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Model 5100-28-IT
IT Series
Infrared Combustible Gas Sensor Module
Version 3.00A
APPLICABILITY & EFFECTIVITY
Effective for all systems manufactured after December 2019.
Manual # T12013
Document Revision: J3
Model 5100-28-IT Combustible Gas Sensor Module
©2019 Sierra Monitor Corporation. All rights reserved.
Manual Number: T12013
This manual contains intellectual property that was developed by Sierra Monitor Corporation and is protected by the copyright laws of the United States, international copyright treaties, and all other applicable national laws. This manual contains information regarding technology that is protected under one or more issued or pending United States and foreign patents.
Sierra Monitor and Sentry IT are trademarks of Sierra Monitor Corporation. All other trademarks are the property of their respective owners.
This manual is licensed to users of Sierra Monitor products and may be copied, in whole or in part.
The offices of Sierra Monitor are located at:
Sierra Monitor Corporation
1991 Tarob Court
Milpitas, CA 95035
USA
Customer Service:
Telephone: +1 (408) 964-4443
Fax: +1 (408) 262-9042
Toll-Free: +1 (800) 727-4377
Email: [email protected]
Website: www.sierramonitor.com
Page 2 of 60
Model 5100-28-IT Combustible Gas Sensor Module
FM APPROVAL
ONLY THE FOLLOWING ITEMS, FUNCTIONS AND OPTIONS ARE FM * APPROVED
IT Infra-Red Gas Monitor
Sensor Module
Model 5100-28-IT-AL
Calibration Equipment
Model 1200-26
Model 1290-02
Model 5358-01
Model 5360-00
Model 5394-50
Model 1260-02
Model 1250-01
Model 1256-01
Specifications
Accuracy:
Response Time:
Input voltage:
Ambient Temperature Range:
Relative Humidity:
Methane Gas Sensor Module
Calibration Gas Delivery System
Combustible Gas Cylinder
Calibration Head, Standard
Calibration Gas Delivery Fitting
Remote Display, 5100-28-IT
Methane 50% LEL Gas Cylinder
Gas Sensor Calibrator Kit, Type A
Regulator Type A Calibrator
+/- 3% for 0-100% LEL range
T90<17.9 sec.
24 VDC nominal: 10-30VDC
-4 o to 140 o F (-20 o to 60 o C)
0-99% (Non-condensing)
Notes:
1) FM Approval applies only to conventional (one cable run per sensor module) or multiplexed (multiple sensor modules per cable) installations.
Apparatus must be installed in accordance with National Electrical Code.
2) FM Comments
* FM: FM Approvals
Project# 3021050
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Model 5100-28-IT Combustible Gas Sensor Module
TABLE OF CONTENTS
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Model 5100-28-IT Combustible Gas Sensor Module
Page 5 of 60
Model 5100-28-IT Combustible Gas Sensor Module
LIST OF FIGURES
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Model 5100-28-IT Combustible Gas Sensor Module
1 PRODUCT DESCRIPTION
1.1 General
The Model 5100-28IT Infrared (“IR”) Combustible Gas Monitor is a member of the Information Technology “IT” family of gas sensor transmitter modules. IT modules offer a broad array of features, including:
•
Integral Alphanumeric display
•
SIL-2 Certified
•
FM Approved for performance and hazardous locations
•
ATEX Certified for hazardous locations
•
UL2075 Approved
•
Optional Integral alarm relays (3)
•
4-20 mA output
•
Modbus ® RTU interface 1
•
SMC Sentry interface
•
Optional HART Interface
•
316 Stainless steel enclosure option
•
Remote Sensor option
•
% LEL or % Volume operation costs
IT modules are designed, and approved for installation and operation in hazardous locations
1.2 Product Configuration
Various module configuration options are available. Where applicable, these options are factory configured prior to shipment. Options which can be re-configured by the installer or field technician are fully described in this manual.
1.3 Theory of Operation
Infrared (IR) gas sensors operate on the principle of absorption of IR light. As air containing an IR absorbing gas passes between an IR source and IR detector, the amount of light detected is attenuated. The attenuation of IR light is then compared to a calibrated standard to determine the concentration of gas in the air sample.
1.4 Modes of Operation
1.4.1 Sentr y Interface
IT gas sensor modules can be installed on Sierra Monitor Sentry Model 5000 controllers Ver. 6.XX MFD after
9/1/95. Infrared modules communicate as a combustible gas sensor module (Type 2 – communication) and are automatically detected by the Sentry controller. When it is installed in a Sentry system the IT module must have a unique address which can be established by setting an address between 1 and 8 on the Module Address Switch accessible from the cover plate as illustrated in
Figure 10 in this manual provides the wiring
terminations for connections to the Sentry controller.
When the module is operated in conjunction with a Sentry controller, the alarm relay setup (
be set to “Sentry”, allowing the Sentry controller to manage alarm relay action rather than the 5100-28-IT Gas
Sensor Module.
1 Registered trademark of Schneider Electric.
Page 7 of 60
Model 5100-28-IT Combustible Gas Sensor Module
1.4.2 Modbus operation
An RS-485 Modbus RTU serial interface allows direct connection to standard Sentry IT, PLCs and DCSs. The
Module Address Switch ( Section
) allows the user to select up to 15 different Modbus addresses. Also, up to
terminations for Modbus connections.
1.4.3 Analog Operation
The analog 4-20 mA interface allows direct connection to standard controller and distributed system. The module is an active current source.
The standard configuration is set up for a 3-wire non-isolated connection. An optional 4-wire isolated connection is also available and can be enabled by changing JP1 and JP2.
1.4.4 Rem ote Sensor
The Remote Sensor option, enables the remote mounting of the sensor up to 100’ from the transmitter. See
Appendix G for more information.
1.4.5 Hart Connection
A HART interface option is available. Refer to Appendix H
for information.
1.4.6 Optional Integral Rela ys
The optional relays are integral to the gas sensor module and are rated as SPDT, 250V AC, 5 Amps for the High
Alarm and Low Alarm relays and SPDT, 250V AC, 0.25 AMP for the Trouble relay.
NOTE: HART option, alarm trouble relays are all SPDT, 250V AC, 2 Amp
If the gas sensor module is provided with the optional relays, it will include Terminal P4 on the interface board
( Figure 12 ). Relay output connections are on P4.
1.4.7 Rem ote Alarm Reset
for connecting the remote alarm reset. This only resets local alarms, not Sentry alarms.
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Model 5100-28-IT Combustible Gas Sensor Module
1.5 Mechanical
The sensor module of comprised of the following three primary components:
1.5.1 Enclosure
Figure 1: Model 5100-28-IT-A1/A2 Combustible Sensor
– Cast Aluminum Enclosure Dimensions
Figure 2: Model 5100-28-IT-S1/S2 Combustible Sensor
– 316SS Enclosure Dimensions
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Model 5100-28-IT Combustible Gas Sensor Module
Figure 3: Model 5100-99-IT Combustible Sensor – Mounting Options
1.5.2 Transm itter Electronics
Electronic Assembly consisting of one printed circuit board assembly mounted under a cover plate, plugged into one field termination board. Connectors for wiring for power, signal interface and alarm relays are located on the bottom of the termination board.
1.5.3 Sensor Assem bly
The sensor assembly includes an explosion proof housing containing the gas sensor and a wiring harness for connection to the transmitter. The sensor assembly threads into one hub of the enclosure. The exposed end of the sensor assembly is threaded to allow connection of a rain-shield or calibration gas.
1.6 Interconnected W iring
Not supplied with the sensor module, but necessary to the installation and operation is the multi conductor wiring which connects the module to its power source and controller. Before this wiring is installed it is important to read and understand the control system installation instructions to determine wiring alternatives requirements and alternatives.
1.7 Power Requirements
IT modules operate on DC power between 10V DC and 30V DC. Regulated DC power must be supplied form a separate source, or from an approved Sentry of IT controller.
