CAUTION
WARNING – EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR CLASS I, DIVISION 1, OR EQUIVALENT AS STATED IN USER MANUAL
AVERTISSEMENT – RISQUE D’EXPLOSION-LA SUBSTITUTION DE COMPOSANTS PEUT
RENDURE CE MATERIEL INACCEPTABLE POUR LES EMPLACEMENTS DE CLASSE I,
DIVISION
CAUTION: FOR SAFETY REASONS, THIS EQUIPMENT MUST BE OPERATED AND
SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND THE
INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING OR SERVICING.
ATTENTION: POUR DES RAISONS DE SECURITE, CET ÉQUIPEMENT DOIT ETRE
UTILISE ENTRETENU ET REPARER UNIQUEMENT PAR UN PERSONNEL QUALIFIE.
ETUDIER LE MANUEL D' INSTRUCTIONS EN ENTIER AVANT D' UTILISER, D'
ENTERETENIR OU DE RÉPARER L' ÉQUIPEMENT.
CAUTION: THIS AREA MUST BE FREE OF FLAMMABLE GASES DURING CALIBRATION.
ATTENTION : CETTE ZONE DOlT ETRE EXEMPTE DE GAZ INFLAMMABLES PENDANT
L'ETALONNAGE.
CAUTION:TO PREVENT IGNITION OF EXPLOSIVE ATMOSPHERES, REMOVE FROM
EXPLOSIVE ATMOSPHERE BEFORE SERVICING
WARNING: A CONDUIT SEAL MUST BE USED WITHIN 18 INCHES OF THE ENCLOSURE
WALL TO COMPLY WITH THE HAZARDOUS LOCATION RATING OF THIS PRODUCT
DANGER
DANGER: OTIS INSTRUMENTS INC. OI-6000-X-X-X-X-O IS AN AMBIENT AIR
HAZARDOUS GAS SENSOR ASSEMBLY AND ONLY MONITORS IN THE IMMEDIATE
VICINITY OF THE SENSOR HOUSING. A SITE SURVEY IS REQUIRED IN ORDER TO
DETERMINE THE BEST PLACEMENT AND QUANTITY OF SENSOR ASSEMBLIES.
IMPROPER INSTALLATION CAN LEAD TO AN UNDETECTABLE GAS LEAK WHICH
COULD RESULT IN PERSONAL INJURY OR LOSS OF LIFE.
TABLE OF CONTENTS
TABLE OF CONTENTS
1
1.1
1.2
1.3
1.3.1
1.3.2
1.3.3
PRODUCT OVERVIEW
INTRODUCTION .................................................................................................................................................... 1
PRODUCT SPECIFICATIONS ............................................................................................................................... 2
SYSTEM DIAGRAMS ............................................................................................................................................. 3
EXTERNAL SYSTEM DIAGRAM ........................................................................................................................... 3
INTERNAL SYSTEM DIAGRAM............................................................................................................................. 4
ASSEMBLY DIAGRAM ........................................................................................................................................... 5
2
2.1
2.2
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.5.1
2.3.5.1.1
2.3.5.1.2
2.3.5.2
2.3.5.2.1
2.3.5.2.2
2.3.6
2.3.7
2.4
2.5
INSTALLATION AND START-UP
PRODUCT PLACEMENT ....................................................................................................................................... 6
PRODUCT MOUNTING ......................................................................................................................................... 7
WIRING CONFIGURATIONS ................................................................................................................................. 7
OPENING THE ENCLOSURE ................................................................................................................................ 8
CONNECTING POWER ......................................................................................................................................... 8
CONNECTING 4-20 mA OUTPUT ....................................................................................................................... 10
CONNECTING RS-485 ........................................................................................................................................ 12
CONNECTING RELAYS/ALARMS ....................................................................................................................... 14
CONNECTING RELAY1 ....................................................................................................................................... 14
CONNECTING NORMALLY OPEN (NO) RELAYS .............................................................................................. 16
CONNECTING NORMALLY CLOSED (NC) RELAYS.......................................................................................... 17
CONNECTING RELAY 2 ...................................................................................................................................... 18
CONNECTING NORMALLY OPEN (NO) RELAYS .............................................................................................. 19
CONNECTING NORMALLY CLOSED (NC) RELAYS.......................................................................................... 20
CONNECTING THE FAULT TERMINAL .............................................................................................................. 21
CLOSING THE ENCLOSURE .............................................................................................................................. 22
SYSTEM START-UP ............................................................................................................................................ 22
NORMAL OPERATING MODE............................................................................................................................. 23
3
3.1
3.1.1
3.2
3.3
3.4
3.5
3.6
3.7
3.7.1
3.7.2
3.8
3.8.1
3.8.2
3.9
3.10
PRODUCT SETTINGS AND CONFIGURATION
RELAY TEST ........................................................................................................................................................ 24
PERFORMING THE RELAY TEST ...................................................................................................................... 25
NETWORK ID ....................................................................................................................................................... 25
SYSTEM INFORMATION ..................................................................................................................................... 26
NULL/CALIBRATION TIMER INFORMATION ..................................................................................................... 26
UNIT INFORMATION ........................................................................................................................................... 27
BACKGROUND SETTING.................................................................................................................................... 27
LATCHING AND NON-LATCHING RELAY SETTINGS ....................................................................................... 28
RELAY 1: LATCHING/NON-LATCHING SETTING ............................................................................................. 28
RELAY 2: LATCHING/NON-LATCHING SETTING ............................................................................................. 29
RELAY FAIL-SAFE SETTINGS ............................................................................................................................ 29
RELAY 1: FAILSAFE SETTING........................................................................................................................... 30
RELAY 2: FAILSAFE SETTING........................................................................................................................... 30
CALIBRATION METHOD ..................................................................................................................................... 31
MODBUS ADDRESS SETTING ........................................................................................................................... 32
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
i
TABLE OF CONTENTS
3.11
3.12
3.12.1
3.12.2
3.13
3.14
MODBUS BAUD SETTING................................................................................................................................... 33
4-20 mA OFFSET SETTINGS .............................................................................................................................. 34
ZERO OFFSET SETTING .................................................................................................................................... 34
FULL-SCALE OFFSET SETTING ........................................................................................................................ 35
DISPLAY SCREEN CONTRAST SETTING ......................................................................................................... 35
RETURN TO FACTORY DEFAULT SETTINGS .................................................................................................. 36
4
4.1
4.1.1
4.1.2
4.2
4.2.1
4.2.2
4.2.3
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4. 4
4.5
OPERATION SETTINGS
POWERING THE DEVICE ................................................................................................................................... 38
POWERING OFF.................................................................................................................................................. 38
POWERING ON ................................................................................................................................................... 38
SENSOR CALIBRATION ...................................................................................................................................... 39
NULLING THE SENSOR ...................................................................................................................................... 39
CALIBRATING THE SENSOR (MANUAL CALIBRATION) .................................................................................. 41
CALIBRATING THE SENSOR (AUTO CALIBRATION) ....................................................................................... 42
SENSOR ALARM SETTINGS .............................................................................................................................. 44
SENSOR LOW ALARM SETTING........................................................................................................................ 44
SENSOR LOW ALARM RISE/FALL SETTING..................................................................................................... 45
SENSOR HIGH ALARM SETTING ....................................................................................................................... 45
SENSOR HIGH ALARM RISE/FALL SETTING .................................................................................................... 46
SENSOR RADIO ADDRESS ................................................................................................................................ 46
MANUAL RESET FOR ACTIVATED LATCHING ALARMS ................................................................................. 47
5
5.1
5.2
5.3
5.4
PRODUCT MAINTENANCE
SCHEDULED MAINTENANCE............................................................................................................................. 48
SENSOR REPLACEMENT ................................................................................................................................... 49
PRODUCT TROUBLESHOOTING ....................................................................................................................... 50
PRODUCT REPLACEMENT PARTS AND ACCESSORIES ................................................................................ 51
APPENDICES
APPENDIX A: INTRODUCTION TO 4-20 mA CURRENT LOOP SIGNALS ............................................................................. 53
APPENDIX B: MODBUS COMMUNICATIONS......................................................................................................................... 55
APPENDIX C: MODBUS REGISTER MAP ............................................................................................................................... 57
APPENDIX D: PRODUCT WARRANTY STATEMENT ............................................................................................................. 60
APPENDIX E: INFORMATION ABOUT RMA SERVICE REPAIRS .......................................................................................... 63
APPENDIX F: INFORMATION ABOUT RMA RETURNS FOR CREDIT .................................................................................. 65
ii
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT OVERVIEW
1 PRODUCT OVERVIEW
1.1 INTRODUCTION
The Otis Instruments, Inc. (Otis) GEN II Model OI-6000-X-X-X-X-O (OI-6000) Explosion-Proof Ambient Air
Hazardous Gas Detector is designed to detect a wide range of toxic gases in potentially hazardous environments.
This product is CSA certified as Class I, Division 1, Groups C and D and rated for Zone 1, Group IIB. The OI-6000
features non-intrusive magnetic switches that allow for complete system configuration, regular calibration, and
product maintenance to be performed in the field, without opening the enclosure and breaking the seal of the
enclosure, thereby compromising the explosion-proof rating of the device. Non-intrusive interface with the OI-6000
is made possible by use of the Otis Magnetic Tool included in the purchase of the device. The OI-6000 display screen
will always show the present concentration of gas being detected by the sensor assembly.
This document is an operation manual containing diagrams and step-by-step instructions for the proper and safe
installation, start-up, configuration and settings, normal operation, and product maintenance of the OI-6000.
In this manual, the instructions reference the use of push-buttons, located on the front panel of the device. In certain
environments, the activation of the non-intrusive magnetic switches, through the use of the Otis Magnetic Tool, will
replace the directive of the button-press actions. To apply the Otis Magnetic Tool, hold the tool to the side of the
device enclosure adjacent to the push-button that you wish to activate. When the magnetic switch is toggled, an onscreen indicator will appear on the display screen, signifying that a connection was made.
NOTICE
This document should be read in its entirety before the initial operation of the product.
Should a question arise during the use of the product, this document will serve as a first reference for the end-user.
For inquiries beyond the information and instructions provided within this manual, contact the sales representative
of this product for assistance.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
1
PRODUCT OVERVIEW
1.2 PRODUCT SPECIFICATIONS
System Specifications
Operating Voltage
Current Draw
Operating Temperature Range
Humidity Range
Measurement Range
Response Time
Protection
Display
Interface
+12 to +35 VDC
250 mA Maximum
-40⁰C to +54⁰C
0% to 98% Relative Humidity, Noncondensing
Varies based on gas type
Varies based on gas type
Power Electromagnetic Interference (EMI) Filter
4-20 mA Surge Suppression
RS-485 Modbus Surge Suppression
Transflective (sunlight-readable)
102x64 LCD Screen
LED Back-Light
3 Push-Buttons (MENU, ADD, SUB)
3 Magnetic Switches for Non-Intrusive Operation
LOW and HIGH Alarm Indicator LEDs
Outputs
Wired (Analog)
Wired (Digital)
WireFree (Optional)
Relays (Optional)
4-20 mA (3-Wire)
RS-485 Modbus RTU
GEN II 900 MHz or GEN II 2.4 GHz
Two Dry Contact Relays with Replaceable 4 Amp Fuses
.
