TGM ® 8 GAS Monitor

instruction manual

THIS MANUAL MUST BE CAREFULLY READ BY ALL INDIVIDUALS WHO HAVE OR WILL HAVETHE RESPONSIBILITY FOR INSTALLING, USING OR SERVICING THIS PRODUCT. Like any pieceof complex equipment, this product will perform as designed only if installed, used and serviced in accordancewith the manufacturer’s instructions. OTHERWISE, IT COULD FAIL TO PERFORM AS DESIGNEDAND PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD SUSTAIN SEVEREPERSONAL INJURY OR DEATH.

The warranties made by Mine Safety Appliances Company with respect to these products are voided if theproducts are not installed, used and serviced in accordance with the instructions in this manual. Pleaseprotect yourself and others by following them. We encourage our customers to write or call regarding thisequipment prior to use or for any additional information relative to use or repair.

INSTRUMENT DIVISION 1-800-MSA-INST or FAX (412) 776-9783MSA INTERNATIONAL (412) 967-3228 or FAX (412) 967-3373

© Mine Safety Appliances Company 1996 - All Rights Reserved

Manufactured by

MSA Canada Inc.,TORONTO, ONTARIO M3N 1X8

Distributed by

MINE SAFETY APPLIANCES COMPANYPITTSBURGH, PENNSYLVANIA 15230

REV 3.1 07.06.98 212501

World Wide Product Support Locations

HeadquartersMSA InternationalP.O. Box 426Pittsburgh, PA 15230TEL: (412) 967-3249FAX: (412) 967-3451

AustraliaMSA (Aust.) Pty. Ltd.137 Gilba RoadP.O. Box 43, WentworthvilleSydney. GirraweenNSW 2145, AustraliaTEL: (02) 688-0333FAX: (02) 896-3224

BrazilMSA do Brasil, Ltda.Av. Roberto Gordon. 138Caixa Postal 37609901-970 DiademaSao Paulo, BrazilTEL: (11) 445-1499FAX: (11) 456-6433

CanadaMSA Canada Inc.148 Norfinch DriveNorth York, OntarioM3N 1X8, CanadaTEL: (416) 667-9400FAX: (416) 663-5908

ChileMSA de Chile Ltda.Avda. Salvador 1434Casilla 16647, Correo 9Santiago, ChileTEL: (2) 2255377FAX: (2) 2250799

ChinaWuxi-MSA SafetyEquipment Co. Ltd.305 Xicheng RoadWuxi City. Jiangsu ProvincePeoples Rep. Of ChinaTEL: (510) 2406134FAX: (510) 2402310

FranceMSA de France13 rue de la GuivernoneBP61795004 Cergy Pointoise CedexTEL: (1) 34323432FAX: (1) 30376305

GermanyAuergesellschaft GmbHP.O. Box 620D-12006 BerlinGermanyTEL: (30) 6886-0FAX: (30) 6886-115

Great BritainMSA (Britain) Ltd.East ShawheadCoatbridge, ML5 4TDScotland, Great BritainTEL: (236) 424966FAX: (236) 440881

HungaryMSA Auer HungariaBiztonsagtechikai Kft.Gyomroi ut 140H-1 108 Budapest X.HungaryTEL: (1) 1272-010FAX: (1) 1272-010

IndiaMSA (India) Ltd.P-25 Transport Depot RdCalcutta 700088 IndiaTEL: (33) 49-2206FAX: (33) 4799368

ItalyMSA Italiana S.p.A.P.O. Box 1719-20101Milano, ItaliaTEL: (2) 89-20-19-18FAX: (2) 82-59-228

JapanMSA Japan Ltd.15-21 Roppongi 6-ChomeMinato-KuTokyo 106. JapanTEL: (3) 3403-3918FAX: (3) 3479-0460

MexicoMSA de MexicoS.A. de C.V.Francisco 1. Madero 84Apartado 16853500 Naucalpan de Juarez(Edo de Mexico)TEL: (5) 576-6444FAX: (5) 359-4330