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Model 5100-28-IT Combustible Gas Sensor Module
2 CAUTIONS & WARNINGS
2.1 Introduction
Although IT Transmitter Modules are designed and constructed for installation and operation in industrial applications including "hostile" environments, caution should be taken to insure that the installation is made in compliance with this instruction manual and that certain procedures and conditions are avoided. This chapter discusses the necessary cautions. Read the entire chapter prior to installation of the equipment.
CAUTION: For safety reasons this equipment must be operated and serviced by qualified personnel only.
Read and understand instruction manual completely before operating or servicing.
ATTENTION: Pour des raisons de securite, cet equipement doit eotre utilise, entretenu et repare uniquement par un personnel qualifie. Etudier l e manuel d’instructions en entier avant d’utiliser, d’entretenir ou de reparer l’equipement.
CAUTION: This area must be free of flammable gases during calibration.
ATTENTION: Cette zone doit rre exempte de gaz inflammables pendant l’etalonnage.
2.2 Gas Sensor Modules – General
Avoid installing sensor modules where they will be unnecessarily exposed to wind, dust, water (i.e. direct hose down), shock, or vibration. Observe temperature range limitations.
Sensors may be adversely affected by prolonged exposure to certain materials. Loss of sensitivity, or corrosion, may be gradual if such materials are present in low concentrations. These materials include: Halides (compounds containing chlorine, fluorine, bromine, iodine), acid vapors, caustic liquids or mists.
Care has been taken by the manufacturer to ship your modules in protective packaging to avoid contamination prior to installation. It is recommended that the modules remain protected during installation and that the covering be removed immediately prior to system start-up.
During normal use the sensor is protected from dirt and oil contamination by a sintered metal cover. If this cover becomes clogged, the response of the sensor will be reduced. Protect the sensor from contamination by careful placement, or by use of rain and dust shields.
Sensor modules must not be painted. Paint may contain compounds which will contaminate the sensor. Paint will cause clogging of the sintered metal cover and will cause difficulties during attachment of the calibration head or other maintenance activity. It is recommended that the module be tagged "DO NOT PAINT" .
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Model 5100-28-IT Combustible Gas Sensor Module
2.3 W iring W arnings
The manufacturer recommends that extra caution be taken where the installation is near any sources of electromagnetic or radio frequency interference. Precautions include:
•
Avoid running sensor module cable close to high power cables, radio transmission lines, or cables subject to pulses of high current.
•
Avoid running cables near large electric motors, generators or variable drive motors.
•
Unit is shipped with RF filter that is clipped onto the sensor assembly connector.
•
User will need to install RFI Noise Suppressor supplied with each sensor module as per Appendix F .
•
When the sensor module is to be operated in analog (4-20 mA output) mode shielded cable is required.
•
When shielding is used, it is recommended that shields be grounded at the controller and nowhere else.
•
All splices must be via either a termination hardware system or soldered. Improperly spliced cable can result in corrosion, resistance changes and system errors. The use of wire nuts and crimp-on connectors is unacceptable.
NOTE: Installation and wiring must be in accordance with the National Electrical Code. AC Voltage conductors are not to be run in the same conduit as DC voltage conductors.
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Model 5100-28-IT Combustible Gas Sensor Module
3 QUICK START
3.1 Overview
The gas sensor module has been supplied factory calibrated and ready for immediate installation and operation.
An installer familiar with installation and operation of gas detection products can use this section to begin immediate use of the module.
3.2 W iring
See
to determine if 3-wire or 4-wire operation is necessary.
Provide twisted shielded or triad type wiring from the power supply/control device to the sensor module location.
Use stranded wire that is 16 AWG or larger.
3.3 Module Installation
determine which configuration is best for your specific application. The default configuration enables the modules to be put in line with other modules with the sensor element below the transmitter. To change the configuration simply remove the transmitter and rotate to the appropriate configuration and remount the standoffs and transmitter.
The module is designed to be installed on a ¾” conduit. Two important warnings:
•
The installation must meet any hazardous environment codes for electrical equipment.
•
The sensor module enclosure mounting must be spaced far enough from any vertical surface to allow removal and replacement of the sensor assembly which is threaded into one ¾” conduit entry.
•
Sensor housing must be oriented vertically pointing downward.
•
If module is installed outdoors it is recommended that it be sheltered from direct sunlight.
3.4 Transmitter Installation
To install the transmitter printed circuit assembly into the housing, carefully turn the faceplate so that the printing is in the correct horizontal position for the mounting configuration and slide the assembly over the two stand-offs in the enclosure.
Hand tighten the two captive panel thumb screws into the stand-offs. Replace the enclosure cover prior to providing power to the transmitter.
NOTE: If the transmitter is installed in a classified hazardous area, replace the threaded cover prior to providing power.
3.5 Start-Up & Operation
To begin operation of the sensor module, activate the instrument loop with 10-30V DC. Each time the sensor module is powered up it will perform a warm-up for approximately 5-10 minutes. During this time the display will read “Starting”. The loop output will be held at 4 mA.
NOTE:
If the sensor is uncalibrated, the startup display will state “START” instead of “STARTING”.
After the warm-up period has expired, the display will indicate the gas concentration. Also, the instrument loop will be released to output current in the range of 4 to 20 mA. The actual current is linear with the gas concentration.
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Model 5100-28-IT Combustible Gas Sensor Module
4 INSTALLATION
NOTE: All IT modules are factory pre-configured and calibrated.
All modules are tagged to indicate the configuration including the sensor module number.
Identify all components during unpacking and install using the factory configuration.
4.1 Sensor Module Locations
Select locations for each sensor modules based on the following:
•
Modules should be placed close to the potential source of gas.
•
Modules should be placed in areas accessible for calibration.
•
Sensors should be pointed down and the conduit should include an inverse trap to reduce moisture
(condensation) from accumulating in the electronics enclosure.
•
Remote calibration fitting (5360-00) should be used to facilitate calibration gas delivery. Run polyurethane tubing (1/4” O.D. x 1/8” I.D.) from fitting to an accessible location.
Figure 4: Typical Mounting Options
NOTE: Module must always be installed vertically with sensor pointing down.
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Model 5100-28-IT Combustible Gas Sensor Module
4.2 W iring
4.2.1 Analog 4-20 m A Operation
For a 3-Wire non-isolated connection, set jumpers, located on the bottom of the transmitter board, to the lower
3-wire connection, a minimum of a 16 AWG, 3 conductor shielded cable must be used. A cable shield must never be used as a conductor. Larger gauge wire is recommended with distances over 1000’. Connect wires as shown
For a 4-Wire isolated connection, set jumpers, located on the bottom of the transmitter board, to the upper
4-wire connection, a minimum of 2 each of a 16 AWG, 2 conductor twisted/shielded pair cable must be used. A cable shield must never be used as a conductor. Larger gauge wire is recommended with distances over 1000’.
Connect wires as shown in Figure 9 .
4.2.2 Modbus Operation Using Rs -485 Connection
Use a minimum of 16 AWG, 2 conductors for DC power connection. No shield required. In addition, use a minimum of 24 AWG, low capacitance, shielded data cable for RS485 half-duplex communication. The installation may be planned in a manner which provides up to 32 sensor modules on a single home run.
TERMINATION RESISTOR JUMPERS:
Termination resistors are used in RS-485 wire runs to provide impedance matching. The IT series modules use a
120 Ohm resistor for this function. The cable being used for this RS-485 connection must have a minimum of 100
Ohm impedance with a maximum of 120 Ohms.
Installations where the cable length is under 100’, termination resistors may not be required. In installations where the cable length is greater than 100’, it is recommended to place the termination jumpers on the first device and last device on the RS-485 wire run. Termination jumpers must be removed from all other modules connected between the first and last device. The first device in the RS-485 multiplexed bus is usually a gas controller or
PLC. Factory term resistor setting is “not enabled.”
BIAS JUMPERS: (BIAS A, BIAS B)
Bias resistors are used to force RS-485 receiver outputs to a known (fail-safe) state, when the bus is idle. Bias jumpers are always installed in pairs as the bias must be placed on both the TX A and TX B lines. Sierra Monitor’s
IT series of combustible gas sensors automatically apply the bias jumpers, and are factory installed so that the bias is always enabled.