Mechanical Specifications
Enclosure Materials
Sensor Housing Materials
Product Dimensions
Product Weight
Aluminum Device Enclosure
303 Stainless Steel Sensor Housing
5.5” T x 6” W x 7” H (8” W x 17” H Maximum w/ Antenna Fitting and Antenna)
6 lbs.
Safety Approvals
Enclosure Ratings
Explosion/Flame-Proof
Hazardous Location Certification
Class I, Division 1, Groups C and D, T6
Ex d IIB T6
Zone 1, AEx d IIB T6
Tamb -40⁰C to +54⁰C
2
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT OVERVIEW
1.3 SYSTEM DIAGRAMS
Refer to the following diagrams for identification of the external and internal system components that may be referred
to in this manual.
1.3.1
EXTERNAL SYSTEM DIAGRAM
1 MENU Button
2 Front Panel Thumbscrew
3 Enclosure
4 Explosion Proof Plug
5 SUB Button
6 Mounting Hole
7 HIGH Alarm LED
8 Sensor Housing Assembly
9 Sensor Rain Guard
10 Otis Magnetic Tool
11 LOW Alarm LED
12 ADD Button
13 Enclosure Lid Locking Screw
14 Display Screen
15 Optional Antenna Fitting
(Replaces Item 4)
16 Optional Antenna
17 Enclosure Lid
18 Calibration Kit (Sold Separately)
⑰
⑱
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
3
PRODUCT OVERVIEW
1.3.2
1
2
3
4
5
6
7
8
4
INTERNAL SYSTEM DIAGRAM
RS-485 Modbus Terminal Block
Fault Terminal Block
Power Input/4-20mA Output Terminal Block
Radio Module (If equipped)
Sensor Housing Socket
Antenna Fitting Connector (If equipped with a radio module)
Relay 1 Terminal Block (If equipped with relays)
Relay 2 Terminal Block (If equipped with relays)
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT OVERVIEW
1.3.3
1
2
3
4
5
6
7
8
9
10
11
12
13
ASSEMBLY DIAGRAM
Enclosure Lid
Internal System
Antenna Fitting Plug (If equipped with a radio module)
Enclosure Body
Antenna Fitting (If equipped with a radio module) or #7 (If not equipped with a radio module)
900 MHz or 2.4 GHz Antenna (If equipped with a radio module)
Explosion Proof Plug (If not equipped with a radio module)
Sensor Housing Base
Sensor Element
Sensor Rain Guard
Sensor Housing Cap with Flame Arrestor
Analog Sensor Board
Sensor Housing Plug
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
5
INSTALLATION AND STARTUP
2 INSTALLATION AND START-UP
2.1 PRODUCT PLACEMENT
The installation instructions, and any other information supplied by Otis, provide only basic guidelines relating to the
properties of toxic gas and the effects of environmental conditions on the OI-6000 device. Sensor placement should
be determined in consultation with the site safety personnel, as well as those knowledgeable of: (1) the site/facility
where the equipment is being installed and (2) the potentially present gas types and their dispersion. Otis strongly
recommends that the end-user consults with the appropriate third party Health, Safety and Environmental (HSE) and
Industrial Hygiene (IH) professionals to determine the final quantity and placement of your gas detection devices.
The primary purpose of the OI-6000 is to provide an early warning of the accumulation of hazardous gas, in order to
minimize hazards to people and property. Proper placement of the device is paramount to achieving this goal.
The following general guidelines should be considered when determining the placement of the OI-6000:
 The unit shall be placed such that the position of the sensor housing is pointing downward to the ground.
 Avoid installing the unit in a location where airborne particles could cover or coat the sensor head.
 The unit should be placed in an area that will produce the highest gas concentration. Enclosed corners and
stopping points of moving devices are two areas susceptible to a buildup of hazardous gas.
 In order to provide an accurate representative sample of a room, care should be taken to avoid locating the
unit near a room entrance, fresh air intake vent, or vehicle/generator exhaust point.
 The unit should be placed as close as physically possible to the source of the potential hazardous gas leak.
 In consideration of possible ignition points, the unit should be placed between the potential leak source and
ignition point.
 Consider placing the unit in a seldom used area, such as a warehouse, storage area, or other unfrequented
location.
 Consider accessibility for regular calibration and other required maintenance.
 When monitoring a ventilated gas cylinder storage area, the unit should be placed near the air return vent.
 When monitoring an outdoor or open-air area, the unit should be placed near the air intake of the HVAC
system of the building.
 When monitoring for the potential presence of multiple hazardous gas types, the unit should be calibrated for
the least cross-sensitive hazardous gas.
NOTICE
These guidelines are ONLY intended as a general directive for the placement of the OI-6000. This information
should NOT serve as a complete list when considering all potential parameters for the proper location of the unit.
It is STRONGLY advised that a third party Certified Industrial Hygienist, or other Certified Safety Professional,
conduct a site survey and annotate the location and quantity of detection devices that should be installed for
EVERY installation of EVERY site.
6
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
2.2 PRODUCT MOUNTING
It is recommended to mount the unit to a solid structure (such as a concrete wall, steel column, or angle iron) where
a minimum of vibration will be transmitted to the unit. Alternately, a pole may be used along with a strap or a U-bolt,
as long as it is rigid and of sufficient strength. Wooden structures are not recommended for mounting, as they trap
moisture (which could affect sensor performance) and their mounting rigidity degrades over time (screws/bolts
weaken and fall out or corrode).
Any style of bolt or screw may be used as long as it is steel and meets or exceeds the following:




Maximum ¼"-20 bolt or ؼ" screw (length varies with user need)
Flat washers for bolts/nuts/screws
Minimum Grade 5 (or better)
Corrosion protection for all hardware (paint, galvanize, zinc plating, etc.)
2.3 WIRING CONFIGURATIONS
The OI-6000 has several basic wiring configurations, dependent upon the desired usage and functionality intended
by the end-user. All OI-6000 units require +12 to +35 Volts of wired DC power to operate. Data communication from
the device, through either the 4-20 output or the RS-485 Modbus connection, to an external location are optional.
Consult the subsequent sections of wiring instructions for pertinent information and guidelines pertaining to the
installation of your device.
CAUTION




VERIFY that the power source is disabled before beginning the following wiring steps or performing any
maintenance inside the device enclosure.
The internal components can be static sensitive. Use caution when opening the enclosure and handling
internal components.
DO NOT use any metal objects or tools to remove the terminal board from the internal system.
VERIFY that the label and color combination of the control board terminal exactly matches the
corresponding label and color combination of the power terminal.
WARNING

When securing the lid onto the device, tighten the enclosure lid by hand ONLY. Overtightening of the lid by
use of hand-tools could result in damage to the O-ring, potentially compromising the moisture seal, resulting
in an unsafe environment.
OI-6000 Terminal Block Wire Gauges
Terminal Block
Wire Gauge
Power Terminal
Min: 26 AWG
Relay 1 & 2 Terminal Max: 14 AWG
Modbus Terminal
Min: 26 AWG
Fault Terminal
Max: 16 AWG
AWG: American Wire Gauge
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
7
INSTALLATION AND STARTUP
2.3.1
OPENING THE ENCLOSURE
To prepare the OI-6000 for installation, you must first open the device, exposing the control board and its
components for wiring.
1. Remove the enclosure lid, unscrewing it from the device enclosure. Set aside.
2. Gripping the front panel thumbscrews, lift the internal system out of the enclosure and rest it against
the rim of the enclosure opening.
3. Locate the power cord grip on the top edge of the enclosure.
NOTICE
Disconnecting the sensor connector plug from the sensor housing will allow for the complete removal
of the internal system from the device enclosure. Disconnecting the internal system may provide ease
in accessing the control board terminals for wiring. If this step is performed, it is essential that all
connections are rejoined before returning the internal system back into the enclosure.
2.3.2
CONNECTING POWER
To provide power to the OI-6000, you will need to connect the power cable from the sensor terminal block
on an Otis monitor, or alternate user supplied power source, to the OI-6000 power terminal block located
on the back of the control board. Refer to the following instructions for how to wire your device:
On the GEN II Model OI-6000 Detector:
1. Feed the power wires through the power hub and into the enclosure.
2. Locate the power terminal block on the control board and complete the following:
a. Connect the power (WHITE) wire to the “+12 to +35 VDC” terminal.
b. Connect the ground (BLACK) wire to the “GND” terminal.
On the Otis Monitor:
1. Open the enclosure lid.
2. Using your thumb and forefinger, loosen the front panel thumbscrews that secure the internal system
into the enclosure.
3. Open the internal system, exposing the internal hardware.
4. Feed the power wires through a cord grip and into the enclosure.
8
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
5. Locate the sensor terminal block on the control board and complete the following:
a. Connect the power (WHITE) wire to the “+12 to +35 VDC” terminal.
b. Connect the ground (BLACK) wire to the “GND” terminal.
OTIS MONITOR
SENSOR TERMINALS
+12 to +35 VDC WHITE
GND
BLACK
4-20 mA
OI-6000
POWER TERMINALS
+12 to +35 VDC WHITE
GND
BLACK
4-20 mA
NOTICE
Wiring power to the device is the ONLY requirement for the OI-6000 to operate. With the provision of
power, the unit will function normally, indicating the presence of toxic gas at the sensor and providing
the gas level reading on the display screen. To utilize the added functionality of the device, additional
wiring is necessary. If an Otis Monitor is not used, the OI-6000 can be powered from any +12 to +35
VDC power supply that is capable of supplying at least 250 mA.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
9
INSTALLATION AND STARTUP
2.3.3
CONNECTING 4-20 mA OUTPUT
To utilize the 4-20 mA wired data output feature of the OI-6000, you will need to connect the signal cable
from your Otis Monitor sensor terminal block to the OI-6000 power terminal block located on the control
board. Refer to the following instructions for how to wire your device:
On the GEN II Model OI-6000 Detector:
1. Feed the signal wire through the power hub and into the enclosure.
NOTICE
The power and signal wires may be conjoined as a 3-wire cable, incorporating the power (WHITE),
ground (BLACK), and signal (GREEN) wires all into one jacketed cable.
2. Locate the power terminal block on the control board and complete the following:
a. Connect the signal (GREEN) wire to the “4-20 mA” terminal.
On the Otis Monitor:
1. Feed the signal wire through the power hub and into the enclosure.
2. Locate the sensor terminal block on the control board and complete the following:
a. Connect the signal (GREEN) wire to the “4-20 mA” terminal.
10
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
OTIS MONITOR
SENSOR TERMINAL
+12 to +35 VDC WHITE
OI-6000
POWER TERMINAL
+12 to +35 VDC WHITE
GND
4-20 mA
GND
4-20 mA
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
BLACK
GREEN
BLACK
GREEN
11
INSTALLATION AND STARTUP
2.3.4
CONNECTING RS-485
The OI-6000 supports Modbus RTU over a RS-485 link. To integrate your device with RS-485 Modbus
data communications, you will need to connect the Modbus cable from your Otis Monitor RS-485 input
terminal block to the OI-6000 RS-485 output terminal block located on the control board of the unit. Refer
to the following instructions for how to wire your device:
On the GEN II Model OI-6000 Detector:
1. Feed the RS-485 cable through the power hub and into the enclosure.
2. Locate the RS-485 output terminal block on the control board and complete the following:
a. Connect the RS-485 B (BROWN) wire to the “B” terminal.
b. Connect the ground (WHITE) wire to the “GND” terminal.
c. Connect the RS-485 A (YELLOW) wire to the “A” terminal.
