................................................. 13
over range detected ......................................... 37
P
password .............................................. 28-30, 60
patent ................................................................. ii
PCMCIA slot ..................................................... 20
PCMCIA-to-serial converter ............................. 20
peak concentration/PPM level ...................33, 34
peak time .......................................................... 34
personal computer ....................................... 5, 16
pick up points, determining best locations ......... 6
polarity ........................................................15, 22
polling .........................................................31, 60
power LED.................................................... 4, 25
power supply ..............................................13, 21
de-energizing on malfunction ......................... 3
universal ......................................................... 2
PPM reading ..............................................34, 45
pressure connector .......................................... 13
pressure sensor ............................................... 38
printing screens and logs ................................. 20
programming .................................................... 25
new gases..................................................... 42
protective ground ......................................... 2, 14
pump ....................................................13, 48, 65
purge line..........................................5, 10, 11, 37
clearing ...................................................19, 25
max length ................................................ 6, 11
purge port ...................................................11, 39
R
R-123 gas cylinder and verification kit ............. 49
R-134a gas cylinder and verification kit ........... 49
R-22 gas cylinder and verification kit ............... 49
80
R407F .................................................... 6, 57, 68
RD .......................... See Remote Display Module
RDM setup screen #1 ...................................... 38
reaction time .................................................... 71
receive port ...................................................... 44
reducer kit ........................................................ 48
refrigerant ..................................... 5, 7, 11, 47, 64
monitor vs. analyzer ....................................... 5
register address ............................................... 44
relays ........................... 13, 23, 26, 35, 38, 64, 67
connectors .............................................. 13, 23
contacts .................................................... 4, 23
in the RD ..................................................... 6
rating ......................................................... 23
Remote Display Module .. 6, 8, 15, 17, 31, 35, 36,
59, 60
distance from MZ............................................ 6
max distance to MZ ...................................... 15
remote monitoring equipment ............................ 4
repair ........................................................iii, 3, 13
repeatability...................................................... 71
replacement of filters ......................................... 5
replacement parts ...................................... 47, 48
re-zero mode.................................................... 28
re-zero volt tol ............................................ 36, 37
RS-232 ................................................. 16, 19, 20
cable ....................................................... 19, 20
communications parameters ........................ 19
interface .................................................. 16, 19
output ........................................................... 20
port ........................................................... 5, 19
RS-485 ............................................................ 28
cable, max length ......................................... 17
communications error ................................... 38
connector .......................................... 13, 15, 17
fault ......................................................... 38, 63
interface .......................................................... 5
recommendations ......................................... 17
wiring ............................................................ 15
S
safety ............................... 1, 2, 4, 6, 9, 13, 14, 48
sample intake lines ...........4, 9-11, 12, 37, 47, 48
max length ................................................ 9, 12
sample pump ............................................. 45, 48
sample tubing..................................................... 5
sampling cycle time............................................ 9
sampling points, suggested locations ................ 5
saving screens and logs .................................. 20
Sealevel Systems, Inc. .................................... 20
sensitivity threshold...................................... 7, 71
minimum ....................................................... 71
sensor life ........................................................... 8
sensor temperature .................................... 29, 45
coefficient ..................................................... 30
serial port connection ....................................... 19
P/N: 3015-5074 Rev 13
Multi-Zone Gas Monitors
service ...... ii, 5, 13, 15, 16, 22, 23, 29, 61, 62, 67
centers .......................................................... 75
knockout ....................................................... 13
mode ...........................................28, 29, 62, 67
set points ............................................................ 5
setup................................................................. 25
menu ............................................................. 27
setup screen #2 ..........................................28, 38
shipping ........................................................ 9, 13
shock hazard ............................................2, 3, 14
silence mode .................................................... 35
smoke test .......................................................... 6
software screen ................................................ 20
solenoid ............................................................ 38
connections .................................................... 4
specifications ....................... ii, iii, 7, 8, 10, 41, 61
spill .......... 4, 6, 19, 23, 26, 33, 57, 62, 63, 64, 66
alarm ............................................................. 33
level .............................................................. 33
splash screen ................................................... 25
splitter kit .......................................................... 12
squelch setting ................................................. 27
stand-alone system ............................................ 5
static box .......................................................... 34
strobe .........................................................24, 35
surge protection ................................................. 2
switches............................................................ 13
system faults ............................................4, 8, 36
LED ................................................................. 4
clearning ....................................................... 38
system menu map ......................................69, 71
system setup screen(s) ........... 21, 27, 29, 41, 44
screen #1 ...................................................... 25
screen #2 ....................................25, 26, 28, 31
screen #3 ................................................28, 29
xls file extension............................................... 20
T
Z
T-bolt bracket ..................................................... 4
temperature ........................................................ 8
coefficient...................................................... 29
compensation ............................................... 44
terminal connector ............................................ 38
terminating multiple monitors ........................... 17
terminating the cable shield ............................. 22
termination switches ......................................... 13
terminator(s) ...............................................16, 17
tolerance........................................................... 37
transmit port ..................................................... 44
trend .................................. 20, 32, 38, 40, 41, 59
graph............................................................. 40
data ...................................................20, 40, 41
screen ...............................................32, 35, 40
zero filter fault ............................................ 37, 63
zeroing time ..................................................... 71
zone(s) .... 5, 8, 26, 27, 31, 32, 36-40, 48, 60, 61,
62, 63, 67
current .......................................................... 44
hold mode..................................................... 43
hold time ....................................................... 27
name ............................................................ 34
number ....................................... 27, 34, 61, 63
setup screen ........................... 5, 12, 31, 32, 35
zones ...................................................................
disabling ....................................................... 12
maximum number........................................... 4
tubing ............................. 8, 11, 12, 45, 47, 48, 71
bend radius ................................................... 11
installing ....................................................... 11
length ...................................................... 32, 44
removing ....................................................... 11
restrictions ...................................................... 5
twisted shielded pair ........................................ 15
U
UL classification ................................................. 3
unused zones ................................................... 12
disabling ......................................................... 5
UPS .................................................................... 2
upstream port ................................................... 17
USB-to-serial converter ............................. 19, 20
V
vacuum pressure ............................................. 44
W
warm up cycle .................................................. 25
warm up screen ............................................... 25
warnings and cautions ....................................... 1
warranty .........................................................iii, 8
registering on-line ...........................................iii
voiding .............................................. 1, 3, 9, 14
washers ............................................................ 13
water stop .................................. 6, 12, 47, 48, 54
website ............................................................. 16
wet installation area ........................................... 6
Windows .................................................... 19, 20
www.dataforth.com .......................................... 22
X
∇ ∇ ∇
P/N: 3015-5074 Rev 13
81
Headquarters:
621 Hunt Valley Circle, New Kensington, PA 15068-7074
Toll Free: 800-736-4666 • Tel: +1-724-334-5000 • FAX: +1-724-334-5001
Website: www.MyBacharach.com • E-mail: help@MyBacharach.com
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® Registered Trademark of Bacharach Inc.