Middle EastMSA Middle EastBin Hamoodah Bldg.Khalifa St.P.O. Box 46338Adu DhabiUnited Arab EmiratesTEL: (2) 325-906FAX: (2) 339-288

NetherlandsMSA Nederland B.V.P.O. Box 391620 AA HoornNetherlandsTEL: (2290) 503-03FAX: (2290) 13340

PeruMSA del Peru S.A.Los Telares 139Urb. Vulcano. Atc. Lima 3Casilla 1933 (Mail)TEL: (14) 35-4065FAX: (14) 36-1491

RussiaSibertechMonocrystal InstituteNovosubirsk, RussiaTEL: (7-3832) 33 12 79FAX: (7-3832) 39 94 03

Southeast AsiaMSA S.E. Asia Pte. Ltd.51 Ayer Rajah Crescent#02-03Singapore 0513TEL: 776-1633FAX: 778-2529

South AfricaBoart MSA (Pty) Ltd.CNR. Kelvin St. &Steel RdSpartan. P.O. Box 1710Kempton Park 1620TEL: (11) 394-5630FAX: (11) 5648

SpainMSA Española S.A.Narciso Monturiol 7Poligono IndustrialApartado de Correos 10408960 Sant Just DesvernBarcelonaTEL: (3) 372-51-62FAX: (3) 372-66-57

SwedenAB TegmaKopparbergsgatan 29S-21444 MalmöTEL: (40) 80200FAX: (40) 968-215

SwitzerlandMSA (Switzerland) Ltd.Grubenstrasse 24-26CH-3072 OstermundingenTEL: (31) 932-1151FAX: (31) 932-113

ZimbabweMSA Zimbabwe (Pvt.) Ltd.P.O. Box AY280, AMBYHarareTel: (4) 486641FAX: (4) 496357

1. The monitor described in this manual should be installed, operated, and main-tained in strict accordance with any labels, cautions, warnings, drawings, in-structions, and within the limitations stated.

2. The TGM Series Gas Monitor must not be installed in areas or locations whereexplosive concentrations of combustible gases or vapours might occur in theatmosphere: Class I, Groups A, B, C, and D areas, as defined by the NEC.Because these monitors are not explosion-proof, they must be located in anon-hazardous area.

3. Use genuine MSA replacement parts when performing any maintenance onthe TGM Series Gas Monitor. Failure to do so may seriously impair instrumentperformance. Repair or alteration of the TGM Series Gas Monitor beyond thescope of these instructions, or by anyone other than a certified MSA serviceperson, could cause the product to fail to perform as designed and personswho rely on this product for their safety, could sustain severe bodily injury ordeath.

4. For safety reasons, this equipment must be operated and serviced by qualifiedpersonnel only. Read and understand the instruction manual completely beforeoperating or servicing a TGM Series Gas Monitor.

TGM8Gas Monitor Table of Contents

TOC-1

Table of Contents

Section 1General Information ........................................................................................ 1-1

Introduction ....................................................................................................................1-1

LED Indicators, Relays & Audible Alarm ........................................................................1-1

Warning and Alarm Condition, Sensor Failure Condition ...............................................1-1

Section 2Installation and Specifications....................................................................... 2-1

Installation of Monitor .....................................................................................................2-1

Operating Specifications ................................................................................................2-1

External Connection: Remote Sensors, Relays, Power ................................................2-3

Set-Up & Calibration ......................................................................................................2-4

Active Points .................................................................................................................. 2-4

Warning & Alarm Delays, Alarm Latch, Display Mode ...................................................2-4

Audible Alarm Device .....................................................................................................2-5

Section 3General Operation ........................................................................................... 3-1

Scanning, Auto-Ranging ................................................................................................3-1

Warning & Alarm ............................................................................................................3-1

Sensor Failure ................................................................................................................3-1

Section 4Start-Up Procedure for TGM8 .....................................................................................4-1

Calibration Log ...............................................................................................................4-3

Calibration Log ...............................................................................................................4-4

Parts List ........................................................................................................................4-5