On the Otis Monitor:
1. Feed the RS-485 cable through the power hub and into the enclosure.
2. Locate the RS-485 input terminal block on the control board and complete the following:
a. Connect the RS-485 B (BROWN) wire to the “B” terminal.
b. Connect the ground (WHITE) wire to the “GND” terminal.
c. Connect the RS-485 A (YELLOW) wire to the “A” terminal.
12
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
OTIS MONITOR
RS-485 TERMINAL
A
YELLOW
OI-6000
RS-485 TERMINAL
A
YELLOW
GND
B
GND
B
WHITE
BROWN
WHITE
BROWN
NOTICE
If an Otis Monitor is not used, the OI-6000 can be connected to a Programmable Logic Controller
(PLC) for RS-485 Modbus data communications. For integration and setup, refer to the Modbus
Register Map found in Appendix C of this manual.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
13
INSTALLATION AND STARTUP
2.3.5
CONNECTING RELAYS/ALARMS
The OI-6000 relays are commonly used to power and control external alarming devices, such as alarm
lights (visual) and horns (audio). Refer to the following instructions for how to wire your device. If you do
not have relays in your OI-6000 skip to section 2.3.6 CONNECTING THE FAULT TERMINAL.
NOTICE
Relays are protected by replaceable 4 Amp fuses.
The two protective fuses must only be replaced with OI-FUSE-4A-250.
2.3.5.1 CONNECTING RELAY 1
On the OI-6000 Detector:
1. Locate the power terminal block on the control board and complete the following:
a. Connect a second power (BLUE) wire to the “+12 to +35 VDC” terminal.
2. Locate the Relay 1 terminal block on the radio/relay board and complete the following:
a. Connect the power (BLUE) wire from the “+12 to +35 VDC” terminal to the “COM” terminal.
14
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
OI-6000
POWER TERMINAL
+12 to +35 VDC
BLUE
GND
4-20 mA
OI-6000
RELAY 1 TERMINAL
NC
NO
COM
BLUE
NOTICE
It is recommended that the relay connections are wired as normally-open (NO). However, normallyclosed (NC) wiring configurations provide an inherent fail-safe and may be preferred.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
15
INSTALLATION AND STARTUP
2.3.5.1.1 CONNECTING NORMALLY-OPEN (NO) RELAYS
On the external alarming device (light/horn):
1. Locate the power (RED) and ground (BLACK) wires on the alarming device.
On the GEN II Model OI-6000 Detector:
1. Feed the alarming device wires through the power hub and into the enclosure.
2. Locate the Relay 1 terminal block on the radio/relay board and complete the following:
a. Connect the external alarm device power (RED) wire to the “NO” terminal.
3. Locate the power terminal block on the control board and complete the following:
a. Connect the external alarm device ground (BLACK) wire to the “GND” terminal.
EXTERNAL
ALARMING DEVICE
PWR
RED
GND
BLACK
16
OI-6000
RELAY 1 TERMINAL
NC
NO
RED
COM
OI-6000
POWER TERMINAL
+12 to +35 VDC
GND
BLACK
4-20 mA
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
2.3.5.1.2
CONNECTING NORMALLY-CLOSED (NC) RELAYS
On the external alarming device (light/horn):
1. Locate the power (RED) and ground (BLACK) wires on the alarming device.
On the GEN II Model OI-6000 Detector:
1. Feed the alarming device wires through the power hub and into the enclosure
2. Locate the Relay 1 terminal block on the radio/relay board and complete the following:
a. Connect the external alarm device power (RED) wire to the “NC” terminal.
3. Locate the power terminal block on the control board and complete the following:
a. Connect the external alarm device ground (BLACK) wire to the “GND” terminal.
EXTERNAL
ALARMING DEVICE
PWR
RED
GND
BLACK
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OI-6000
RELAY 1 TERMINAL
NC
RED
NO
COM
OI-6000
POWER TERMINAL
+12 to +35 VDC
GND
BLACK
4-20 mA
17
INSTALLATION AND STARTUP
2.3.5.2 CONNECTING RELAY 2
On the GEN II Model OI-6000-IR-152 Detector:
1. Locate the Relay 1 terminal block on the radio/relay board and complete the following:
a. Connect a second power (BLUE) wire to the “COM” terminal.
2. Locate the Relay 2 terminal block on the radio/relay board and complete the following:
a. Connect the power (BLUE) wire from the “COM” terminal of Relay 1 to the “COM” terminal.
18
OI-6000-IR-152
RELAY 1 TERMINAL
NC
OI-6000-IR-152
RELAY 2 TERMINAL
NC
NO
COM
NO
COM
BLUE
BLUE
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
2.3.5.2.1
CONNECTING NORMALLY-OPEN (NO) RELAYS
On the external alarming device (light/horn):
1. Locate the power (RED) and ground (BLACK) wires on the alarming device.
On the GEN II Model OI-6000 Detector:
1. Feed the alarming device wires through the power hub and into the enclosure.
2. Locate the Relay 2 terminal block on the radio/relay board and complete the following:
a. Connect the external alarm device power (RED) wire to the “NO” terminal.
3. Locate the power terminal block on the control board and complete the following:
a. Connect the external alarm device ground (BLACK) wire to the “GND” terminal.
EXTERNAL
ALARMING DEVICE
PWR
RED
GND
BLACK
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OI-6000-IR-152
RELAY 2 TERMINAL
NC
NO
RED
COM
OI-6000-IR-152
POWER TERMINAL
+12 to +35 VDC
GND
BLACK
4-20 mA
19
INSTALLATION AND STARTUP
2.3.5.2.2
CONNECTING NORMALLY-CLOSED (NC) RELAYS
On the external alarming device (light/horn):
1. Locate the power (RED) and ground (BLACK) wires on the alarming device.
On the GEN II Model OI-6000-IR-152 Detector:
1. Feed the alarming device wires through the power hub and into the enclosure.
2. Locate the Relay 2 terminal block on the radio/relay board and complete the following:
a. Connect the external alarm device power (RED) wire to the “NC” terminal.
3. Locate the power terminal block on the control board and complete the following:
a. Connect the external alarm device ground (BLACK) wire to the “GND” terminal.
EXTERNAL
ALARMING DEVICE
PWR
RED
GND
BLACK
20
OI-6000-IR-152
RELAY 2 TERMINAL
NC
RED
NO
COM
OI-6000-IR-152
POWER TERMINAL
+12 to +35 VDC
GND
BLACK
4-20 mA
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
2.3.6
CONNECTING THE FAULT TERMINAL
The fault terminal is used to provide indication of a device failure. The fault terminal is a normally-closed
(NC), or fail-safe, configuration, terminating power to the external fault device when prompted. Unlike
the optional relay terminals, the fault terminal is a wet-contact, requiring only the power and ground wires
of the external fault device to be wired during installation. Refer to the following instructions for how to
wire your device:
On the external fault device (light/horn):
1. Locate the power (RED) and ground (BLACK) wires on the alarming device.
On the GEN II Model OI-6000 Detector:
1. Feed the alarming device wires through the power hub and into the enclosure.
2. Locate the fault terminal block on the control board and complete the following:
a. Connect the external fault device power (RED) wire to the “+” terminal.
b. Connect the external fault device ground (BLACK) wire to the “-” terminal.
EXTERNAL
FAULT DEVICE
PWR/+
RED
GND/- BLACK
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OI-6000
FAULT TERMINAL
+
RED
BLACK
21
INSTALLATION AND STARTUP
2.3.7 CLOSING THE ENCLOSURE
1. Place the internal system back into the device enclosure, matching each mounting post to its
corresponding eyelet anchored within the base of the enclosure.
2. Using the thumbscrews, gently push to seat the internal system into the mounting posts.
NOTICE
The thumbscrews on the OI-6000 function ONLY as thumb-holds for ease in removal of the internal
system from the base of the enclosure. Do NOT attempt to loosen or tighten the thumbscrews when
opening or closing the enclosure.
3. Verify that the sealing ring, seated at the threaded opening of the device enclosure, is correctly in
place.
4. Affix the enclosure lid back onto the device, rotating the lid until it is tightly screwed into place.
2.4 SYSTEM START-UP
After the enclosure is closed and power is applied, the unit will start automatically and begin its 1-minute warmup
period. During warmup, the display will show a countdown of the time remaining until the system start-up is complete.
The Otis logo and the unit information will also show on the display screen during start-up.
At the end of the countdown, the device will be in normal operating mode.
22
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
INSTALLATION AND STARTUP
2.5 NORMAL OPERATING MODE
During normal operating mode, the OI-6000 continuously samples the air and updates the measured concentration
of the target gas on the display screen. The display, when in normal operation, appears as shown below.
④
1
2
3
4
Measured gas concentration (reading)
Gas concentration unit of measure
Sensor element gas type
Readings above full scale show as MAX and the 4-20 output is set to 25 mA
In the event of a device failure, the unit will alternate between the normal operating screen and a fault screen on the
display, in 5 second intervals, until the fault has been cleared, or is corrected. The fault code, located in the bottomleft corner of the display, appears on both screens. The unit continuously registers that the system is in fault, so that
even with at-a-glance instrument checks in the field, it can be seen. When the fault is corrected, the unit will return
to normal operating mode.
For a list of the fault codes and warning symbols of the OI-6000, and their associated meaning, refer to the Product
Troubleshooting section of this manual.
Both system menus are accessible from the normal operating mode. To access the product settings and
configuration menu, press and hold the MENU button, for approximately 6 seconds, until the menu is activated and
open on the display screen. To access the operation settings menu from the normal operating screen, press the
MENU button once and the menu will open and show on the display.
NOTICE
After 5 minutes of no interaction with the device, the unit will automatically return to normal operating mode.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
23
PRODUCT SETTINGS AND CONFIGURATION
3 PRODUCT SETTINGS AND CONFIGURATION
The product settings and configuration menu allows the end-user to tailor the device settings to meet their required
specifications and/or site conditions.
The product settings and configuration menu consists of the following screens:
Relay Test
Network ID
System Information
Null/Calibration Timers
Unit Info
Background Setting
Relay 1: Latching/Non-Latching Setting
Relay 2: Latching/Non-Latching Setting
Relay 1: Fail-Safe Setting
Relay 2: Fail-Safe Setting
Calibration Method
RS-485 Modbus Address Setting
RS-485 Modbus Baud Setting
4-20 mA Offset Settings
o Zero Offset Setting
o Full-Scale Offset Setting
 Display Screen Contrast Setting
 Return to Factory Default Settings














While the device is in normal operating mode, press and hold the MENU button, for approximately 6 seconds, until the
product settings and configuration menu is activated and open on the display screen.
3.1 RELAY TEST
The relay test simulates a gas level reading, indicating the presence of a toxic gas at the sensor. The relay test is
used to ensure the proper functionality of the relay settings on the monitor. The test can also be used to simulate
emergency/safety drills onsite.
NOTICE
The triggering of relays from the detector will also simulate low and high level alarm relays at the monitor. Monitors
cannot distinguish between real and simulated data received. When the monitor relays are triggered, alarming
devices will perform as intended, initiating emergency procedures as if a harmful or toxic gas was actually present.