4.2.3 Sentr y Operation Using Sentr y PSG Connection
Use a minimum of 18 AWG, 3conductor cable up to 2000’. The cable may or may not be shielded. We recommend shielded cable in circumstances that there could be RF or EM interference present. Shield to be terminated and grounded only at the Sentry controller. Shield must be cut and dressed at the module end so that no part of it comes in contact with the conduit or ground.
NOTE: Be sure to follow all local electric code and safety requirements when installing the 5100-28-IT
Gas Sensor Module.
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Model 5100-28-IT Combustible Gas Sensor Module
4.2.4 General
Install conduit as required by local code or construction specifications. Provide for splice boxes where multiple modules will be wired to a single run. Pull conductors of the correct gauge wire from the controller to each splice box and from the respective splice box to each planned module location. See for proper wire termination in the splice box. Twisted wire secured with wire nuts is not an acceptable splice.
NOTE: RFI Noise Suppressor must be added to power/ground as per Appendix F .
NOTE: The drain wire of the shielded cable must NOT be used as one of the conductors.
NOTE: Installation and wiring must be in accordance with the National Electrical Code. Temperature rating of cable wire must be at least 75 o C. If cable runs through higher temperature environments, it must be specified for that environment.
4.3 Enclosure Installation
To protect the transmitter and sensor assembly they should be removed from the enclosure and preserved until final installation and wiring termination.
Number of
Modules
1
2
3
4
Maximum length of wire run (feet)
500 1,000 2,000 3,000 5,000
18 18 16 16 14
18
18
18
16
14
12
12 xx xx xx
16 14 12 xx xx
Figure 5: Minimum Wire Gauges
Prior to installation and wiring.
1. Remove the transmitter from the module housing by: a. Unscrew the two captive panel screws in the face plate. b. Lift the transmitter out of the enclosure housing. c. Unplug the sensor cable from transmitter assembly connector J2. d. Remove the sensor assembly from the enclosure hub.
2. Install the module housing onto the end of the supply conduit and/or bolt into position as required.
NOTE: When housing earth grounding is required for the installation a grounding lug is located in the base of the enclosure. Install the earth ground wire under the green lug.
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Model 5100-28-IT Combustible Gas Sensor Module
4.4 Transmitter and Sensor Installation
When all pre-wire is complete:
1. Install sensor assembly in the open hub on the module enclosure. The sensor assembly thread must be fully seated into the hub and tightened to maintain explosion proof assembly.
2. Verify that RFI filter is installed as shown in the Sensor Housing with Suppressor Drawing (Figure 8-2 in the Table of Contents, List of Figures).
3. Connect the sensor assembly cable to top transmitter board connector J2.
4. Align the headers between the top transmitter board and the lower termination board and push together.
5. Turn rotary switch to correct sensor address if required.
6. Carefully return the transmitter to the enclosure installing it over the two stand-offs. Tighten the retaining screws into the stand-offs.
7. Cycle power to accept module address change.
8. Establish the module address as shown in
P1
1
2
3
4
5
6
7
1
2
3
1
2
3
4
5
6
4
5
PCB Label Function
Switch
IN + Digital Input SW +
IN - Digital Input SW -
IN + 4-20 mA Input +
4-20
IN -
GND
4-20 mA Input -
Ground
4-20
OUT + 4-20 mA Output +
OUT - 4-20 mA Output -
RS 485
P
S
G
+
-
S
+
-
S
P2
RS 485 (+) (A)
RS 485 (-) (B)
RS 485 shield (Isolated GND)
RS 485 (+) (A)
RS 485 (-) (B)
RS 485 shield (Isolated GND)
P3B
VDC Power
Sentry Signal or
Communication
VDC Ground
P
S
P3A
VDC Power
Sentry Signal or
Communication
G VDC Ground
P4*
1
PCB Label Function
N/C Low Alarm Relay NC
5
6
7
8
2
3
4
WARNING
ALARM
COM Low Alarm Relay COM
N/O Low Alarm Relay NO
N/C High Alarm Relay NC
COM High Alarm Relay COM
N/O High Alarm Relay NO
N/C Trouble Alarm Relay NC
COM Trouble Alarm Relay COM TRBL**
9 N/O Trouble Alarm Relay NO
* P4 Connections are installed only when the optional
Relays are included
** Trouble relay is a fail-safe so it is energized for normal operation, functions are labeled for normal operation.
6
NOTE: The starting delay period normally takes approximately 3 minutes but under some circumstances can take longer.
Page 17 of 60
Model 5100-28-IT Combustible Gas Sensor Module
4.5 Module Address Switch
For digital interface applications, the module address switch (or Modbus node) must be set per the table below.
Position Address Position Address
1
2
3
4
5
6
7
8
Sensor 1
Sensor 2
Sensor 3
Sensor 4
Sensor 5
Sensor 6
Sensor 7
Sensor 8
9
A
B
C
D
E
F
0
Sensor 09
Sensor 10
Sensor 11
Sensor 12
Sensor 13
Sensor 14
Sensor 15
Software Menu
Figure 6: Sensor Module Address Switch Positions
NOTE: For Sentry applications, only sensor addresses 1-8 are allowed. If using Modbus output sensor addresses 1-15 are available. Position 0 allows the Modbus Address to be set by software menu, in the range 16-254.
The transmitter face plate image below refers to analog, Modbus and Sentry Operation.
Figure 7: Transmitter Face Plate
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Model 5100-28-IT Combustible Gas Sensor Module
Figure 8: 4-20 mA Circuits Types 5100-28-IT
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Model 5100-28-IT Combustible Gas Sensor Module
Figure 9: 4-20 mA Circuits Types 5100-28-IT – Connections
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Model 5100-28-IT Combustible Gas Sensor Module
Figure 10: Digital Interface Connections
Figure 11: Wiring Connections for Remote Alarm Reset
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Model 5100-28-IT Combustible Gas Sensor Module
Figure 12: Termination Drawing
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Model 5100-28-IT Combustible Gas Sensor Module
5 OPERATION
The Gas Sensor Module utilizes a visual menu system operated by means of a magnet. A magnetic tool (5358-
50) is supplied for this purpose. The menu system is used to configure alarm set-points, calibrate the sensor module, and for maintenance procedures and alarms acknowledge.
5.1 Data Entry Keypad
The module menu system is operated by means of directing the magnet stick toward each of four independent hall-effect magnetic switches. Each switch functions as if it is a manually activated panel key. The keys are located above and below the faceplate display and are labeled M , E ,
▲ and ▼ as shown in Figure 13 . The key
functions are as follows:
Figure 13: Face Plate with Operator Key Pad
Page 23 of 60
Model 5100-28-IT Combustible Gas Sensor Module
5.2 Main Menu
The table below describes the primary human-machine interface operation.
Key Function Display
M E
▲ ▼
M E
▲ ▼
M E
▲ ▼
M E
▲ ▼
Mode
Enter
Up
Down
5100-28
VXX-XX--
STARTING Third screen at start up: Starting Delay
--0% LEL-
Switch [M]
Switch [E]
Description
Switch [▲] Previous Menu
Switch [▼] Next Menu
First screen at power up: Model No.
Second screen at power up: Version No.
Normal condition - default display
M E
▲ ▼
M E
▲ ▼
Mode ALMRSET: Mode Function - Alarm Reset
Banner: "Press [E] to reset alarm"
RESET Alarm Reset
--0% LEL- Default Display
M E
▲ ▼
M E
▲ ▼
Mode
Mode
ALMRSET: Mode Function - Alarm Reset
CALIB:-- Mode Function - Calibrate
M E
▲ ▼
M E
▲ ▼
M E
▲ ▼
M E
▲ ▼
Mode
Mode
Mode
Enter
SETUP:--
MAINT:--
EXIT-?--
--0% LEL-
--0% LEL-
Mode Function - Set up alarms, relays, etc.
