General Monitors TA102A Instruction Manual
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General Monitors TA102A Instruction Manual

Zero two series trip amplifier module for combustible gas applications
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Model TA102A
Zero Two Series Trip Amplifier
Module For Combustible Gas
Applications
The information and technical data disclosed in
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized in writing by General
Monitors.
Instruction Manual
11/04
General Monitors reserves the right to change
published specifications and designs without
prior notice.
Part No.
MANTA102A-EU
Revision
M/11-04

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Summary of Contents for General Monitors TA102A

  • Page 1 General Monitors. Instruction Manual 11/04 General Monitors reserves the right to change published specifications and designs without prior notice. Part No. MANTA102A-EU Revision...

  • Page 2: Warnings

    Model TA102A Warranty Statement General Monitors warrants the Model TA102A to be free from defects in workmanship or material under normal use and service within two (2) years from the date of shipment. General Monitors will repair or replace without charge any such equipment found to be defective during the warranty period.
  • Page 3 E C Declaration of Conformity in accordance with EC Directives We at General Monitors Ireland Ltd., Ballybrit Business Park, Galway, Republic of Ireland, hereby declare that the equipment described below, both in its basic design and construction, and in the version or versions...

  • Page 4: System Integrity Verification

    Model TA102A System Integrity Verification General Monitors’ mission is to benefit society by providing solutions through industry- leading safety products, services and systems that save lives and protect capital resources from the dangers of hazardous flames, gases and vapors. The safety products you have purchased should be handled carefully and installed, calibrated and maintained in accordance with the respective product instruction manual.
  • Page 5 Model TA102A Periodic System Verification The following system verifications should be performed at least annually: Verify wiring, terminal connections and stability of mounting for all integral safety equipment including, but not limited to: • Power supplies • Control modules • Field detection devices •...

  • Page 6: Quick-Start Guide

    The contents should be carefully removed and checked against the packing slip. If any damage has occurred or if there is any discrepancy in the order, notify General Monitors as soon as possible. All subsequent correspondence with General Monitors must specify the equipment part and serial numbers.
  • Page 7 Model TA102A Quick-Start Guide Control Module Installation A rack or panel mounted chassis will be required when installing any Zero Two Series Module. These chassis’ should be mounted in non-hazardous, weather-protected locations and should be subjected to minimal shock and vibrations. The rack and panel mounted chassis are available in 4, 8, and 16 channel sizes.
  • Page 8 Model TA102A Quick-Start Guide Rear Terminal Connections All wire connections to the Model TA102A are made to the terminal block located at the rear of the chassis. The terminal block accepts 16 AWG to 20 AWG, stranded or solid core wire.
  • Page 9 Model TA102A Quick-Start Guide 1.5.1 A2 Alarm The terminal designations for the A2 alarm outputs are: LABEL TERM DESCRIPTION A2-C1 Relay Common (1 & 2) A2-1 Relay Contact A2-2 Relay Contact A2-3 Relay Contact A2-4 Relay Contact A2-C2 Relay Common (3 & 4)
  • Page 10 Model TA102A Quick-Start Guide The table below refers to the proper open and closed A1 alarm relay contacts while the unit is on power: User Selected Normally Normally Relay State Open Closed Normally A1-C1 & A1-1, A1-C1 & A1-2, Energized A1-C2 &...
  • Page 11 Model TA102A Quick-Start Guide 1.5.4 Other Open Collector Outputs The terminal designation for the Unaccept and the Discrete Calibration / Inhibit Mode outputs are: Label Term Description UA-OC Open Collector Output CAL/OC CAL-Inhibit Mode Output Figure 9 – Terminal Designations for...
  • Page 12 30d,z DC Common Figure 11 – Terminal Designations for Field Device NOTE - Only 1 Field Device may be connected to a Model TA102A. Figure 12 illustrates the Field Device/Controller connections. Figure 12 – Field Device/Controller Connections 1.5.6 Card Test Switch...
  • Page 13 Model TA102A Quick-Start Guide Figure 14 is a block diagram that shows the switch connections for the Card Test feature. Figure 14 – Switch Connections for Card Test The Card Test Input is provided so that the user can access the Card Test feature remotely.
  • Page 14 Model TA102A Quick-Start Guide Applying Power Zero Two Series Modules do not have an ON/OFF power switch. Each module in the Zero Two Series operates from 24Vdc. Current requirements will vary according to the number and type of modules in the system, as well as the number and type of field devices.
  • Page 15 Model TA102A NOTE - The instrument is now ready to operate! Please consult the manual for more information on the instrument’s many features. NOTE - If you have any problems in the setup or testing of the detector, please refer to the “Troubleshooting Section”, or call the factory direct.