To prevent this from occurring, set the monitor to calibration mode before performing the relay test. Calibration
mode of the monitor will allow the transmission of the data, without the activation of the monitor relays. Consult
the Sensor Calibration section of this manual for instructions on how to perform this procedure.
It is recommended that a relay test be conducted EVERY 30 days, alongside the maintenance and calibration of the
detector.
24
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.1.1 PERFORMING THE RELAY TEST
The relay test gas level reading can be increased or decreased in increments of 5% of the sensor scale,
up to 100% of the sensor scale.
1. Press the ADD button until the low and high alarm levels are reached and the relay(s) are triggered
to light all visual alarm(s) and sound all audio alarm(s) on the monitor.
2. Once all relays have been tested and the test is complete, press the SUB button to return the relay
test reading back to zero and to deactivate the monitor alarm(s).
3. Press the MENU button to advance to the System Information screen.
3.2 NETWORK ID
The Network ID is used to synchronize the communication between the Otis Monitor and Sensor Assembly:
 There are 52 networks available with the GEN II 900 MHz radio.
 There are 78 networks available with the GEN II 2.4 GHz radio.
 The monitor and sensor assembly must have the same Network ID in order to communicate.
1. Press the ADD or SUB button until the Network ID matches the value being used on the Primary
Monitor.
2. Press the MENU button to advance to the System Information screen.
NOTICE
This page will not appear if no radio module is installed. Please skip to section 3.3 SYSTEM INFORMATION.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
25
PRODUCT SETTINGS AND CONFIGURATION
3.3 SYSTEM INFORMATION
The system information screen allows the end-user to view the following information:





The status of the radio link (Only present if radio module is installed)
The scale of the sensor element.
The supply voltage of the sensor unit.
The voltage value the sensor was reading when nulled in Volts.
The current voltage value the sensor element is reading in Volts.
This screen is for informational purposes only.
1. Press the MENU button to advance to the Null/Calibration Time Information screen.
3.4 NULL/CALIBRATION TIMER INFORMATION
The null/calibration time information screen allows the end-user to view the following information:
 The days since the sensor assembly was last nulled, only updates while the unit is turned on.
 The days since the sensor assembly was last calibrated, only updates while the unit is turned on.
 The calibration number of the sensor, used for diagnostic purposes.
This screen is for informational purposes only.
1. Press the MENU button to advance to the Unit Information screen.
26
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.5 UNIT INFORMATION
The unit information screen allows the end-user to view the following information:
 The number of missed radio transmissions to the monitor (Only present if radio module installed)
 The date of manufacture of the sensor assembly.
 The serial number of the sensor assembly.
This screen is for informational purposes only.
1. Press the MENU button to advance to the Background setting screen.
3.6 BACKGROUND SETTING
The background setting is the gas reading at which the radio transmission changes from once every minute to once
every five seconds. The background setting is adjustable so that if there is a consistent level of gas always present
the sensor will not increase the radio transmission rate.
 The default background level is 4% of the sensor element scale.
 The minimum that the background can be set to is 1% of the sensor element scale.
 The maximum that the background can be set to is 10% of the sensor element scale.
1. Press the ADD or SUB button until the Background is set to the desired level.
2. Press the MENU button to advance to the Relay 1 latching/non-latching setting screen.
NOTICE
This page will not appear if no radio module is installed. Please skip to section 3.7.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
27
PRODUCT SETTINGS AND CONFIGURATION
3.7 LATCHING AND NON-LATCHING RELAY SETTINGS
Relay 1 and Relay 2 can be set to latching or non-latching. Relays set to non-latching will automatically deactivate
when the detected gas level falls below the corresponding alarm setting. Conversely, latching relays, once activated,
MUST be manually reset at the device, regardless of the change in gas detection level readings.
The factory default settings on the OI-6000-IR-152 for Relay 1 and Relay 2 are non-latching. During installation and
setup, Relay 1 and Relay 2 are commonly customized as the following:
Common Relay 1 and Relay 2 Settings
Relay
Alarm Setting
Latching/Non-Latching
Relay 1
Low
Non-Latching
Relay 2
High
Latching
3.7.1
RELAY 1: LATCHING/NON-LATCHING SETTING
1. Use the ADD and SUB buttons to toggle between the “UnLatch” and “Latch” options.
2. Press the MENU button to select the desired setting and to advance to the Relay 2 latching/nonlatching setting screen.
NOTICE



28
For non-latching alarms, the alarms will NOT deactivate until the gas level reading at the sensor
has fallen 10% below the alarm set-point.
For latching alarms, the gas level reading MUST be below the alarm set-point before the alarm
can be deactivated.
The alarms will NOT activate, even in the presence of gas, until you have exited the menu mode
for approximately 1 minute.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.7.2
RELAY 2: LATCHING/NON-LATCHING SETTING
1. Use the ADD and SUB buttons to toggle between the “UnLatch” and “Latch” options.
2. Press the MENU button to select the desired setting and to advance to the Relay 1 fail-safe setting
screen.
3.8 RELAY FAIL-SAFE SETTING
From a safety perspective, any unknown situation must be considered potentially hazardous. When a stand-alone
gas detector is unable to detect gas, an unknown condition is created and precautions must be taken to prevent
personal injury or loss of life. This mean that the device must be able to alert the end-user that it is no longer fully
operational. This safety function is made possible by the fault terminal. For more information about the fault terminal
and for instructions on how to wire your device, refer to the Connecting the Fault Terminal section of this manual.
Site specific circumstances may prevent the use of the fault terminal, leading to potentially dangerous situations
without end-user notification. In response, the OI-6000 provides a relay fail-safe setting to enhance the safety
protection provided when the fault terminal cannot be used.
The relay fail-safe setting reverses the behavior of the relays and allows a deactivated relay to serve as a warning
of a potentially hazardous event. In fail-safe mode, the relays are activated upon device start-up and deactivated
during alarm conditions and when the device is turned off. Some device failures, such as loss of power and firmware
corruption, will also deactivate the relay.
NOTICE
For maximum safety, the fault terminal MUST be used. A fail-safe relay will NOT notify the user of all potential
device failures. The fail-safe setting should ONLY be enabled to provide enhanced safety protection when the
fault terminal CANNOT be used.
The factory default settings on the OI-6000 for Relay 1 and Relay 2 fail-safe are No (Off).
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
29
PRODUCT SETTINGS AND CONFIGURATION
If the fault terminal cannot be used, Otis Instruments recommends one of the following configurations:
Recommended Configurations for Relay Fail-Safe Setting
Power Source
Relay Wiring
Fail-Safe Outcome
OI-6000
Normally-Closed (NC) No (Off) Normal Operation: Closed
Alarm Activation: Open
OI-6000
Normally-Open (NO) Yes (On) Normal Operation: Closed
Alarm Activation: Open
External Power Supply Normally-Closed (NC) Yes (On) Normal Operation: Open
Alarm Activation: Closed
External Power Supply Normally-Open (NO) Yes (On) Normal Operation: Closed
Alarm Activation: Closed
3.8.1 RELAY 1: FAIL-SAFE SETTING
1. Use the ADD and SUB buttons to select the desired fail-safe setting for Relay 1. Select “Yes” to turn
the fail-safe setting on, or select “No” to leave the fail-safe setting off.
2. Press the MENU button to select the desired setting and to advance to the Relay 2 fail-safe setting
screen.
3.8.2 RELAY 2: FAIL-SAFE SETTING
1. Use the ADD and SUB buttons to select the desired fail-safe setting for Relay 2. Select “Yes” to turn
the fail-safe setting on, or select “No” to leave the fail-safe setting off.
2. Press the MENU button to select the desired setting and to advance to the Calibration Method setting
screen.
30
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.9 CALIBRATION METHOD
The calibration method selection allows you to choose how you calibrate the sensor element. Manual calibration is
the default method for all gas types.
 Manual calibration lets you use the ADD and SUB buttons during calibration to match the reading shown
on the screen to the value of the gas being applied.
 Auto calibration will set the reading, after a predetermined amount of time, during calibration to the value
entered during the auto calibration setup process.
1. Use the ADD button to select manual calibration and the SUB button to select auto calibration.
2. Press the MENU button to advance to the Modbus Address Setting screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
31
PRODUCT SETTINGS AND CONFIGURATION
3.10 MODBUS ADDRESS SETTING
Modbus is the leading industrial open control protocol. Modbus is available in several different types, depending
upon the media over which it is transmitted. Like most communication protocols, Modbus uses a client/server type
behavior. The client sends a request for information to the server. The server decodes the request and sends a
signal response with the requested data or acknowledgement back to the client.
A Modbus message includes a Modbus address, commonly referred to as a unit ID. The Modbus address is used
to identify the server address in RS-485 networks. Each server is assigned an address and listens for messages
which contain this number in the Modbus address field.
The OI-6000 uses the original Modbus RTU over the RS-485 link. RS-485 Modbus has 255 addresses, ranging from
1 to 255. Eight of the addresses are used for internal system settings, leaving addresses 1 to 247 available for your
device.
The RS-485 Modbus communication parameters used in Otis devices is 8 data bits, no parity, and 1 stop bit; these
parameters are fixed and cannot be changed. The floating point data values are presented with the least significant
bytes first.
When using Modbus over a RS-485 network, the communication parameters MUST be set correctly for all devices.
For multiple devices using Modbus, ensure that no two units are assigned the same address. A duplication of
addresses could cause errors in the transmission of data. Modbus addresses can be assigned sequentially or
another appropriate address scheme for the specific network setup.
The factory default setting on the OI-6000 for the Modbus address setting is 1.
1. Use the ADD and SUB buttons to increase and decrease the Modbus address number, respectively.
2. Press the MENU button to select the desired setting and to advance to the Modbus baud setting screen.
32
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.11 MODBUS BAUD SETTING
The baud rate is the speed of data transmitted within the Modbus system, measured in bits per second (bps). For
successful communication, the baud rate setting of the OI-6000 MUST match the baud rate setting on the attached
Otis Monitor, or other Modbus device.
All Otis devices have factory default Modbus baud settings of 9600 bps. The RS-485 Modbus communication
parameters used in all Otis devices are 8 data bits, no parity bit, and 1 stop bit (8-N-1) these parameters are fixed
and cannot be changed. Some devices come with different Modbus baud rates. Check with your system
administrator to determine if a different Modbus baud setting is needed for your system.
The pre-set Modbus baud setting available for the OI-6000 are the following:







110 bps
300 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
1. Use the ADD and SUB buttons to scroll through the available Modbus baud options.
2. Press the MENU button to select the desired setting and to advance to the 4-20 mA offset settings screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
33
PRODUCT SETTINGS AND CONFIGURATION
3.12 4-20 mA OFFSET SETTINGS
Setting the 4-20 mA offset allows the end-user to calibrate the sensor’s analog output. Upon installation of the
device, if the detected gas reading on OI-6000 does not correspond to the reading on the Otis Monitor, or other
monitoring device, the zero offset (4 mA) and the full-scale offset (20 mA) can be adjusted on the unit.
Overtime, as electronic components suffer from normal wear and tear, the circuits will tend to drift. This drift can
cause variances in the amount of current output by the sensor, or in the current measurement by the monitor. If at
any time the reading on the OI-6000 no longer matches the reading on the monitoring device, the 4-20 mA offset will
need to be recalibrated.