Mode Function - Maintenance
Exit Menu
Apply Selected Mode (Exit)
Reference
Default Display (Once a minute the sensor displays module address)
Figure 14: Master Menu Table
The table below describes the operational display values of the human-machine interface system.
Display Description
StArTing_
###%LEL
L##%LEL
H##%LEL
_High__
C##%LEL
__ACK__
Delay from loss of power at start-up
Concentration
Low Alarm (Warning)
High Alarm (Alarm)
Measures gas, concentration exceeds 100%
Calibration Mode
Acknowledged Function
Figure 15: Operation Display Values Table
NOTE: If display shows “Start” instead of “Starting”, the module must be calibrated before using it.
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Model 5100-28-IT Combustible Gas Sensor Module
5.3 Set-Up
The sensor module set-points menu is used to initially set-up the alarm set points, relay actions, gas type and
setup screen use the [▲] or [▼] keys to select sub-menu and use [E] to enter.
•
Alarms: Use the [ ▲] or [▼] keys to select Hi Alarm or Lo Alarm menu. Key [▲] will adjust the setpoint upwards and Key [ ▼] will adjust the value downwards. Once it reaches the desired setpoint, Key [E] will accept it and ACK will appear. Set-points can be configured using this menu to values between 0 and 60.
•
Relays: Use the [ ▲] or [▼] keys to select Hi Alarm or Lo Alarm relay menu and press [E]. Use the [▲] or
[ ▼] keys to select the correct alarm relay action for the application, Latch, Sentry or Non-Latch. Selecting
“Sentry” enables the Sentry controller to make all alarm action decisions. * indicates the current selection.
•
Gas: Use the [ ▲] or [▼] keys to select Range or Gas Type menu and press [E]. The “Gas Type” menu allows the user to select the primary gas of interest (Methane). Use the [ ▲] or [▼] keys to select the correct gas type for the application. When “Range” is selected menu provides any choices of ranges available for the gas type selected. Use the [ ▲] or [▼] keys to select the desired range.
Gas Type
Methane
Range 1
0-100%LEL
Range 2
0-100%VOL
•
4-20mA: Use the [ ▲] or [▼] keys to select Calib or CalibOut menu and press [E]. The “Calib” section of the menu allows the user to calibrate the 4 mA and 20 mA outputs. To calibrate the 4 mA and 20 mA outputs it is necessary to have an amp meter connected to the 5100-28-IT and upon selecting the 4 mA output calibration then the [ ▲] or [▼] keys can be used to adjust the 4 mA reading on the amp meter until it reads 4 mA. Similar steps can then be performed for the 20 mA output. The CalibOut section allows the user to select the 4-20 mA output action desired during calibration. * indicates the current selected value.
Available selections include: o Track – the 4-20mA value tracks the calibration gas exposed to the gas sensor module o C2.50mA
– the 4-20mA value is held at 2.50mA during calibration o C4.00mA
– the 4-20mA value is held at 4.0mA during calibration o User defined value
•
RS-485 - Use the [ ▲] or [▼] keys to select Address or Baud rate menu and press [E]. Note that the 5100-
28-IT has a rotary switch on the faceplate and it is used to select addresses 1-15. When connected to
Sentry the user can select 1-8 and using Modbus RS-485 the user can select addresses 1-15. For
Modbus addresses above 15 , set the rotary switch to 0 and then use the “Address” menu to select any address up to 254. The Baud rate menu allows the user to select a baud rate of 38400, 19200, 9600,
4800 or 2400. * indicates current selection.
•
RS-485 default parameters are: 38,400 baud, 8 bits, 1 stop bit, no parity
Page 25 of 60
Model 5100-28-IT Combustible Gas Sensor Module
The Table below describes the Set-up Configuration. For Sections C-E, find the Set-up Configuration table part 2
on the next page ( Figure 17 ).
Key
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
Function
Mode
Mode
Mode
Enter
Down
Down
Down
Down
M
▲
M
▲
E
▼
E
▼
M
▲
M
▲
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
Enter
Enter
Down (x5)
Enter
Enter
Down
Enter
Down
Down
Display Description
--0%LEL- Default Display
ALMRSET: Mode Function - Alarm Reset
CALIB:-- Mode Function - Calibrate
SETUP:--- Mode Function - Set Point Adjustments
Alarms S.P. Function - Alarm Adjust
Relays
Gas
S.P. Function - Relays Adjust
S.P. Function
– Gas Type/Range Adjust
4-20mA S.P. Function - 4-20 mA Adjust
RS-485 S.P. Function - RS-485/Sentry Output Adjust
High Alarm Set Point Adjustment Example
H. Alarm S.P. Function - High Alarm Adjust
HASP:60- High Alarm Set Point: current = 60
Use ▲ or ▼ keys to adjust to new set point
HASP:55- High Alarm Set Point: new = 55
ACK Momentary Acknowledge of new Set Point
H. Alarm S.P. Function - High Alarm Adjust
Relays Set Point Adjustment Example
H. Relay S.P. Function - High Alarm Relay Adjust
L. Relay S.P. Function - Low Alarm Relay Adjust
Latch
Use ▲ or ▼ keys to adjust to new relay action (Latch,
Sentry, NonLatc) * indicates current
Sentry
NOTE: Sentry indicates that Sentry controls relay action and not the IT Sensor Module
*Sentry Alarm Relay set to Sentry
Figure 16: Set-up Configuration Table – Part 1
Reference
See *A ref. below
See *B ref. below
See *C ref. below
See *D ref. below
See *E ref. below
*A
*B
Page 26 of 60
Model 5100-28-IT Combustible Gas Sensor Module
The table below describes Section C-E of the Set-up Configuration.
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
M
▲
Enter
Enter
Down
Mode
Down
Enter
Enter
Enter
Enter
Enter
Mode
Down
Enter
Enter
Enter
Enter
Enter
Enter
Down
Enter
Gas Range Adjustment Example
Gas Type S.P. Function
– Gas Type Adjust
*Methane If CCC001, then Methane is the only choice
Ethanol Press [E] if monitoring Ethanol
Gas Type Return to S.P. Function – Gas Type Adjust
Range S.P. Function
– Gas Range Adjust
*100% LEL
Select [E] to select or ▲ or ▼ to select another and press [E]
4-20 mA Adjustment Example
Calib S.P. Function - Calib Adjust
Out: 4mA
Use ▲ or ▼ keys to select 4 mA or 20mA
4mA
ACK
Calib
Selects 4 mA
Momentary Acknowledge of new Set Point
S.P. Function - Calib Adjust
CalibOut S.P. Function - Output during Calibration Adjust
Track
Use ▲ or ▼ keys to select Track, C2.50mA, C4.00mA
*Track
Track = Output during calibration tracks the calibration gas
C2.50mA = Output during calibration is 2.50 mA
C4.00mA = Output during calibration is 4.0 mA
User defined
* = Current selection
RS-485 Adjustment Example
Address S.P. Function - RS-485 Address Adjust
Addr:016
Use ▲ or ▼ keys to enter new address
ACK New address selected
Address S.P. Function - RS-485 Address Adjust
Baud
*38400
S.P. Function - RS-485 Baud Rate Adjust
Press [E] to select or
▲ or ▼ to select another
Figure 17: Set-Up Configuration Table
– Part 2
*E
*D
*C
5.4 Maintenance Sub-Menu
The maintenance menu allows the operator to verify module firmware version and configuration code. The maintenance menu operation is described in the table below.
Key
M
▲
M
▲
M
▲
M
▲
M
▲
E
▼
E
▼
E
▼
E
▼
E
▼
Function
Mode
Mode
Mode
Mode
Enter
Display
--0%LEL- Default Display
Description
ALMRSET: Mode Function - Alarm Reset
CALIB:-- Mode Function - Calibrate
SETUP:--
MAINT:--
V1.06aA
Mode Function - Set Point Adjustments
Mode Function - Maintenance
Module Software Version Number
Figure 18: Maintenance Menu Table
Reference
Page 27 of 60
Model 5100-28-IT Combustible Gas Sensor Module
6 CALIBRATION
6.1 Calibration Frequency
The 5100-28-IT has been calibrated in the factory prior to shipment. It is recommended that the user check calibration before placing in service. The IR sensor module must be calibrated annually. Periodic functional tests are advisable for critical applications and hostile environments.