TGM8Gas Monitor Table of Contents

TOC-2

Section 5Figure 1: TGM8 Gas Monitor Enclosure Drawing.....................................................5-1

Figure 2: TGM8 Gas Monitor Wiring Diagram ...............................................................5-2

Figure 3: TGM8 Gas Monitor Panel Layout/Connections ..............................................5-3Figure 4: TGM8 Series Gas Monitor Field Connection Diagram

for RS-485 Series Communications Type Sensor .........................................5-4Figure 5: TGM8 Gas Monitor Field Connection Diagram for

4-20 mA Analog Signal Type Sensor ............................................................5-5

Figure 6: TGM8 4-20 mA Sensor Wiring ....................................................................5-6

Section 6CSA Certification..........................................................................................................6-1

FCC Compliance ............................................................................................................6-1

Appendix AFigure 7A: Troubleshooting Guide for TGM8 .......................................................... A-1

Figure 7B: Troubleshooting Guide for TGM8 ............................................................... A-2

Figure 7C: Troubleshooting Guide for TGM8 ............................................................... A-3

Figure 7D: Troubleshooting Guide for TGM8 ............................................................... A-4

Section 1General Information

Introduction

This manual contains instructions for the MSA TGM8 Series Gas Monitor.

Description:

The TGM8 Series Gas Monitor is a micropro-cessor-based monitoring system designed to in-terface with a wide range of MSA Sensors. Atotal of eight (8) Sensors can be connected tothe TGM8. The system comes complete withaudible and visual status indication, relay out-puts, and adjustable warning and alarm levels,complete with reset.

LED Indicators &Relays & Audible Alarm

Warning Condition:

When the gas concentration exceeds thewarning setpoint, the AMBER warning LEDturns on and the warning relay is activated.

The warning relay is non-latching. When theWarning condition disperse below the setpoint,the relay will re-set.

Alarm Condition:

When the gas concentration exceeds the alarmsetpoint, the RED Alarm LED turns on, the com-mon alarm relay is activated and the audiblealarm sounds.

1 - 1

TGM8 Section 1Gas Monitor General Information

The alarm relay is selectable for non-latchingor latching with H1-9. Standard factory con-figuration is the non-latching mode.

Sensor Failure Condition:

The TGM8 Monitor has Sensor OK LEDs.The Sensor OK LED (Green) goes out if any-one of the remote sensor(s) fail and the sen-sor fail relay is energized. The sensor failrelay is non-latching.

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Section 2Installation and Specifications

TGM8 Section 2Gas Monitor Installation and Specifications

Installation of Monitor

Install the TGM8 Gas Monitor on a wall or struc-ture that is free from shock or vibration. It shouldbe protected against physical damage, water, heatand direct sunlight. Install the Monitor so that itsdoor can be opened and accessed for service.

Operating Specifications

Power Requirements:

Standard 110 volts AC 50/60 Hz± 10% @ 0.5 Amps or(Optional) 220 volts AC 50/60 Hz± 10% @ 0.25 Amps or(Optional) 24 volts DC± 10% @ 1.5 Amps max.

Signal Input:

• 4 to 20 milliamps, 2 or 3-wire connection,

OR

• RS-485, 4-wire connection.

Temperature:

Operating: 0° to 40°C (32° to 104°F)Storage: -10° to 50°C (14° to 122°F)

Sensor Power:

• 24 Volts DC @ 200 milliamps

Relay Contact Ratings:

• 10 Amps 1/8 H.P., 125 Vac

• 6 Amps 1/8 H.P., 277 Vac

• 5 Amps 30 Vdc

Number of Relays:

• WARNING: 8 Relay SPDT,

• ALARM: 1 Relay SPDT,

• TROUBLE: 1 Relay SPDT

Digital Readout Scale(Optional):

• 4 Digit Display (Point # and Gas Level)

Status Display:

• Discrete LED for WARNING, ALARM, and SENSOR OK for each point.

Alarm & Warning Setpoints:

Field Selectable:

Warning = 25% or 35% of Full ScaleAlarm = 50% or 100% of Full Scale

(unless otherwise specified when ordering).