The factory default settings on the OI-6000 for the 4-20 mA offset are 4.00 mA for the zero offset and 20.00 mA for
the full-scale offset.
1. Press the ADD button to select “Yes” to set the 4-20 mA offset and to advance to the zero offset setting screen.
If you do not wish to set the 4-20 mA offset, press the SUB button to select “No” to advance to the display screen
contrast setting screen.
3.12.1 ZERO OFFSET SETTING
If “Yes” Is selected to set the 4-20 mA offset:
1. Use the ADD and SUB buttons to increase and decrease the zero offset on the unit, respectively,
until the Otis Monitor reads 0 %/PPM, depending on the gas type being detected.
2. Press the MENU button to save the desired setting and to advance to the full-scale offset setting
screen.
34
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
3.12.2 FULL-SCALE OFFSET SETTING
1. Use the ADD and SUB buttons to increase and decrease the full-scale offset, respectively, until the
Otis Monitor reads the full scale value for that channel.
2. Press the MENU button to save the desired setting and to advance to the display screen contrast
setting screen.
3.13 DISPLAY SCREEN CONTRAST SETTING
The display screen contrast is the difference in luminance or color that makes the displayed images distinguishable.
Due to varying external elements, such as extreme sunlight, the brightness of the display screen may need to be
adjusted for optimum viewing.
The factory default setting on the OI-6000 for the display screen contrast is 29, approximately 45% of the contrast
scale. The contrast setting ranges from 1 to 64.
NOTICE
Setting the contrast too low will cause the display image to become faint or indistinguishable, especially when the
unit is located in areas with full-sun. The resulting field of view could be misinterpreted as an error within the
device. Be sure to verify that the selected contract is within an appropriate range of viewing.
3. Use the ADD and SUB buttons to brighten and dim the contrast, respectively.
4. Press the MENU button to select the desired setting and to advance to the return to factory default settings
screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
35
PRODUCT SETTINGS AND CONFIGURATION
3.14 RETURN TO FACTORY DEFAULT SETTINGS
Returning the OI-6000 to its factory default settings will reset all customization of the device, including the null and
calibration settings of the sensor element.
OI-6000 Product and Configuration Factory Default Settings
Configuration
Setting
Relay Test
-Network ID
5
System Information
-Null/Calibration Timer
*Cleared*
Unit Information
-Background Setting
4
Relay 1: Latching/Non-Latching
UnLatch
Relay 2: Latching/Non-Latching
UnLatch
Relay 1: Fail-Safe Setting
No (Off)
Relay 2: Fail-Safe Setting
No (Off)
Calibration Method
Manual
RS-485 Modbus Address Setting
1
RS-485 Modbus Baud Setting
9600 bps
4-20 mA Zero Offset Setting
4.00 mA
4-20 mA Full-Scale Offset Setting
20.00 mA
Contrast
-OI-6000 Operation Factory Default Settings
Configuration
Sensor Element Null
Sensor Element Calibration
Sensor Assembly Low Alarm Setting
Sensor Assembly Low Alarm Rise/Fall Setting
Sensor Assembly High Alarm Setting
Sensor Assembly High Alarm Rise/Fall Setting
36
Setting
*Cleared*
*Cleared*
10% of Sensor Scale
Rise
15% of Sensor Scale
Rise
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
PRODUCT SETTINGS AND CONFIGURATION
1. Press the ADD button to select “Yes” to return the device to its factory default settings and to advance to the
return to factory default settings confirmation screen. If you do not wish to return the device to its factory default
settings, press the SUB button to select “No” to leave the product settings and configuration menu and to return
the device to normal operating mode.
If “Yes” is selected to return the device to its factory default settings:
1. Press the ADD button to select “Yes” to confirm that you want to reset the device to its factory default settings and
to return the device to normal operating mode. If you do not wish to continue to return the device to its factory default
settings, press the SUB button to select “No” to leave the product settings and configuration menu and to return the
device to normal operating mode.
NOTICE
If the OI-6000 is reset to the factory default settings, the configuration steps MUST be repeated and the device
MUST then be nulled and calibrated for proper operation of the device.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
37
OPERATION SETTINGS
4 OPERATION SETTINGS
At the time of installation, when the power is first applied to the OI-6000, the unit is automatically powered on and begins
the startup sequence. During the 1-minute warmup, the display will show a countdown of the time remaining until the system
start-up is complete. The Otis logo and the unit information will also flash on the display screen and, at the end of the
countdown, the device will be in normal operating mode.
4.1 POWERING THE DEVICE
4.1.1
POWERING OFF
Powering off the device stops the operation of the unit. The product settings and configuration, as well
as the operation settings, including the null and calibration of the sensor, will be unaffected.
1. Press and hold the SUB button for approximately 6 seconds, until “OFF” shows on the display
screen.
The display screen will continue to show “OFF” for the duration of time that the unit is powered off, as
long as long as uninterrupted power is supplied to the unit.
4.1.2
POWERING ON
Powering on the device begins the operation of the unit, automatically initiating the system start-up cycle
and 1-minute warmup period. The OI-6000 will be in normal operating mode at the completion of the
system start-up.
1. Press the ADD button once to turn the unit on.
38
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OPERATION SETTINGS
4.2 SENSOR CALIBRATION
Calibration is the process of evaluating and adjusting the precision and accuracy of measurement equipment.
Although Otis calibrates every device at the factory, for best accuracy, the detector SHOULD be calibrated in the
environment where it is installed.
It is imperative that the calibration occur as part of the installation process, and then EVERY thirty (30) days
thereafter. Days since last calibration should NEVER exceed ninety (90) days. Otis recommends that you calibrate
your device regularly to ensure proper functionality and a safe work environment.
4.2.1
NULLING THE SENSOR (AUTO NULL)
The first step of calibration is nulling the sensor, sometimes referred to as “setting the zero” or “zeroing
the sensor.” The nulling process MUST be performed in known clean air, with no contaminants or
hazardous gasses present. If air quality cannot be guaranteed, a bottle of zero air will be required to
properly null the sensor.
1. While the product is in normal operating mode, press the MENU button to activate the operation
settings menu.
2. Press the ADD button to begin the null process and advance to the clean air confirmation screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
39
OPERATION SETTINGS
3. Press the ADD button to select “Yes” to confirm that the sensor is in clean air and to begin nulling
the sensor. If the sensor is not in clean air, press the SUB button to select “No” to discontinue the
null process and to return to the previous screen.
NOTICE
If “Yes” is selected at this point, the null process cannot be stopped, without disconnecting the power
from the unit.
4. The unit will automatically begin the 6-second null process. During null, the display will show a
countdown of the time remaining until the process is complete.
5. When null process is complete, press the MENU button to advance to the calibration screen.
40
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OPERATION SETTINGS
4.2.2
CALIBRATING THE SENSOR (MANUAL CAL)
You should ONLY perform the calibration of the sensor after the null process has been completed. For
best results, use 50% of the sensor scale of your target gas in an air balance with a flow rate of 0.25 to
0.5 LPM. The screen below will appear upon entering calibration mode. If Auto Cal was chosen during
the Product Settings and Configuration section please skip to section 4.2.3.
1. Unscrew and remove the sensor housing cap from the assembly.
2. Affix a Calibration Adapter Kit (sold separately) to the sensor housing of the device.
3. Affix a regulator to the calibration gas bottle.
4. Attach the tubing on the Calibration Adapter Kit to the regulator on the calibration gas bottle.
5. Ensure that the gas is flowing and watch the reading increase. When the reading stabilizes,
approximately 1 minute, use the ADD and SUB buttons to adjust the reading on the screen to match
the applied calibration gas concentration.
NOTICE
If the sensor responds extremely slow, or does not respond to the applied gas, it may indicate a failed
sensor element. The sensor element will need to be replaced before completing the null and calibration
process.
6. When calibration is complete, detach the Calibration Adapter Kit from the sensor housing and reaffix
the sensor housing cap. Press the MENU button to advance to the Low Alarm Setting screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
41
OPERATION SETTINGS
4.2.3
CALIBRATING THE SENSOR (AUTO CAL)
You should ONLY perform the calibration of the sensor after the null process has been completed. For
best results, use 50% of the sensor scale of your target gas in an air balance with a flow rate of 0.25 to
0.5 LPM.
1. Press the ADD button to select “Yes” to begin the calibration process and to advance to the
calibration confirmation screen. If you do not wish to calibrate the sensor, press the SUB button to
select “No” to advance to the sensor radio address setting screen.
2. Press the ADD button to select “Yes” to confirm that you want to calibrate the sensor and to continue
to the concentration setting screen. If you do not wish to continue to calibrate the sensor, press the
SUB button to select “No” to advance to the sensor radio address setting screen.
3. Use the ADD and SUB buttons to adjust the concentration to the calibration gas being used. Press
the MENU button to save the gas concentration setting and to advance to the calibration start screen.
4. Affix a Calibration Adapter Kit (sold separately) to the sensor housing of the device.
5. Affix a regulator to the calibration gas bottle.
42
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OPERATION SETTINGS
6. Attach the tubing on the Calibration Adapter Kit to the regulator on the calibration gas bottle.
7. Ensure that the gas is flowing and press the MENU button to begin calibrating the sensor, the unit
will automatically begin the calibration process, the amount of time on the timer will vary based on
the gas type. During calibration, the display will show a countdown of the time remaining until the
process is complete.
NOTICE
Once the calibration countdown has started the process cannot be stopped without disconnecting the
power from the unit.
8. When calibration is complete, detach the Calibration Adapter Kit from the sensor housing and reaffix
the sensor housing cap. Press the MENU button to advance to the Low Alarm Setting screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
43
OPERATION SETTINGS
4.3 SENSOR ALARM SETTINGS
The OI-6000 has two alarm settings: LOW alarm and HIGH alarm. Regardless of whether the device includes the
optional two dry-contact relays, the system alarm settings are available on the device. All alarm set-points are field
adjustable up to 60% of the full scale gas concentration. The factory default setting on the OI-6000 for the LOW
alarm is 10% of full scale and 15% of full scale for the HIGH alarm. The LOW alarm set-point should NEVER be
programed to a higher setting than the HIGH alarm set-point.
Both alarms are configurable to activate on either a rising or falling level of gas. Most gas types activate alarms on
rising levels of gas. Oxygen is a special case and by default activates the LOW alarm when the detected gas
concentration FALLS below the LOW alarm set-point and the HIGH alarm when the detected gas concentration
RISES above the HIGH alarm set-point. The factory default setting for all other gas types is to activate when the
detected gas RISES above the alarm set-point.
When the gas concentration detected at the sensor meets or exceeds the LOW alarm set-point, the LOW alarm
indicator LED will illuminate amber. When the gas level meets or exceeds the HIGH alarm set-point, the HIGH alarm
indicator LED will illuminate red. The alarm indicator LEDs will not switch off until the gas level reading at the sensor
has fallen 10% below the alarm set-points or until the alarm is manually reset at the device, dependent upon the
relay latching/non-latching settings.
If the device includes the optional two dry-contact relays, Relay 1 and Relay 2, the LOW and HIGH alarm settings
will control the wired relays, respectively. When external alarming devices, such as alarm lights (visual) and horns
(audio) are wired to the device, as the alarm set-points are reached, the relays will become activated, as they are
wired and programmed to perform.