The sensor module microprocessor software includes high level self-checking algorithms which provide continuous sensor diagnostic and self-adjustment. Users may elect to increase calibration periods based on low drift experience during the first two calibration periods.
6.2 Calibration Preparation
Calibration of the IR Sensor is accomplished by simple menu based steps and application of span gas.
NOTE: If an error is made during any stage of the calibration process, hold the magnet stick at the key M for 10 seconds. A scrolling display will indicate “Calibration aborted” and the sensor module will exit the calibration activity and return to normal operating mode. The calibration procedure can then be restarted.
Calibration must be performed only when the area is known to be clear of combustible gas. If necessary, use a portable instrument to confirm that there is no background combustible gas.
For compliance with Factory Mutual (FM) Apparatus, the Sierra Monitor Model 1200-26, 1250-01, 1256-01 and
1260-02 are the only FM Approved calibration gas delivery devices. Use Model 5358-01 Calibration Adapter or
Model 5360-00 Gas Delivery Fitting.
6.3 Calibration Gas Delivery Methods
Calibration gas can be delivered to the sensors via the following delivery devices.
Model 5358-01 : Calibration Adapter - use with portable calibrators.
Model 5360-00 : Calibration Gas Delivery fitting - permanently installed fitting which allows tubing to be run to a convenient delivery location.
Figure 19: Model 5358-01
Calibration Adapter
6.4 Calibration Procedure
The Calibration Table in
shows the step by step process of the calibration procedure.
The procedures require that the menu “keys” be activated using the magnet stick. Each key press steps through the process of setting the zero value for clean air and then setting the span value. Zero step performed for a minimum of two minutes.
At each of these steps, apply calibration gas of the value corresponding to the setting accepted on the sensor module display.
Page 28 of 60
Model 5100-28-IT Combustible Gas Sensor Module
6.5 Sensor Exposure to Gas
Calibration gas must be delivered to the sensor using the flow rate and duration listed in below:
Model
5100-28-IT
Gas Type
Methane
Flow
300 cc/min
Period
Until Stable –
3 minute minimum
NOTE: Following calibration, the IR module counts down for 300 seconds. During this time the module is updating its internal memory and it is very important that its power not be interrupted
6.6 Calibration Sub-Menu
The table below describes the Calibration Sub-Menu.
Key
M
▲
M
▲
M
▲
E
▼
E
▼
E
▼
M
▲
E
▼
M
▲
E
▼
M
▲
E
▼
M
▲
M
▲
M
▲
M
▲
M
▲
E
▼
E
▼
E
▼
E
▼
E
▼
M
▲
E
▼
M
▲
E
▼
Function
Mode
Mode
Enter
Enter
Enter
Enter
Down
Down
Enter
Up (x5)
Enter
Enter
Mode
Display
--0%LEL- Default Display
Description
ALMRSET: Mode Function - Alarm Reset
CALIB:-- Mode Function - Calibrate
CAL-0%-- Banner: Apply zero gas, enter [E] when done
Operation: Confirm area clear of gas or apply zero air to sensor
ACK Zero gas setting acknowledged
Reference
50%-SPAN Banner: Select span, enter [E] when done Sub A
CAL-50% Banner: Apply 50% gas, then enter [E] to calibrate gas sensor Sub B
Operation: Apply calibration gas
Operation: As gas is applied, the reading will increase – wait
3 minutes
CAL-OK Calibration Passed – now remove gas
WAIT-300
Operation: 5 minute time out before sensor is returned to service
Sub-Routines
50%-SPAN Banner: Select span, enter [E] when done
25%-SPAN Operation: Change span gas value to 25%
Adj-SPAN Operation: User adjustable value
50%-SPAN Operation: Ready for user adjustment
55%-SPAN Operation: User adjustment to new value 55%
Sub A
CAL-55% Banner: Apply 55% gas, then enter [E] to calibrate gas sensor Sub B
C 0%LEL
CAL-FAIL
WAIT-300
(Any)
Operation: Apply calibration gas
Operation: No calibration gas applied or sensor did not respond correctly
Operation: 5 minute time out before sensor is returned to service
Operation: Hold magnet over Mode Switch for 10 seconds to abort calibration
Banner: Calibration Aborted
Sub C
--0%LEL- Default Display
Figure 20: Calibration Table
Page 29 of 60
APPENDIX A.
SERVICE
Appendix A.1 Module Sub Assembly
Model 5100-28-IT Combustible Gas Sensor Module
Figure 21: Module Components
NOTE: Area must be determined to be non-hazardous before opening enclosure.
CAUTION: When removing sensor cable assembly, grasp connector shell and unplug. Do not pull directly on wires as damage may be done to assembly.
Appendix A.2 Enclosure Replacement
The enclosure should be replaced if the cover threads or conduit threads have been damaged, or if the enclosure has been damaged sufficiently that it no longer meets the required NEMA classification.
To replace the enclosure, follow the transmitter and sensor assembly removal instructions, remove the damaged enclosure from its conduit, install a new enclosure and continue the transmitter and sensor assembly replacement instructions.
Page 30 of 60
Model 5100-28-IT Combustible Gas Sensor Module
Appendix A.3 Transmitter Replacement
The transmitter assembly should be replaced when it is determined that it is unreliable, noisy or cannot be calibrated. This situation may occur due to age, corrosion or failed components.
To replace the transmitter assembly:
1. Confirm that system power has been removed.
2. Remove the cover of the main enclosure.
3. Unscrew the two thumb screws in the top of the cover plate, lift the assembly and rotate 90 o to relieve the wiring service loop.
4. Unplug the sensor connector from the transmitter assembly.
5. Plug connector into new transmitter (be sure to match numbers between connector and socket).
6. Restore power and allow a minimum of 3 hours for stabilization before re-calibration.
Appendix A.4 Sensor Replacement
The gas sensor which is located inside the sensor assembly housing can be replaced without replacement of the housing. The gas sensor needs replacement when:
• The “CAL-FAIL” message appears after calibration.
•
The sensor output signal is noisy, causing erroneous gas level readings.
• The “Fail 002” message displays.
• The “Enable 4-20mA → Yes No” banner appears during start-up.
To replace the sensor assembly:
1. Confirm that system power has been removed.
2. Remove the gas sensor module enclosure cover.
3. Unscrew the two thumb screws in the top of the faceplate, lift the transmitter assembly and rotate 90 o to relieve the wiring service loop.
4. Unplug the sensor connector from the transmitter.
5. Unscrew the old sensor assembly from the enclosure conduit hub. Remove the sensor assembly with its harness.
6. Install new sensor assembly into conduit hub.
7. Install ferrite noise filter on sensor wire.
8. Allow the new sensor to stabilize for a minimum of 4 hours and then calibrate using the procedure in
Appendix A.5 Installation Inspection
Prior to system start-up or trouble shooting the entire system should be visually inspected. The following are guidelines for that inspection:
Appendix A.5.1 Controller Installation
•
Controller installed in conformance to instruction manual recommendations.
•
AC power is correctly grounded.
•
Hot AC and relay connections have safety covers installed.
Page 31 of 60
Model 5100-28-IT Combustible Gas Sensor Module
Appendix A.5.2 Sensor Module Installation
•
Module installation in conformance with this manual.
•
Modules accessible for calibration.
•
Wiring terminations clean and correct.
Appendix A.5.3 Moisture Traps a nd Rainshields
•
Conduit seals and drains installed to avoid moisture build up in electronics enclosure. Water accumulation in sensor module enclosures is a major cause of damage and system failures - take precautions to seal electrical conduits and provide moisture traps and drains to avoid water damage
•
Rain-shields installed where applicable.
Appendix A.5.4 Standard Voltages
Regulated DC Voltage to be applied to the sensor module must be between 10VDC and 30VDC.
Page 32 of 60
Model 5100-28-IT Combustible Gas Sensor Module
APPENDIX B.