  • Page 16: Table Of Contents

    Model TA102A Quick-Start Guide Table of Contents Warranty Statement ............................ i Warnings ............................ i System Integrity Verification........................iii Quick-Start Guide......................... v 1.1 Upon Receipt of Equipment ..................v 1.2 Sensor Location Considerations ................v 1.3 Sensor Poisons ......................v 1.4 Control Module Installation..................vi 1.5 Rear Terminal Connections..................vii...
  • Page 17 Model TA102A 3.7 Interconnecting cable guidelines ................17 Operation 18 4.1 General Maintenance ..................... 18 4.2 Electrical Inputs ...................... 18 4.3 Electrical Outputs ....................18 4.4 Accepting Alarm Conditions ................... 19 4.5 Resetting Latched Alarms ..................20 4.6 CAL Open Collector ....................20 4.7 Card Test Feature ....................
  • Page 18 6.6.4 Operating Humidity Range ................48 6.7 Engineering Specifications ..................49 6.7.1 Zero Two System ..................49 6.7.2 TA102A Control Module ................49 Volatile Liquids and Solvents ..................50 6.9 Engineering & Technical Drawings ................ 52 6.9.1 Outline & Terminal Connections..............52 6.9.2 Final Assembly ....................
  • Page 19 Figure 15 – Terminal Designations for Analog Output ................xii Figure 16 – Analog Signal Connections ....................xii Figure 17 – Rear Power Connections ...................... xiii Figure 18 – Model TA102A..........................6 Figure 19 – Control Module Coding Strip ....................9 Figure 20 – Wire Strip Length........................9 Figure 21 –...

  • Page 20: Introduction

    Model TA102A Figure 58 – Card Test Ramp Time ......................32 Figure 59 – Alarm Output During A Card Test ..................32 Figure 60 – Password Enabled/Disabled Option..................33 Figure 61 – Entering A New Password......................34 Figure 62 – Catalytic Sensor Diagram.......................36 Figure 63 – S4100C Smart Sensor......................37 Figure 64 –...

  • Page 21: General Description

    Zero Two Series. It is distinguished from the other modules by its blue border and “TA102A" in the upper right corner of the front panel. The Model TA102A is designed for use in non-hazardous environments.

  • Page 22: Features & Benefits

    Allows the user to insert or remove a module while power is applied to the system, without damage to any of the components in the system. Applications The General Monitors Model TA102A is a Combustible Gas Control Module designed for Zero Two Series Applications. Below is a partial list of applications: • Refineries •...

  • Page 23: Upon Receipt Of Equipment

    If any damage has occurred or if there is any discrepancy in the order, notify General Monitors as soon as possible. All subsequent correspondence with General Monitors must specify the equipment part and serial numbers.

  • Page 24: Rear Terminal Connections

    FSD. This deviation will disappear following removal of the field. Functionality is otherwise unaffected. Rear Terminal Connections All wire connections to the Model TA102A are made to the terminal block located at the rear of the chassis. The terminal block accepts 16 AWG to 20 AWG (1.5mm 0.75mm ), stranded or solid core wire.

  • Page 25: A2 Alarm

    CAUTION - Contact with PC Board components should be avoided in order to prevent damage by static electricity. To connect wires to the terminal block on the Model TA102A, loosen the desired screw, insert the stripped end of the wire and tighten. (Alternate connector styles available –...

  • Page 26: A1 Alarm

    Model TA102A User Selected Normally Normally Relay State Open Closed Normally A2-C1 & A2-1, A2-C1 & A2-2, Energized A2-C2 & A2-4 A2-C2 & A2-3 Normally A2-C1 & A2-2, A2-C1 & A2-1, De-Energized A2-C2 & A2-3 A2-C2 & A2-4 Figure 23 – A2 Alarm Relay Contacts 3.3.2 A1 Alarm...

  • Page 27: Other Open Collector Outputs

    Model TA102A The Fault outputs are SPDT relays, 1 open collector output (F-OC) that follows the logic of the relays and 1 open collector output (FUA) dedicated to new fault indications. NOTE - If the Backward Compatible configuration is ordered, the FUA will not be present (pin 32d will be for +24VDC input).

  • Page 28: Field Device Connections

    The terminal designations for the Field Device connections are: Term Description 26d,z Signal IN (analogue) 28d,z VDC Out (+24VDC) 30d,z DC Common Figure 30 – Terminal Designations for the Field Device connections NOTE - Only 1 sensor may be connected to a Model TA102A.