4.3.1
SENSOR LOW ALARM SETTING
1. Use the ADD and SUB buttons to increase and decrease the LOW alarm set-point, respectively.
2. Press the MENU button to save the desired setting and to advance to the sensor LOW alarm rise/fall
setting screen.
44
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OPERATION SETTINGS
4.3.2
SENSOR LOW ALARM RISE/FALL SETTING
1. Use the ADD and SUB buttons to select between activation on a Rising or a Falling gas level,
respectively.
2. Press the MENU button to save the desired setting and to advance to the sensor HIGH alarm setting
screen.
4.3.3
SENSOR HIGH ALARM SETTING
1. Use the ADD and SUB buttons to increase and decrease the HIGH alarm set-point, respectively.
2. Press the MENU button to save the desired setting and to advance to the sensor HIGH alarm rise/fall
setting screen.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
45
OPERATION SETTINGS
4.3.4
SENSOR HIGH ALARM RISE/FALL SETTING
1. Use the ADD and SUB buttons to select between activation on a Rising or a Falling gas level,
respectively.
2. Press the MENU button to save the desired setting and to advance to setting the radio address (if
you have a radio module installed), otherwise you will return to Normal Operating Mode.
NOTICE


The alarms will NOT activate, even in the presence of gas, until you have exited the menu mode for
approximately 1 minute.
For non-latching alarms, the alarms will NOT deactivate until the gas level reading at the sensor has fallen
10% below the alarm set-point.
4.4 SENSOR RADIO ADDRESS
The OI-6000 radio address is adjustable from 1 to 255, each sensor assembly on the network needs a unique radio
address in order to avoid a fault at the receiving monitor. The default radio address is 1.
1. Use the ADD and SUB buttons to increase and decrease the sensor radio address, respectively.
2. Press the MENU button to save the desired setting and to exit the operation settings menu, and to
return the device to normal operating mode.
46
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OPERATION SETTINGS
4.5 MANUAL RESET FOR ACTIVATED LATCHING ALARMS
Relay alarms set to latching will not deactivate until the alarms are manually reset at the device. This includes LOW
and HIGH alarm indicator LEDs and optional wired relays. When latching alarms have been activated, refer to the
following instructions for how to manually deactivate the alarms on your device:
1. Verify that the gas level reading is below the alarm level setting.
2. Press the MENU button to deactivate latching alarm(s).
NOTICE



The gas level reading MUST be below the alarm level setting before the alarm can be deactivated.
Press the MENU button ONLY once to deactivate the latching alarm(s). Pressing the MENU button more
than once will activate and open the operation settings menu.
The alarms will NOT activate, even in the presence of gas, until you have exited the menu mode for
approximately 1 minute.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
47
APPENDICES
5 PRODUCT MAINTENANCE
5.1 SCHEDULED MAINTENANCE
Otis recommends that our equipment be calibrated a MINIMUM of every 90 days, and STRONGLY advise that
calibration be performed every 30 days. Without knowing the specific application, sensor assembly location, gas
exposure and other factors, the company recommends monthly calibrations – assuming no damage or potential
damage has occurred to the sensor and that there has not been a power outage to the sensor assembly. If damage
has occurred or the power supplied to the sensor has changed a calibration should be completed immediately.
Scheduled maintenance should include the null and calibration of the sensor and a relay test. Consult the Sensor
Calibration and Relay Test sections of this manual for further information and instructions on how to perform these
procedures.
The sensor head should be kept free of airborne particles, dirt, mud, spider webs, bugs and insects, and/or any other
debris that could potentially cover or coat the sensor. Keeping the sensor head clear of foreign articles will allow for
proper operation of the device. A brief inspection during scheduled maintenance should suffice, but dependent upon
the location and the environment in which the unit is installed, more frequent inspections may be warranted.
The OI-6000 may be adversely affected by the exposure to certain airborne substances. Loss of sensitivity or
corrosion may be gradual, if such materials are present in sufficient concentrations. The performance of the device
may be impaired during operation in the presence of substances that can cause corrosion on gold plating. Continuous
and high concentrations of corrosive gases may also have a detrimental long-term effect on the product’s service
life. The presence of such substances in an area does not preclude the use of this device, but the likelihood of the
shortened lifetime of the sensor element, as a result, should be noted. Use of the OI-6000 in these environments
may require more frequently scheduled maintenance to ensure safe and reliable system performance.
48
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
5.2 SENSOR REPLACEMENT
The sensor elements used in the OI-6000 detects gas in either % or PPM concentrations, this element must be fully
functional in order for the system to operate correctly. Otis recommends replacing the sensing element whenever a
slow response to gas is observed during the normal calibration process. After replacing the sensing element the
device MUST then be nulled and calibrated for proper operation of the device.
CAUTION


The internal components can be static sensitive. Use caution when opening the enclosure and handling
internal components.
DO NOT use any metal objects or tools to remove the sensing element from the sensor adapter board.
1. Press and hold the SUB button for approximately 6 seconds, until “OFF” shows on the display
screen.
2. Unscrew and remove the sensor housing cap from the sensor housing base. Set aside.
3. Using the thumb and forefinger gently unplug the sensing element from the sensor housing board.
4. Plug in the new sensing element into the sensor housing board. Ensure that the pins on the sensing
element align with the sockets on the sensor housing board.
5. Screw the sensor housing cap back onto the sensor housing base, ensuring that the sensor housing
cap is only tightened hand tight.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
49
APPENDICES
5.3 PRODUCT TROUBLESHOOTING
OI-6000 Fault Codes
Problem
Cause(s)
F1
1. The control board has lost communication with
the digital sensor interface adapter board.
Check
Sensor
Cable
F4
Check
Sensor
Board
F5
Try to
Null
Again
F6
Try to
Calibrate
Again
1. The control board has lost communication with
the sensor interface board.
F14
Check
Radio
1. The sensor assembly has lost communication
with the Primary Monitor
• Network ID is incorrectly configured.
• Sensor assembly is obstructed/too far from the
Primary Monitor.
• Radio module is not working in the sensor
assembly
1. The unit did not null correctly, due to:
• the presence of gas,
• a sensor error, or
• a sensor interface board error.
1. The unit did not calibrate correctly, due to:
• the absence of gas,
• a sensor error, or
• a sensor interface board error.
Solution(s)
1. Check connection between the sensor
housing connector header and the digital
sensor interface adapter board plug-in.
2. Replace the sensor interface adapter
board
1. Replace the sensor interface board.
1. Re-null the device in clear air.
2. Replace the sensor element.
3. Replace the sensor interface board.
1. Recalibrate the sensor element and verify
that gas is present during calibration.
2. Replace the sensor element.
3. Replace the sensor interface board.
1. Check that the Network ID on the sensor
assembly matched the Primary Monitor
Network ID
2. Move the sensor assembly away from the
obstruction or use a high gain antenna.
3. Replace sensor radio module.
When replacing the sensor element, the detector must be nulled and calibrated.
System faults will activate the fault terminal on the device.
50
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
5.4 PRODUCT REPLACEMENT PARTS AND ACCESSORIES
While not all of the components on the OI-6000 can be field-replaced, there are several parts that are replaceable
by an Otis Approved Service Technician.
To purchase accessories/replacement parts for your device, contact the sales representative of this product for
assistance.
OI-6000-X-X-X-X-O Product Replacement Parts and Accessories
External Replacement Parts
Part Name
Main Enclosure with Lid
Enclosure Lid
Sensor Housing Cap with Flame Arrestor
900 MHz Antenna
2.4 GHz Antenna
Internal Replacement Parts
Part Name
Control board with LCD Screen
Radio/Relay Board with Relays Only
Radio/Relay Board with Radio Components Only
No Radio Module or Relay Components Installed
Radio/Relay Board with Radio and Relay Components
No Radio Module Installed
Radio/Relay Board with GEN II 900 MHz Radio
No Relay Components Installed
Radio/Relay Board with GEN II 2.4 GHz Radio
No Relay Components Installed
Radio/Relay Board with GEN II 900 MHz Radio and Relays
Includes Radio Module
Radio/Relay Board with GEN II 2.4 GHz Radio and Relays
Includes Radio Module
Otis Part Number
OI-4000
OI-495-LID
OI-2000-CAP-ASSY
OI-AN-900-FLEX-R
OI-AN-2.4-RIGID-R
Otis Part Number
OI-6000-CB-PCA
OI-6000-XRB-PCA
OI-6000-RXB-PCA
OI-6000-RRB-PCA
OI-6000-9XB-PCA
OI-6000-2XB-PCA
OI-6000-9RB-PCA
OI-6000-2RB-PCA
GEN II 900 MHz Radio Module
OI-RADIO-900-LAIRD
GEN II 2.4 GHz Radio Module
OI-RADIO-2.4-TH
Infrared Sensor Analog Board
OI-2011-SB-IR
Photo Ionization Detector Sensor Analog Board (Sensor Element Sold Separately)
OI-2014-X*
*Specify PPM Scale When Ordering (10, 20, 50, 1K, or 2K)
Electrochemical Sensor Analog Board (Sensor Element Sold Separately)
**Specify Gas Type When Ordering
Oxygen Sensor Analog Board (Sensor Element Sold Separately)
Catalytic Bead Sensor Analog Board w/ Sensor Element Installed
Product Accessories
Part Name
Otis Magnetic Tool
Filter for Dusty Environments
Replacement Sensor Housing O-Ring
Replacement Main Enclosure O-Ring
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
OI-2015-SB-NEC**
OI-2016-SB-O2
OI-2018-SB-CB2
Otis Part Number
OI-420
OI-2000-CAP-FILTER
OI-2000-ORING
OI-495-O
51
APPENDICES
APPENDICES
APPENDIX A:
APPENDIX B:
APPENDIX C:
APPENDIX D:
APPENDIX E:
APPENDIX F:
52
INTRODUCTION TO 4-20 mA CURRENT LOOP SIGNALS
MODBUS COMMUNICATIONS
MODBUS REGISTER MAP
OTIS INSTRUMENTS PRODUCT WARRANTY STATEMENT
INFORMATION ABOUT RMA SERVICE REPAIRS
INFORMATION ABOUT RMA RETURNS FOR CREDIT
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
APPENDIX A: INTRODUCTION TO 4-20 mA CURRENT LOOP SIGNALS
This appendix is only an introduction. The information should serve as a brief overview of 4-20 mA current loop signal ranges
and should not be considered a complete reference for proper implementation or use.
Industry standards pertaining to 4-20 mA current loop signals and other aspects of electronics are assumed to be known by the
technician. For proper connection to a monitor or Programmable Logic Controller (PLC), refer to the manufacturer’s specific
manual or instructions for that device.
OVERVIEW
When using 4-20 mA wired output signal devices, the 4-20 mA defines the current loop analog signal range, with 4 mA
representing the lowest end of the range and 20 mA the highest. The relationship between the current loop and the gas value
is linear. In addition, Otis devices use values below 4 mA to indicate special status conditions, as shown below:
4-20 mA Ranges
Current
Detector Status
2.5 mA
Sensor Fault
3 mA
Sensor in Menu Mode
3.5 mA Sensor in Calibration Mode
The 4 mA allows the receiving monitor/PLC to distinguish between a zero signal, a broken wire, or an unresponsive instrument.