INSPECTION AND TROUBLESHOOTING GUIDE
The inspection and troubleshooting guide can be used to step through the system start-up and to determine the corrective action if a fault occurs.
Appendix B.1 The IR Module Does Not Respond to Gas
1. Repeat calibration procedure.
2. Remove the gas and wait for the timer to completely count down.
3. Apply 50%LEL and verify that the sensor sees 50% LEL gas after calibration.
4. If the sensor still does not see gas, power cycle the unit and repeat calibration.
Appendix B.2 T he Module Displays “Starting” For More Than 1 Hour
1. Make sure the sensor is placed in an ambient room temperature environment.
2. Power cycle the sensor.
3. Ensure that the sensor is not exposed to methane during warm-up.
Appendix B.2.1 The Module Does Not Displa y the Correct %LEL
1. Power cycle the unit.
2. Recalibrate the sensor.
Appendix B.2.2 The Display Shows ‘F’ – Lamp Fail or Sensor Missing
1. Power down the unit.
2. Open the enclosure and unplug the sensor assembly from the transmitter board.
3. Plug the sensor back into the transmitter board carefully and ensure a secure fit.
4. Check all other connections.
5. Power up the unit.
Appendix B.2.3 T he Module Shows “***Calibration Required***”
Calibrate the module.
Appendix B.2.4 T he Display Shows ‘H’ or ‘L’
The local high or low alarm is active.
Appendix B.2.5 The Displa y Show s ‘W ’ – Radio Frequency Interference Detected
1. If showing intermittent “W” remove source of interference
2. If showing constant “W” contact technical support
3. If “W” present continuously for 3 minutes, then a fault caption will be activated. Fault will clear itself if noise has gone away for 2 minutes.
Appendix B.2.6 T he Display Shows “M” – Not Calibrated
Calibrate the module.
Appendix B.2.7 T he Display Shows “C” – Calibration Mode
Complete calibration and exit to operating mode.
Page 33 of 60
Model 5100-28-IT Combustible Gas Sensor Module
Appendix B.2.8 T he Display Shows “S” – Sentry Connection
Check connections with Sentry Controller
Appendix B.2.9 The Displa y Shows Failure Codes 001-006
If the display shows any of the failure codes below the sensor assembly is defective, contact technical support.
FAIL 001 – Temperature signal from the sensor failure
FAIL 002 – Sensor detector or reference signal is lower than expected
FAIL 003
– Both the reference and detector signal is clipping
FAIL 004
– Detector signal failure
FAIL 005 – Reference signal failure
FAIL 006 – An internal error has occurred
Appendix B.3 Diagnostic LEDs
LED 1 = 1 Hz Heartbeat normal, 2 Hz Panic Error
2 = Computation process
3 = 1 Hz Heartbeat normal
4 = HART or Sentry comms activity
Page 34 of 60
APPENDIX C.
SPECIFICATIONS
Sensor
Output
Input
Power
Power consumption:
Input voltage:
Input current:
Operating Range
Ambient Temperature Range: *
Relative Humidity:
Enclosure
Material - Aluminum:
Material - Stainless Steel:
Dimensions (H x W x D):
Weight:
Housing:
Hazardous Area Approval:
Approvals
Type:
Dual Range:
Repeatability:
Response time:
Accuracy: *
Zero Drift:
Sensor Life:
Display:
Relays Option:
Signal Output:
Remote Alarm Reset:
Factory Mutual (FM)
Performance:
Hazardous Locations:
UL:
SIL-2 Certified:
HART Compliant:
ABS:
CQST
ATEX:
Model 5100-28-IT Combustible Gas Sensor Module
Infrared, Dual Wavelength
Default: 0-100% LEL Methane
Optional Setting: 0-100% by Volume Methane
+/-1% LEL
< 11 sec to 90% full scale
+/- 1% for 0-50% LEL range
+/- 2% for 51-100% LEL range
+/- 1% full scale per month @ 20°C (68°F) ambient,
(max +/- 3% full scale per year)
Typically >5 years
Fixed and Scrolling LED
Trouble (SPDT Form C, .25 Amp@250V AC)
Alarm, Warning (5 Amp@250V AC)
Sentry digital bus (Not available with HART option)
Analog 4-20 mA
3-wire Non-Isolated
4-wire Isolated
Serial RS-485 Modbus RTU
HART
Normally open digital input
3 watts
24V DC nominal: 10-30V DC
200mA @ 24V DC
-40° to 167°F (-40° to 75°C)
0-99% (Non-condensing)
Polyester powder-coated, sand-cast, copper-free aluminum
316 SS
(A1 & A2)
(S1 & S2)
(A1 & A2)
(S1 & S2)
7.8 x 5.7 x 3.9 in. (19.8 x 14.5 x 9.9 cm)
7.5 x 4.4 x 4.9 in. (19 x 11 x 12 cm)
3.4 lb. (1.5 Kg)
7.2 lb. (3.3 Kg)
NEMA 4X and NEMA 7
Explosion proof, Class 1, Div. I, Groups C, D Class I, Zone 1
Group IIC, IP66, IP65, NEMA 4X, T6
TA = - 40°C to 85°C II2 GD, Ex d IIC
Class 1, Division 1, Groups B, C, D
FM Standard 6310 Performance Approval for fixed-based Combustible Gas Detectors (ANSI/ISA
– 12.13.01)
FM Standards 3100, 3600, 3615, 3810
UL Standard 508A, 2075 (Methane Tested)
Certified by Lloyds Register (IEC 61508)
HART7 Approved
Product Design Assessment
II 2 G, Ex d IIB+H2 T6 Gb, Ta = -40 o C to 75 o C
Page 35 of 60
Modbus
Warranty
Baud:
Parity:
Stop bit:
Data bits:
Flow Control:
Memory Map:
Limited Warranty:
Specifications subject to change without notice
* FM (-20 o to 60 o C)
Model 5100-28-IT Combustible Gas Sensor Module
38400 (Adjustable 2400
– 38400)
None
1
8
None
Appendix I
2 years
Page 36 of 60
Model 5100-28-IT Combustible Gas Sensor Module
APPENDIX D.
MODEL NUMBERS, PARTS LIST & PARAMETERS
Sensor Module
Ordering Information: The following part number is essential in selection of the correct product. Please build up the desired part by inserting the code for each element into the appropriate space (i.e. 5100-12-IT-S1-02-00-0).
Model Enclosure
Relay/Connection
Output
Gas Type
Approvals
5100-28-IT
- A1 = AL ¾” NPT - 01 = No Relays (std) - 01 = Methane (Std) - 0 = Standard
- A2 = AL M20x1.5
- 02 = Relays Option - 03 = Propane * ** - 2 = Conformal - 1 = Remote
- S1 = SS ¾” NPT
- S2 = SS M20x1.5
- 05 = HART Option Transmitter
- 3 = Severe Service
Environment
- 0 = None - C = ATEX
Sensor
* ** Use propane as calibration gas
Options
5311-00 Rainshield
5311-02 Rainshield with calibration port
Calibration Items
1250-01
1256-01
1260-00
1260-02
1260-28
5358-01
5358-50
5360-00
Gas Sensor Calibrator Kit
Regulator Type A Calibrator
Gas Cylinder
– Air (Type A), 105 liters
Gas Cylinder
– Methane 50% LEL, (type A), 105 liters
Gas Cylinder
– Propane 50% LEL, (type A)
Calibration Adapter - Direct, Standard
Calibration/Configuration Magnetic Tool
Remote Calibration Fitting
Spare Parts
5200-28-IT-SS
5200-28-IT-Al
SPL21806
SPL21810
SPL21823
SPL21825
SPL21829
SPL21876
22078
22121
45236
IR Sensor, assy
IR Sensor, assy for 5100-28-IT
Transmitter
Enclosure, Transmitter, AL
Enclosure, Transmitter, SS
Termination Board no Relays
Termination Board with Relays
HART Termination Board
SS Magnetic Wand
AL Magnetic Wand
Ferrite Choke
Factory Default Settings
Output = 3-wire 4-20mA source
Range = 0-100% LEL
Warning = 20% LEL
Alarm = 60% LEL
Calibration = 50% LEL Methane
Modbus = 2-wire Half Duplex at 38,400 BAUD
Page 37 of 60
Model 5100-28-IT Combustible Gas Sensor Module
APPENDIX E.