  • Page 29: Card Test Switch

    Model TA102A Figure 31 illustrates the Field Device/Controller connections. Figure 31 – Field Device/Controller Connections 3.3.6 Card Test Switch The terminal designation for the Card Test Input is: Label Term Description Switch Connection Figure 32 – Terminal Designation for Card Test Input Figure 33 is a block diagram that shows the switch connections for the Card Test feature.

  • Page 30: Figure 34 - Terminal Designations For Analog Output

    Model TA102A The Card Test Input is provided so that the user can access the Card Test feature remotely. One end of a normally open SPST switch is connected to this termination. The other end is connected to system common. To activate the feature, simply press and hold the switch for as long as the test time is to be run.

  • Page 31: Sensor Location Considerations

    These are not true sensor poisons, but reduce sensor response. Other damaging materials, which attack the sensor physically, include mineral acids and caustic vapors. The presence of such poisons and vapors does not exclude the use of General Monitors Catalytic Bead Sensors. A careful analysis of ambient conditions should be undertaken and the customer should be aware that sensor calibration might need to occur at more frequent intervals.

  • Page 32: Applying Power

    Greater separations are required where long parallel cable runs are unavoidable. Avoid running instrument cable trenches close to lightning conductor earth pits. General Monitors do not recommend the use of cable shoes or crimps on any junction box or housing wiring terminals. Poor crimping can cause bad connection when unit experiences temperature variations.

  • Page 33: Operation

    General Maintenance (Also refer to leaflet T023 of BG Chemle) Once the Model TA102A has been installed, very little maintenance is required other than periodic checks to verify the integrity of the system. • The user should evaluate conditions at the sensor site to determine how frequent calibration checks should be performed.

  • Page 34: Accepting Alarm Conditions

    During a fault the display will indicate a fault code (“F” followed by a digit). If the sensor attached to the Model TA102A is seeing gas in excess of 100% of full scale, this output will generate a signal between 20 and 21.7mA (not proportional). An over range condition is indicated by a flashing digital display reading full-scale (99).

  • Page 35: Resetting Latched Alarms

    NOTE - Latched alarm conditions cannot be Reset until they have been Accepted (see Section 4.4). Whenever the Model TA102A receives a 20mA signal, or higher, the front panel alarm LEDs, the digital display and the rear terminal alarm outputs will latch until the input signal drops below the alarm set points and the Reset Button is pressed (twice if A1 or A2 have latching outputs).

  • Page 36: Card Test Feature

    Card Test. This can be treated as a functional test of a Zero Two System Fault Diagnostics In addition to the Fault LED on the front panel, the Model TA102A provides a fault code on the digital display whenever a fault condition occurs. The Fault Codes that can appear on the digital display are summarized below.
  • Page 37 Model TA102A In each of the fault cases listed on this page, when the fault occurs the FUA output is activated. Pressing the ACCEPT button on the Facilities Module (FM002A) will acknowledge the fault, de-activate the FUA output and the fault LED will stop flashing...

  • Page 38: User Interfaces

    Types of User Interfaces User interfaces are provided so that the operator may interpret and direct the Model TA102A in the performance of its various functions. User interfaces (Figure 38) consist of a digital display, status indicators and a Mode/Select switch.

  • Page 39: Setup & Setup Check Modes

    • The Setup Check Mode allows the user to view the operating parameters of the Model TA102A, whereas the Setup Mode allows the user to change the operating parameters of the Model TA102A. • Entering the optional Password is only available in the Setup Mode.

  • Page 40: Entering The Password

    Model TA102A TA102A 0 - 100% LEL READY SETUP LED SETUP FLASHING for SETUP CHECK MODE STEADY for SETUP MODE MODE/ SELECT MODE/SELECT GENERAL MONITORS SWITCH Figure 47 – Entering Setup and Setup Check Modes 5.4.1 Entering the Password This option applies to the Setup Mode only: •...

  • Page 41: Inhibit Mode

    In is displayed, will cause the unit to enter the Inhibit mode by inhibiting the alarm outputs. As the unit enters the Inhibit mode, the Model TA102A will automatically return to normal operation. If it is desired to enter the Setup Mode, do not press the Mode/Select switch for the five seconds that In is displayed.

  • Page 42: A2 Alarm Options

    Model TA102A 5.4.3 A2 Alarm Options Next, the A2 LED will be flashing while the Energized/De-Energized option is displayed (Figure 50). The display will indicate the current selection, (En or dE). Press the Mode/Select Switch to toggle the selection. De-Energized is the factory default for this selection.