Benefits of 4-20 mA convention are that it is: an industry standard, low-cost to implement, can reject some forms of electrical
noise, and the signal does not change value around the “loop” (as opposed to voltage). The key advantage of the current loop
is that the accuracy of the signal is not affected by a potential voltage drop in the interconnected wiring. Even with significant
resistance in the line, the current loop transmitter will maintain the proper current for the device, up to its maximum voltage
capability.
Only one current level can be present at any time. Each device that operates via a 4-20 mA current loop signal must be wired
directly to the monitoring device. Units that are wired in a daisy chain configuration for the 4-20 mA current loop signal will not
properly transmit data communications to the monitoring device.
CALCULATIONS
I(4-20) =
Current of loop, measured in mA
value =
ppm (or %) of gas concentration
scale =
full scale of sensor
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
53
APPENDICES
Sensor Element Scale Ranges
Sensor Type
Gas Type
Formula
Range
Electrochemical (EC)
Hydrogen Sulfide
H2S
0-100 PPM
Electrochemical (EC)
Hydrogen Sulfide (High Range) H2S2K 0-2000 PPM
Electrochemical (EC)
Sulfur Dioxide
SO2
0-20 PPM
Electrochemical (EC)
Oxygen
O2
0-25 %
Electrochemical (EC)
Carbon Monoxide
CO
0-1000 PPM
Electrochemical (EC)
Chlorine
CL2
0-20 PPM
Electrochemical (EC)
Hydrogen Chloride
HCL
0-30 PPM
Electrochemical (EC)
Ammonia
NH3
0-100 PPM
Electrochemical (EC)
Ammonia (Medium Range)
NH3300 0-300 PPM
Electrochemical (EC)
Ammonia (High Range)
NH3A
0-1000 PPM
Electrochemical (EC)
Hydrogen
H2
0-4 % Vol
Electrochemical (EC)
Chlorine Dioxide
CLO2
0-1 PPM
Electrochemical (EC)
Hydrogen Cyanide
HCN
0-50 PPM
Electrochemical (EC)
Nitrogen Dioxide
NO2
0-20 PPM
Electrochemical (EC)
Phosphine
PH3
0-5 PPM
Infrared (IR)
Carbon Dioxide
CO2
0-5 %
Infrared (IR)
Combustible Gas
LEL
0-100 %
Catalytic Bead (CB2)
Combustible Gas
LEL
0-100 %
Photo Ionization Detector (PID) Volatile Organic Compounds
VOC10
0-10 PPM
Photo Ionization Detector (PID) Volatile Organic Compounds
VOC20
0-20 PPM
Photo Ionization Detector (PID) Volatile Organic Compounds
VOC50
0-50 PPM
Photo Ionization Detector (PID) Volatile Organic Compounds
VOC1K 0-1000 PPM
Photo Ionization Detector (PID) Volatile Organic Compounds
VOC2K 0-2000 PPM
Actual ranges may vary with our product. For inquiries beyond the information and instructions provided, contact the sales
representative of this product for assistance.
MEASURING CURRENT
If the value measured is 0 mA, then: the loop wires are broken, the sensor assembly is not powered up, the sensor assembly
is malfunctioning, or the monitor is malfunctioning. A digital multi-meter (DMM), or current meter, may be used in conjunction
with the monitoring device and/or to test the 4-20 mA current loop signal. To measure the current, place the meter probes in
line with the current loop.
54
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
APPENDIX B: MODBUS COMMUNICATIONS
Certain Otis Monitors have the capability of accepting Modbus sensor inputs for data communications with OI-6000 series
detectors. Modbus is a communication protocol that uses an RS-485 serial connection, and can accept a number of different
devices.
Based on the type of circuit used, there is a limit on how many devices that can be connected to a Modbus sensor network.
Otis Monitors currently allow a maximum of 32 devices on a single network. The data is transferred along the Modbus network
at a specified Modbus baud, or rate of speed. Though small, networks that have a high number of devices connected will incur
a small, proportional delay in the communication transfer of data.
WIRING CONFIGURATIONS
A daisy chain is a wiring scheme in which multiple devices are wired together in a sequence, or in a ring. Daisy chains may be
used for power, analog signals, digital data, or a combination thereof. For the purposes of Otis devices, the term daisy chain
refers to multiple devices connected in a series to form a single long line of devices, connected via the wiring patterns embedded
within each device.
Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of
canceling out electromagnetic interference (EMI) from external sources as well as “crosstalk” between neighboring pairs. In
electronics, crosstalk is any phenomenon by which a signal transmitted on one circuit or channel of a transmission system
creates an undesired effect in another circuit or channel. Otis products require twisted pairs for all wired Modbus connections.
Twisted pair cables are often shielded in an attempt to further prevent EMI. Electromagnetic shielding provides an electric
conductive barrier to attenuate electromagnetic waves external to the shield and provides a conduction path by which induced
currents can be circulated and return to the source, via ground reference connection. These cables are referred to as shielded
twisted pairs (STP) and are recommended for operation areas with high noise levels.
PROPER CONNECTION
The distance of the Modbus connection from the gas detection device to the monitor cannot exceed 4,000 feet. In the instance
of daisy-chained devices, this applies to the last sensor connected on the line. Connection distances of 100 feet, or less, require
22 to 24 gauge wire. Connection distances that range more than 100 feet require 18 to 20 gauge wire.
For more information on properly wiring a daisy chain network of devices for Modbus, consult the following diagram.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
55
APPENDICES
The signal wire of each unit is run to the signal terminal of the neighboring sensor. With each device connected to the previous
device via the signal wire, a “chain” is created, with the first device in the chain directly connected to the monitor.
RS-485 Modbus Connection Distances for Electrical Wiring
Distance
Length
Gauge Size
Short
< 100 Feet
22 to 24 Gauge
Medium
101 Feet to 1,000 Feet
18 to 20 Gauge
Long*
1,000 Feet to 4,000 Feet
18 to 20 Gauge
Twisted Pairs
Shielded, in areas of high noise
Shielded, in areas of high noise
Shielded, in areas of high noise
(*) Terminating resistor may be required for the last device in the daisy-chain.
56
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
APPENDIX C: MODBUS REGISTER MAP
OI-6000 MODBUS REGISTER MAP
Register
Address
(Hex)
1
3
4
5
6
7
8
9
B
C
E†
10†
16
17†
18
Register
Address
(Dec)
1
3
4
5
6
7
8
9
11
12
14†
16†
22
23†
24
19
1A
1C
25
26
28
Data Description
R/W
Length
Unit
Gas Reading
Modbus Address
Gas Type
Unit Type
Major Revision
Minor Revision
Mode of Sensor
Voltage Reading
Fault Code
Sensor Type
Relay 1 Setting
Relay 2 Setting
Precision
Relay Setting
Days Since Last Null
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
2
1
1
1
1
1
1
2
1
1
2
2
1
1
1
FLOAT
UINT
ENUM
ENUM
UINT
UINT
ENUM
FLOAT
ENUM
ENUM
FLOAT
FLOAT
INT
BFLD
UINT
Calibration Type
Auto-Calibration Value
Days Since Last Calibration
R
R
R
1
2
1
ENUM
FLOAT
UINT
Valid Response(s)
Numerical Gas Reading
0 – 247
0 – 26, see below
0 – 1, see below
0 – 100
0–9
0 – 7, see below
12V – 35V
0 – 6, see below
0-4, see below
1 – 32000
1 – 32000
0–3
See Relay Setting Table
0 – 60000
(>60000) Default to “Never”
0–1
Numerical Gas Reading
0-60000
(>60000) Default to “Never”
1E
30
Relay 1 State
R
1
INT
1F
31
Relay 2 State
R
1
INT
20
32
Relay 1 Reset
R/W
1
INT
21
33
Relay 2 Reset
R/W
1
INT
0 – Relay Inactive
1 – Relay Active
0 – Relay Inactive
1 – Relay Active
Read as 0
Write 1 to reset Relay 1 state
Read as 0
Write 1 to reset Relay 2 state
Register Address 1: Hexadecimal numbers
Register Address 2: Decimal numbers
R/W: Read/Write capable data
R: Read-only data
FLOAT: Floating point number
ENUM: Enumeration
UINT: Unsigned integer
INT: Integer
BFLD: Bit Field
(*): Limited by precision
(†): Relays are equivalent to the Alarm LEDS on OI-6000-X-X-S
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
57
APPENDICES
OI-6000 MODBUS REGISTER MAP ENUMERATION KEYS
Register Address 4: Gas Type
Response
0
1
2
3
4
5
6
7
9
10
11
12
13
17
26
Gas Type
H2S – Hydrogen Sulfide
SO2 – Sulfur Dioxide
O2 – Oxygen
CO – Carbon Monoxide
CL2 – Chlorine
CO2 – Carbon Dioxide
LEL – Combustible Gas
VOC – Volatile Organic Compounds
HCL – Hydrogen Chloride
NH3 – Ammonia
H2 – Hydrogen
CLO2 – Chlorine Dioxide
HCN – Hydrogen Cyanide
NO2 – Nitrogen Dioxide
PH3 -- Phosphine
Register Address 5: Unit Type
Response Unit Type
0
PPM
1
%
Register Address 8: Mode of Sensor
Response
0
1
2
3
5
6
7
Sensor Mode
Normal Operating Mode
Null Mode
Calibration Mode
Relay Test Mode
Diagnostic Mode
Advanced Mode
Administrator Mode
Register Address B/11: Fault Code
Response
0
1
4
5
6
58
Fault Type
No Fault
Loss of Communication with Sensor Board
Loss of Communication with Sensor Element/Housing
Null Error
Calibration Error
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
Register Address C/12: Sensor Type
Response
Sensor Type
0
EC – Electrochemical
1
IR – Infrared
4
PID – Photo Ionization Detector
Register Address 17/23: Relay Setting
Bit
5
4
3
2
1
0
Relay Setting
Function
0 – Fall
Relay 2: Rise/Fall Setting
1 - Rise
0 – Fall
Relay 1: Rise/Fall Setting
1 - Rise
0 – No (Off)
Relay 2: Failsafe Setting
1 – Yes (On)
0 – No (Off)
Relay 1: Failsafe Setting
1 – Yes (On)
0 – UnLatch
Relay 2: Latch/UnLatch
1 - Latch
0 – UnLatch
Relay 1: Latch/UnLatch
1 – Latch
Register Address 19/25: Calibration Type
Response Calibration Type
0
Manual Calibration
1
Auto Calibration
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
59
APPENDICES
APPENDIX D
OTIS INSTRUMENTS, INC.
PRODUCT WARRANTY STATEMENT
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OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
Product Warranty Statement
Warranty Coverage
Otis Instruments, Inc., 301 S. Texas Avenue, Bryan, Texas, 77803 (“Otis”) warrants the manufacture of all Otis hardware,
firmware, software, components, and product accessories (“Otis Products”), contained in the original packaging, against
defects in materials and workmanship when used normally in accordance with Otis’ published guidelines for a period of ONE
(1) YEAR from the date of original purchase by the end-user/purchaser from the manufacturer or from the product’s authorized
sellers/distributors (“Warranty Period”). Otis’ published guidelines include but are not limited to information contained in
technical specifications, operation/user manuals and service communications.
Warranty Exclusions
This Warranty does not apply to any non-Otis manufactured products, even if packaged or sold with Otis Products. Otis does
not warrant that the operation of their manufactured products be uninterrupted or error-free. Otis is not responsible for damage
arising from failure to follow instructions relating to the Otis Product’s use.