LIMITED WARRENTY
Sierra Monitor Corporation warrants its products to be free from defects in workmanship or material under normal use and service for two years after date of shipment. SMC will repair or replace without charge any equipment found to be defective during the warranty period. Final determination of the nature and responsibility for defective or damaged equipment will be made by SMC personnel.
All warranties hereunder are contingent upon proper use in the application for which the product was intended and do not cover products which have been modified or repaired without SMC approval or which have been subjected to accident, improper maintenance, installation or application, or on which original identification marks have been removed or altered. This Limited Warranty also will not apply to interconnecting cables or wires, consumables (i.e. calibration gases, batteries, sensors), nor to any damage resulting from battery leakage.
In all cases SMC’s responsibility and liability under this warranty shall be limited to the cost of the equipment. The purchaser must obtain shipping instructions for the prepaid return of any item under this warranty provision and compliance with such instruction shall be a condition of this warranty.
Except for the express warranty stated above, SMC disclaims all warranties with regard to the products sold hereunder including all implied warranties of merchantability and fitness and the express warranties stated herein are in lieu of all obligations or liabilities on the part of SMC for damages including, but not limited to, consequential damages arising out of/or in connection with the use or performance of the product.
Page 38 of 60
APPENDIX F.
RFI NOISE SUPPRESSOR
Model 5100-28-IT Combustible Gas Sensor Module
Appendix F.1 Installation Instructions
NOTE: The Noise Suppressor is required to be installed in all Model 5100-28 applications. If gas sensor modules are daisy chained, both sets of wire require suppressors.
For applications with single home run wiring (no daisy chain board):
1. Pull applicable wiring into the enclosure per normal field pre-wire procedure.
2. Connect the three conductors to the transmitter (generally pins 1, 2, 3 on P2), leaving a service loop to allow installation and removal of the transmitter.
3. Place the suppressor over the three wires and snap it closed so the wires run through the center hole.
4. Slide the suppressor into the enclosure as close to the entry hub as possible (to allow working space).
5. Install the transmitter into the enclosure per standard module instructions.
For applications with daisy chain board (for multi-drop wiring):
1. Pull the applicable pair of three conductor cables or wires into the enclosure per normal field pre-wire procedure.
2. Connect each set of three conductors to the daisy chain board leaving service loops to allow installation and removal of the transmitter.
3. Place on suppressor over each set of three wires and snap it closed so the wires run through the center hole.
4. Slide the suppressors into the enclosure as close to the entry hub as possible (to allow working space).
5. Install the transmitter into the enclosure per standard module instructions.
Page 39 of 60
Appendix F.2 Suppressor Drawings
Exploded View of RFI Noise Suppressor
Model 5100-28-IT Combustible Gas Sensor Module
Sensor Housing with Suppressor
Figure 22: RFI Noise Suppressor Drawings
Page 40 of 60
Model 5100-28-IT Combustible Gas Sensor Module
APPENDIX G.
REMOTE SENSOR OPTION
NOTE: Drawing using Stainless Steel enclosure available from Sierra Monitor.
Figure 23: Remote Sensor Option Drawing
Unless otherwise specified, NOTE the following:
•
Provide access for sensor replacement during installation.
•
For field upgrade, relocate sensor from 5100-28-IT-A1/A2 to 5394-50 as shown.
•
Use Alpha wire #5388C or SMC P/N 53052. Connect drain wire (from cable) to position 8 (yellow wire and drain wire in same connection). Color by color.
•
Terminal blocks float in each enclosure.
•
The remote sensor assembly is meant to be supported by rigid conduit.
•
Calibrate post installation.
Typical Wire Connections at all Terminations:
Black
White
Red
Green
Color Position
1
2
3
4
Color
Brown
Blue
Orange
Yellow + Drain Wire
Position
5
6
7
8
Page 41 of 60
APPENDIX H.
HART
Model 5100-28-IT Combustible Gas Sensor Module
Figure 24: HART
Page 42 of 60
Model 5100-28-IT Combustible Gas Sensor Module
Figure 25: 4-20 mA Circuits Types 5100-28-IT – Connections - HART
Page 43 of 60
Model 5100-28-IT Combustible Gas Sensor Module
HART Protocol Menu
HART (Highway Addressable Remote Transducer) Protocol is the global standard for sending and receiving digital information across analog wires between smart devices and control or monitoring system. HART is a bidirectional communication protocol that provides data access between intelligent field instruments and host systems. A host can be any software application from technician's hand-held device or laptop to a plant's process control, asset management, safety or other system using any control platform. The HART protocol used on this gas sensor module has been developed to comply fully with the HART specifications outlined by the HART
Communication Foundation (HCF).
If the HART interface board has been provided with the gas sensor module, then HART will operate via the 4-20 mA interface automatically. While no specific handheld device is necessary for HART operation, the gas sensor module does comply with the HART standard so any handheld or PC-based HCF certified tool will work.
The information below provides the operator instructions on connecting HART and the HART Protocol Menu.
Common Practice Commands
The following Common Practice comma nds are implemented.
Command
Number
38
Byte
Number
N/A
48
48
48
48
48
48
0
1
2
3
4
5
Description
Reset Configuration Changed Flag
Returns Module Status
Module State - In Calibration (0x10),
(0x30 = cal passed)
Module State - Trouble
(0x50 = cal failed)
(0x08)
Module State - Warming (0x04)
Module State - RUN (ALARM) (0x02)
Module State - RUN (0x01)
Returns Alarm Relay Status:
0x01 = Alarm Relay ON
0x02 = Warning Relay ON
0x03 = Both Relays ON
Returns Trouble Status (non-zero value indicates Trouble)
Returns maximum gas value
Returns gas value used during calibration
Returns IT-Series Model Number
0x28 = 5100-IT-28
Device Specific Commands
The Device Specific commands are used for accessing the unique features of the 5100-IT Series of gas sensor modules.
A response code of 0 indicates SUCCESS. This applies to all commands. As per HART specification, all command responses will have a response code and status byte, plus any command specific data bytes as indicated in the following tables.
Page 44 of 60
Model 5100-28-IT Combustible Gas Sensor Module
Device Specific Commands Summary
Command
Number
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
150
Description
Key Press
Set Alarm Level
Set Warning Level
Set Alarm Relay Action
Set Warning Relay Action
Reset Alarms
Abort Calibration
Set Calibration Gas Level
Apply ZERO Gas
Apply SPAN Gas
RESERVED
Force Gas Value
Reset Force Gas Value
Read MODBUS RTU Register
Set Transducer Serial Number
Set Calibration Mode output current
Set Trouble Mode output current
RESERVED
RESERVED
Write MODBUS RTU Register
Command 130: Key Press
This command mimics the front plate key inputs.
Request Data Bytes:
Byte Format Description
0 Unsigned-8
1=Enter
2=Down
4=Up
8=Menu
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns same value as passed
Command 131: Set Alarm Level
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 Alarm level, range 0 to 60. Default is 60.
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Alarm Level.
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Model 5100-28-IT Combustible Gas Sensor Module
Command 132: Set Warning Level
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 Warning level, range 0 to 60. Default is 20.
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Warning Level.
Command 133: Set Alarm Relay Action
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 0=Latching (default)
2=Non-Latching
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Alarm Relay Action value
Command 134: Set Warning Relay Action
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 0=Latching
2=Non-Latching (default)
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Warning Relay Action value
Command 135: Reset Alarms
This command will reset any alarm relays that have been latched, providing the alarm condition is no longer present on the sensor.
Request Data Bytes:
Command Specific Response Data Bytes:
None
None
Command 136: Abort Calibration
This command aborts the calibration procedure.