  • Page 43: Figure 52 - A2 Alarm Set Point Option

    Model TA102A The last A2 alarm option to appear on the display will be the alarm set point (trip level). If this level is reached or exceeded the A2 alarm outputs will activate. The display (Figure 52) will indicate the current A2 alarm set point (10 to 60 in increments of 5).

  • Page 44: A1 Alarm Options

    Model TA102A 5.4.4 A1 Alarm Options Next, the A1 LED will be flashing while the Energized/De-energized option is displayed (Figure 53). The display will indicate the current selection, (En or dE). Press the Mode/Select Switch to toggle the selection. De-Energized is the factory default for this selection.

  • Page 45: Fault/Inhibit Option

    Ac or nA (Figure 57). An Ac selection specifies that the Model TA102A will activate the Fault circuit while the unit is in the Inhibit Mode. A nA selection specifies that the Model TA102A will not activate its Fault circuit when the unit is placed in the Inhibit Mode.

  • Page 46: Figure 56 - Fault Inhibit Option

    Model TA102A TA102A TA102A 0 - 100% LEL 0 - 100% LEL READY READY FLASHING FAULT LED FAULT FAULT SETUP LED SETUP SETUP FLASHING for SETUP CHECK MODE, STEADY FOR SETUP MODE MODE/ MODE/ SELECT SELECT GENERAL GENERAL MONITORS MONITORS Figure 56 –...

  • Page 47: Figure 58 - Card Test Ramp Time

    Model TA102A TA102A TA102A 0 - 100% LEL 0 - 100% LEL READY READY SETUP MODE SETUP SETUP FLASHING for SETUP CHECK MODE, STEADY FOR SETUP MODE MODE/ MODE/ SELECT SELECT GENERAL GENERAL MONITORS MONITORS Figure 58 – Card Test Ramp Time Next, the display will indicate the alarm output option during a Card Test as either Ac, active or nA, not active.

  • Page 48: Figure 60 - Password Enabled/Disabled Option

    Model TA102A 5.4.8 Password Options Once the Card Test options have been selected, the user will either enable or disable the password option (Figure 60). The display will indicate either PE, for enabled or Pd, for disabled. Password Disabled is the factory default for this selection.

  • Page 49: Inhibit Mode

    5 seconds. This sequence will repeat for as long as the unit is in the Inhibit Mode. The Inhibit Mode is provided so that the operation of the Model TA102A can be verified without tripping external devices that are connected to the A1 and A2 alarm outputs.

  • Page 50: Setup Mode Selection Block Diagram

    It is recommended that the operator fill-in the selections in the proper blanks and then use this page as a reference while programming the Model TA102A. The blocks shown below indicate the order of options in the Setup Mode. To the right of each block is a description of the choices that are available for that option.

  • Page 51: Appendix

    6.0 Appendix Principle of Operation General Monitors uses a low temperature catalytic bead to detect the presence of combustible gases and vapors. These gases and vapors are found in many applications. The catalytic bead converts the combustible gases and vapors to heat.

  • Page 52: Applications And Accessories

    Applications and Accessories This chapter provides a description of the types of field devices (Smart Sensors, Point IR Detectors) and the accessories, which can be used with the Model TA102A. 6.2.1 Smart Sensors Generally speaking, General Monitors field devices fall into two categories: •...

  • Page 53: Figure 64 - S4000C Smart Sensor

    Model TA102A Figure 64 – S4000C Smart Sensor The detection elements for the General Monitors Smart Sensors include a variety of catalytic Bead Sensors with different detection ranges and sensor bodies: 11159-1L General Purpose, SST, Sintered Steel Arrestor 11159-2L General Purpose, SST, Hi-Temperature, Sintered Steel Arrestor...

  • Page 54: Figure 65 - Ir2100 Model

    Figure 65 – IR2100 Model 6.2.3 Splash-Guard & TGA-1 General Monitors produces a universal Splash-Guard, P/N 10395-1, that has been designed for use on all General Monitor’s combustible gas and hydrogen sulfide gas sensors (Figure 66). In addition to the Splash-Guard, a Test Gas Applicator (TGA-1) is available for delivering a test gas to remotely located sensors, P/N 10460-2.

  • Page 55: Dust Guard Assembly

    It is easily removed for cleaning and/or replacement of the disposable screen. This General Monitors accessory is specifically designed to prevent dust and particulate matter from reaching the sensor flame arrestor. Such debris can plug the screen and limit the amount of gas reaching the active surface of the sensor.

  • Page 56: Duct Mounting Plates

    Model TA102A 6.2.5 Duct Mounting Plates General Monitors produces a Duct Mounting Plate (P/N 10041-1 and –2. Dash 2 has a sensor mounted from inside of cover) for applications that require the sensor to be mounted in air-conditioning or heating duct. The Duct Mounting Plate is easy to install (Figure 69).