This Warranty does not apply to: (a) batteries; (b) protective coatings that are designed to diminish over time, unless failure
has occurred due to a defect in materials or workmanship; (c) cosmetic damage, including scratches, dents and chipping of
paint; (d) damage, caused by use with another product accident, abuse, misuse, or any external cause of force majeure; (e)
damage, caused by operations outside of Otis’ published guidelines; (f) damage, caused by service performed by anyone who
is not a representative of Otis or who is not an Otis authorized service provider; (g) damage, caused by product modifications,
alterations of functionality or capability; (h) defects, caused by normal wear and tear or otherwise due to the normal aging of
the Otis product, or (i) any product in which a product-labeled serial number has been removed, defaced, or altered in any
way.
If examination and assessment discloses that the alleged defect in the product does not exist, or was caused by the end-user/
purchaser (or any third-party) misuse, neglect, improper wiring or installation, testing or calibrations, the Otis Product Warranty
will be null and void. Any unauthorized attempts of repair, modification, or any other cause of damage beyond the range of the
Otis Product’s intended use, including force majeure, voids all liability of the manufacturer.
Replaceable Batteries and Sensor Elements
All batteries supplied to the end-user/purchaser by Otis are covered, from the date of shipment, for ninety (90) days, unless
otherwise excluded and noted†. Sensor elements supplied to the end-user/purchaser by Otis have individual Warranty
information, regarding Product Lifetime and Warranty. For more information on sensor element Warranties, refer to the Otis
published guidelines.
End-User Responsibilities
End-user/purchaser should perform periodic null and calibration procedures, recommended every thirty (30) days, not to
exceed ninety (90) days, for optimal performance, proper maintenance, and as a precaution against possible operational
failures.
Before the end-user/purchaser receives the initial Warranty service, Otis may require the end-user to furnish proof of purchase
details, respond to questions designed to assist with diagnostics, and follow Otis procedures for obtaining Warranty service.
For Otis Products that feature data logging and data storage, the end-user/purchaser should generate a separate backup
copy of the information contained on the device, before submitting the Otis Product for Warranty service. Otis Warranty
service is not responsible for any loss of data or settings stored on the device while under service/repair.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
61
APPENDICES
Otis Products submitted to Warranty service must be returned in their complete assembly, as originally shipped from the
manufacturer. Warranty service will not service/repair Otis Products that are not in their original condition. For Otis Gas
Detection Products, also referred to as Sensor Assemblies, the end-user/purchaser must remove external antenna(s), rain
guard(s), and all batteries before shipping.
Otis Products submitted to Warranty service will be returned, as originally configured, with the factory default settings, upon
completion of the service/repair. Otis is not responsible for maintaining end-user/purchaser settings, resetting the null,
recalibration, or any other preparations for reinstallation and/or reintegration of the device.
Warranty Service
Please refer to the Otis published guidelines and/or the Otis website before seeking Warranty service. If the Otis Product
continues to malfunction/error after consulting these resources, please contact the product’s authorized seller/distributor or
consult the Otis RMA/Service webpage at www.otisinstruments.com/service for information and instructions on submitting the
Otis Product for Warranty service.
Otis Warranty service, at their discretion, will (a) repair the device using new or previously used parts that are equivalent to
new in performance and reliability, (b) replace the Otis Product with a device that is at least functionally equivalent to the Otis
product and is formed from new and/or previously used parts that are equivalent to new in performance and reliability, or (c)
exchange the Otis Product for a refund of your purchase price, when an Otis Product is submitted.
Otis Warranty service will treat service/repairs as quick-turn exchanges. Otis Warranty service does not replace any board
level components, (i.e. magnetic switches, resistors, capacitors, relays, etc.).
Otis Products may require the replacement of certain user-installable parts or Otis Products. A replacement part or Otis
Product, including a user-installable part that has been installed in accordance with instructions provided by Otis, assumes the
remaining term of the Warranty, or ninety (90) days from the date of replacement or repair, whichever provides the longer
coverage for the end-user/purchaser. When an Otis product or part is replaced, or a refund is provided, any replacement item
becomes your property and the replaced or refunded item becomes Otis’ property.
For Otis Products requiring Warranty service that are located outside of the United States, the customer is responsible for
compliance of all import/export laws and regulations/requirements, including associated taxes and other charges. Where
applicable, Otis Warranty service may repair/replace products with parts that comply with local/regional standards.
Otis Products covered under Warranty will receive service/repairs at no charge to the end-user/purchaser. Otis Products not
under Warranty will be diagnosed for service/repair and the end-user/purchaser will be notified of the recommended
service/repairs and applicable charges. The completion of the service/repairs, or the return of the unrepaired product, is at the
discretion of the end-user/purchaser. Charges assessed for service/repair on Otis Products not under Warranty are at a rate of
list cost minus dealer/distributor percent discount.
Upon completion of Warranty service, Otis Warranty service will return the device to the end-user/purchaser. Please consult
the Otis website for more information concerning shipping costs for Warranty service.
Otis reserves the right to change the method by which Otis Warranty service is provided. Otis also reserves the right to
change the Otis Product’s eligibility to receive a particular method of service. Warranty service may be limited for Otis
Products in the country where the manufacturer or product’s authorized sellers/distributors originally sold the product.
Warranty service options, parts availability and response times may vary.
(†) Battery for the GEN II Model OI-6940 “The Quad” WireFree Explosion-Proof Battery-Powered Multi-Gas Detector is excluded from the ninety (90) day
warranty policy.
62
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
APPENDIX E: INFORMATION ABOUT RMA SERVICE REPAIRS
Otis Instruments, Inc. offers technical support to our customers. Please contact the Otis Instruments RMA Service Department
for technical support, repair requests, warranty inquiries, end-user commission reports, dealer/distributor support, and Modbus
setup inquiries and services.
This appendix is for information purposes only. Please visit our website at www.otisinstruments.com/RMA to obtain the latest
version of the Otis Instruments, Inc. Return Material Authorization (RMA) Service Repair Form and shipment instructions.
IMPORTANT INFORMATION
All RMA Service repairs must be shipped to OTIS Instruments / Repairs, 301 South Texas Ave., Bryan, Texas 77803.
To ensure that RMA Service repairs are processed as timely as possible, the Otis Instruments, Inc. Return Material Authorization
(RMA) Service Repair Form must be completed in its entirety and included within the box at the time of shipment. Customer
contact information and product information, including model number, serial number, and specific reason(s) for service, will need
to be accessible in order to complete the form. Shipments received that do not include the form, or if the form is incomplete,
will be returned (unrepaired) COD to the customer.
Products/parts must be shipped in the proper packaging and the shipping materials must adhere to ESD safety precautions, as
applicable. The entire assembly, as originally shipped from the manufacturer, must be returned for repair. When shipping
sensor assemblies (gas detectors), the antenna, rain guard, and battery must be removed prior to shipment. Failure to adhere
to these instructions will result in the products/parts being returned to sender.
Once the RMA Service Repair Form is received by the Otis Instruments RMA Service Department, a RMA Service number will
be generated. The RMA Service number will be sent to the email address provided for verification of receipt.
RMA Service quotes have a thirty (30) day expiration. Quotes that do not receive a purchase order response within thirty (30)
days of the quote will be canceled and all products/parts will be returned (unrepaired) COD to the customer.
Discontinued products may not be returned for RMA Service for repair. For a listing of the Otis Instruments, Inc. discontinued
products, please visit our website at www.otisinstruments.com/RMA. If your product/part has been discontinued, please contact
your local sales representative for replacement options.
All RMA Service repairs are treated as quick-return exchanges. Otis Instruments, Inc. does not replace board level components
(i.e. magnetic switches, resistors, capacitors, relays, etc.).
There is no charge for RMA Service repairs that are within the specified warranty period. For a copy of the Otis Instruments,
Inc. Product Warranty Statement, please visit our website at www.otisinstruments.com/official_statements. Products/parts that
are not within the specified warranty period will result in a charge to the customer for service.
Products/parts that fall within the Otis Instruments, Inc. operating specifications deemed defective due to customer
misapplication will be returned as is, and may result in a per unit evaluation fee to the customer. Otis Instruments, Inc. reserves
the right to return customer-damaged or no-fault found products/parts from the Otis Instruments RMA Service Department COD
to the customer.
If advanced replacement is required, please contact the Service Department for more information.
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
63
APPENDICES
INTERNATIONAL RMA SERVICE REPAIRS
The customer is responsible for complying with all import/export requirements for shipment of RMA/Service repairs to Otis
Instruments, Inc.
OTIS INSTRUMENTS RMA SERVICE DEPARTMENT
Otis Instruments / Repairs
301 South Texas Ave.
Bryan, Texas 77803
Office: 979.776.7700
Fax: 979.776.7719
service@otisinstruments.com
www.otisinstruments.com/RMA
64
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
APPENDICES
APPENDIX F: INFORMATION ABOUT RMA RETURNS FOR CREDIT
Without exception, all RMA Returns for Credit to Otis Instruments, Inc. must receive prior approval before shipment. Otis
Products received that do not have prior approval will be returned (uncredited) COD to the customer. For inquiries and approval
for RMA Returns for Credit, please contact your local sales representative.
This appendix is for information purposes only. Please visit our website at www.otisinstruments.com/RMA to obtain the latest
version of the Otis Instruments, Inc. Return Material Authorization (RMA) Return for Credit Form and shipment instructions.
IMPORTANT INFORMATION
All RMA Returns for Credit must be shipped to OTIS Instruments / RMA Returns, 301 S. Texas Avenue, Bryan, Texas 77803.
Product/part returns must be in their original condition and packaging, as shipped from the manufacturer. Returns that do not
meet these specifications will be rejected for return for credit. Otis Instruments, Inc. reserves the right to return products/parts
deemed to be inadequate (uncredited) COD to the customer.
To ensure that Returns for Credit are processed as timely as possible, the RMA Return for Credit Form must be completed in
its entirety and included within the box at the time of shipment. Customer contact information and product information, including
model number, serial number, and specific reason(s) for service, will need to be accessible in order to complete the form.
Shipments received that do not include the form (or if the form is incomplete) will be returned (uncredited) COD to the customer.
Once the shipment is received by the Otis Instruments RMA Returns Department, a RMA number will be generated. The RMA
number will be sent to the email address provided for verification of receipt.
All RMA Returns for Credit will be processed for approval by the manufacturer.
A restocking fee of 15% will be charged for all products/parts returned to the manufacturer.
Discontinued products may not be returned for credit. For a listing of Otis Instruments, Inc. discontinued products, please visit
our website at www.otisinstruments.com/RMA. If your product/part has been discontinued, please contact your local sales
representative for replacement options.
INTERNATIONAL RMA SERVICE REPAIRS
The customer is responsible for complying with all import/export requirements for shipment of RMA/Service repairs to Otis
Instruments, Inc.
OTIS INSTRUMENTS RMA RETURNS DEPARTMENT
Otis Instruments / RMA Returns
301 S. Texas Avenue
Bryan, Texas 77803
Office: 979.776.7700
Fax: 979.776.7719
service@otisinstruments.com
www.otisinstruments.com/RMA
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.0
65
Otis Instruments
301 S. Texas Avenue, Bryan, Texas 77803
Tel: 979.776.7700 Fax: 979.776.7719
sales@otisinstruments.com
service@otisinstruments.com
www.otisinstruments.com
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