Request Data Bytes:
Command Specific Response Data Bytes:
None
None
Command 137: Set Calibration Gas Level
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 Calibration Gas Level, range 0 to 100
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Calibration Gas Level
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Model 5100-28-IT Combustible Gas Sensor Module
Command 138: Apply ZERO Gas
This command will signal the module to accept the present sensor output to as the ZERO gas condition.
Request Data Bytes: None
Command Specific Response Data Bytes: None
Command 139: Apply SPAN Gas
This command will signal the module to accept the present sensor output to as the SPAN gas condition.
Request Data Bytes:
Command Specific Response Data Bytes:
None
None
Command 141: Force Gas Value
Request Data Bytes:
Byte
0
Format Description
Unsigned-8 Sets the Force Gas Value, range 0 to 100
Command Specific Response Data Bytes:
Byte
0
Format Description
Unsigned-8 Returns new Force Gas Value
Command 142: Reset Force Gas Value
This command will signal the module to set the Force Gas Value to 0.
Request Data Bytes:
Command Specific Response Data Bytes:
None
None
Command 143: Read MODBUS RTU Register
This command allows the reading of sensor module data as defined in the MODBUS RTU register map.
Request Data Bytes:
Byte
0-1
Format
Unsigned-16
Description
Address of Requested Modbus Register
40001 = lowest address
65535 = highest address
Command Specific Response Data Bytes:
Byte
0-1
Format Description
Unsigned-16 Returns contents of selected Modbus Register
Command 144: Set Transducer Serial Number
This command allows user to add a device specific serial number, if required. This is different from the serial number assigned by the Manufacturer.
Request Data Bytes:
Byte
0-2
Format
Unsigned-24
Command Specific Response Data Bytes:
Serial Number
Byte
0-2
Description
Format Description
Unsigned-16 Returns new Serial Number
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Model 5100-28-IT Combustible Gas Sensor Module
Command 145: Set Calibration Mode output current
Request Data Bytes:
Byte
0-1
Format
Unsigned-16
Description
Current output required during calibration, in micro-amperes
Command Specific Response Data Bytes:
Byte
0-1
Format Description
Unsigned-16 Returns new Calibration current value
Command 146: Set Trouble Mode output current
Request Data Bytes:
Byte
0-1
Format
Unsigned-16
Description
Current output required to indicate Trouble, in micro-amperes
Command Specific Response Data Bytes:
Byte
0-1
Format Description
Unsigned-16 Returns new Trouble current value
Command 150: Write MODBUS RTU Register
This command allows the writing of sensor module data as defined in the MODBUS RTU register map.
Request Data Bytes:
Byte
0-1
Format
Unsigned-16
2-3
Command Specific Response Data Bytes:
Description
Address of Designated Modbus Register
40001 = lowest address
65535 = highest address
Unsigned-16 Data for Designated Modbus Register
Byte
0-1
Format Description
Unsigned-16 Returns MODBUS register value
Version 1.20 Updated 30 January 2012
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Model 5100-28-IT Combustible Gas Sensor Module
40023
40024
40025
40026
40027
40028
40029
40030
40031
40032
40033
40034
40035
40036
40037
40038
40039
40040
40041
40042
40043
40044
40045
40046
40047
40048
APPENDIX I.
MODBUS MEMORY MAP
Register
40001
40002
40003
40004
40005
40006
40007
40008
40009
40010
40011
40012
40013
40014
40015
40016
40017
40018
40019
40020
40021
40022
Description
Concentration
Temperature
Alarm Relay
Warning Relay
Warning Setpoint
Alarm Setpoint
CCC detail
Software Revision U
Software Revision L
Modbus Map Revision
Trouble Bits
Trouble
Alarm Immediate
Warning Immediate
Serial Number U
Serial Number L
Run time U
Run time L
Gas (MAX) value
Model
Range
Units
40049
40050
Module Status
Gas Scale
Cal Concentration level
Calibration due, in days
Calibration Count
Display Gas Output
Gas (MIN) value
Alarm Time U
Alarm Time L
Warning Time U
Warning Time L
Trouble Time U
Trouble Time L
Max Gas Time U
Max Gas Time L
Min Gas Time U
Min Gas Time L
Rotary Switch
Restart Count
Alarm Relay Action Setup
Warning Relay Action Setup
4-20mA CalibOut Value
4-20mA TroubleOut Value
Gas Factor
Force Value
Module Number
Command Register
Last command executed
Read/
Write
R
R
Comments
Gas concentration multiplied by Gas Scale (e.g. 209 = 20.9%)
Temperature in degrees Celcius scaled by a factor of 10
Boolean indicating the Alarm relay status (0 = No Alarm, 1 - (High) Alarm).
R/W Clearing bit will reset alarm.
R/W Boolean indicating the Warning relay status (0 = No Alarm, 1 - Warning Alarm). Clearing bit will reset alarm.
R/W Warning Alarm set point, used for activating Low Alarm multiplied by Gas Scale
R
R
R
R
R/W Alarm set point, used for activating High Alarm multiplied by Gas Scale
R e.g. 0001, 0007, etc
R e.g. 201 denotes version 2.01
R
R
R e.g. version aA is denoted by 0x6141 e.g. version 2 is denoted as v2 = 0x7602
0 = no trouble
1 for any trouble, 0 = no trouble
Like 40003, but never latched
Like 40004, but never latched
Serial Number - 24 bits (presently set to Random ID)
R
R
RW
R
R
R
In seconds
In seconds
Gas concentration multiplied by Gas Scale
Read as 51028 for IR, 51002 for Cat Bead, 51005 for TOXIC H2S etc.
RW 1 = %LEL, 2 = %VOL
A bit is defined for each of the following states:
(no bit set also means some sort of trouble)
Module State - In Calibration (0x40) = cal failed
R
Module State - In Calibration (0x20) = cal passed
Module State - In Calibration (0x10)
Module State - Trouble (0x08)
Module State - Warming (0x04)
Module State - RUN (ALARM) (0x02)
Module State - RUN (0x01)
R
R
R
R
R
R
R
R
R
R
R
R
R Value like 1, 10 or 100
R/W Gas concentration value used during calibration, multiplied by Gas Scale
R
R
Gets reset to 365 / 180 if cal successful, Less then 0 = calibration due
Counter increments if cal successful (0 = not calibrated)
Gas value seen on display (i.e. useful during calibration)
Minimum gas value multiplied by Gas Scale
In seconds
In seconds
In seconds
In seconds
In seconds
R
R
Module address (If value < 16, the value reflects position of rotary switch)
Restart count
RW Alarm Relay Action Setup - Latch/Sentry/Non-latch
RW Warning Relay Action Setup - Latch/Sentry/Non-latch
R
R
RW Applies only to -02
RW
RW
0 indicates command failed, 1 = passed, supported commands:
Lock keys = 101
Unlock keys = 102
Abort calibration = 103
RW
Apply zero gas = 104
Apply span gas = 105
Ack alarms = 106
Reset sensor = 107
Clear mem = 108
Speed up startup = 109
Clear eeprom = 110
Force address disp= 111
Clear address disp= 112
R Displays last executed command from register 40049
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APPENDIX J.
FM APPROVAL
Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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APPENDIX K.
SIL-2 APPROVAL CERTIFICATE
Model 5100-28-IT Combustible Gas Sensor Module
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APPENDIX L.
ATEX CERTIFICATE
Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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APPENDIX M.
IECEX CERTIFICATE
Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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Model 5100-28-IT Combustible Gas Sensor Module
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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Key Features
- Infrared absorption technology for accurate and reliable gas detection
- Fast response time of less than 18 seconds
- High accuracy of +/- 3% for 0-100% LEL range
- Versatile operation modes including Sentry Interface, Modbus, Analog, Remote Sensor, Hart Connection, and Remote Alarm Reset
- Optional integral relays for local alarm or control
- Durable and weather-resistant enclosure for harsh environments
Related manuals
Frequently Answers and Questions
What is the input voltage range for the sensor?
What is the ambient temperature range the sensor can operate in?
What is the relative humidity range the sensor can operate in?
Does the sensor have FM approval?
Is the sensor suitable for outdoor use?
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