  • Page 57: Figure 70 - Ir2100 Duct Mounting Plate

    Model TA102A Figure 70 – IR2100 Duct Mounting Plate...

  • Page 58: Calibration Equipment

    Model TA102A 6.2.6 Calibration Equipment The Model TA102A uses a Portable Purge Calibrator (Figure 71) or the 3 Liter Chamber (Figure 71), to accomplish calibration. The calibration and calibration check procedures and use of the Portable Purge Calibrator is explained in Sections 5.2 and 5.3.

  • Page 59: Calibration Check Mode

    3. After one or two minutes the display will indicate CC (Calibration Complete). 4. Remove the sensor from the chamber and allow it to see clean air. When the display indicates a few % LEL and then zero (0), the Model TA102A has returned to normal operation.

  • Page 60: Calibration Equipment And Part Numbers

    Model TA102A 6.2.10 Calibration Equipment and Part Numbers 6.2.10.1 Portable Purge Calibrator Assembly: with 50% LEL Methane Gas 1400150-M with 50% LEL Hydrogen Gas 1400150-H with 50% LEL Ammonia Gas 1400150-A with 50% LEL Butadiene Gas 1400150-BD with 50% LEL Butane Gas...

  • Page 61: System Specifications

    6.3.4 Measuring Range 0 to 100% LEL. 6.3.5 Accuracy The accuracy the TA102A is ± 3% LEL/LFL or 10% of the applied gas, whichever is greater, at reference ambient conditions. 6.3.6 Zero Drift (Card & Sensor*) Less than 5% of span, per year.

  • Page 62: Electrical Specifications

    NOTE – GM Smart Sensor has max. supply voltage of 30VDC in order to comply with Approval requirements. 6.5.2 Electrical Classification The Model TA102A is designed for use in non-hazardous environments. 6.5.3 Relay Contact Rating 4A @ 30V RMS/42.4V PK, 3A @ 30VDC resistive. DPDT for A1 & A2, SPDT for Fault.

  • Page 63: Environmental Specifications

    Model TA102A Environmental Specifications 6.6.1 Operating Temperature Range TA102A 0°F to +150°F -18°C to +66°C 6.6.2 Storage Temperature Range TA102A -40°F to +150°F -40°C to +66°C 6.6.3 EMC Susceptibility (EN50082-2 : 1995) 10V/m Max. 6.6.4 Operating Humidity Range 5% to 100% Relative Humidity, non-condensing...

  • Page 64: Engineering Specifications

    The system shall consist of Zero Two Series component modules as manufactured by General Monitors, Lake Forest California, U.S.A. or General Monitors, Galway, Ireland.

  • Page 65: Volatile Liquids And Solvents

    Model TA102A Volatile Liquids and Solvents Volatile liquids and solvents are not supplied by General Monitors. This page provides a listing of volatile liquids and solvents and the respective volumes required (in microliters) to produce a 50% LEL vapor concentration in the 3 Liter Chamber (see Section 6.7).
  • Page 66 Model TA102A The volatile liquids and solvents listed in this section are intended for use in the 3-Liter chamber for calibrating General Monitors Catalytic Sensors. Isopentane......... 99 Isoprene........89 Isopropyl Alcohol ....... 93 Isopropyl Ether ......120 JP-4, Jet Fuel ......183 Laktane ........

  • Page 67: Engineering & Technical Drawings

    Model TA102A Engineering & Technical Drawings 6.9.1 Outline & Terminal Connections Reference Drawing # 11281-1 Figure 75 – Outline & Terminal Connections...

  • Page 68: Final Assembly

    Model TA102A 6.9.2 Final Assembly Reference Drawing # 11280-1 Figure 76 – Final Assembly...

  • Page 69: Zero Two Series Modules

    Model TA102A 6.10 Zero Two Series Modules Model 2602A Zero Two Series Control Module for Combustible Gas Applications Model TA102A Zero Two Series Trip Amplifier Module for Combustible Gas Applications Model TA202A Zero Two Series Trip Amplifier Module for Hydrogen Sulfide Gas Applications...

  • Page 70: Customer Satisfaction Questionnaire

    Republic of Ireland. Thank you for your assistance Client ______________________________________________________________________________ Client Order No. ______________________________________________________________________ General Monitors Sales Order No. _______________________________________________________ (Please tick appropriate box) 1. Was the equipment the correct option? 2. Are sensors correct type and range? 3. Is mechanical assembly good? (everything proper fit and tight) 4.

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