Sensor Fail Setpoint:

• Non-adjustable

Time Delays:

• Fixed delay of 5 minutes OFF delay for Warning and fixed delay of 5 minutes ON delay for Alarm. Field Selectable feature.

Audible Alarm:

• Solid ON-Standard Factory Setting (80 - 90 dB @ 1 ft.)

OR

• Variable Sound Pulse

Calibration:

• All units are tested and pre-calibrated at the factory.

Enclosure:

• Standard - Metal NEMA 1• Optional - Fiberglass NEMA 4

Dimensions:

• Height: 15.0” (380 mm)• Width: 12.0” (305 mm)• Depth: 3.75” (95 mm)

TGM8 Section 2Gas Monitor Operating Specifications

2 - 2

TGM8 Section 2Gas Monitor External Connections

2 - 3

External Connections

Perform all wiring and conduit installation in ac-cordance to the Canadian Electrical Code or theNational Electrical Code or to local electrical re-quirements. Use separate conduits for powerwires, relay wires and signal wires.

Remote Sensors:

A total of eight (8) remote sensors can be con-nected to the TGM8 Monitor. Sensor may be a 4-20 mA analog signal type, 2- or 3-wire connector,or RS-485 serial communications type.

The RS-485 type sensors may be of different gastype and range. The TGM8 Monitor will automati-cally adjust itself to read and interpret the RS-485sensors properly. Use shielded cable for wiringinstallation. Signal wiring must not be installed inthe same conduit with power or relay wiring. Re-fer to appropriate sensor wiring diagram (pp. 5-4,5-5, 5-6) and sensor instruction manual for moredetails.

WHEN CONNECTING THE REMOTE SENSORS,MAKE SURE THAT ALL WIRING IS CORRECTAND THE FOUR LEADS OF THE RS-485 BUSARE NOT INTERCHANGED, OR PERMANENTDAMAGE TO THE SENSOR MAY RESULT.

NOTE

MAKE SURE THAT EACH RS-485 TYPE SEN-SOR IS GIVEN A UNIQUE ADDRESS ON ITS AD-DRESS JUMPERS, OR THE TGM8 MONITORWILL NOT BE ABLE TO COMMUNICATE WITHIT.

Relays:

Perform all wiring and conduit installation inaccordance to the Canadian Electrical Codeor the National Electrical Code or to local elec-trical requirements. Use separate conduitsfor power wires, relay wires and signal wires.

Remote Sensors:

A total of eight (8) remote sensors can beconnected to the TGM8 Monitor. Sensor maybe a 4-20 mA analog signal type, 2- or 3-wireconnector, or RS-485 serial communicationstype.

The RS-485 type sensors may be of differentgas type and range. The TGM8 Monitor willautomatically adjust itself to read and inter-pret the RS-485 sensors properly. Useshielded cable for wiring installation. Signalwiring must not be installed in the same con-duit with power or relay wiring. Refer to ap-propriate sensor wiring diagram (pp. 5-4, 5-5,5-6) and sensor instruction manual for moredetails.

WHEN CONNECTING THE REMOTE SEN-SORS, MAKE SURE THAT ALL WIRING ISCORRECT AND THE FOUR LEADS OF THERS-485 BUS ARE NOT INTERCHANGED, ORPERMANENT DAMAGE TO THE SENSORMAY RESULT.

NOTE

MAKE SURE THAT EACH RS-485 TYPESENSOR IS GIVEN A UNIQUE ADDRESSON ITS ADDRESS JUMPERS, OR THETGM8 MONITOR WILL NOT BE ABLE TOCOMMUNICATE WITH IT.

TGM8 Section 2Gas Monitor Setup & Calibration

2 - 4

Setup & Calibration

Active Points:

The number of active scanning points (same asnumber of remote sensors) can be set by the firstthree jumpers (H1-1, H1-2, H1-3). The jumpersare binary encoded. If no jumpers are inserted,then only one point (address 1) is scanned. Toscan more points, insert jumpers such that thedecimal equivalent of the binary code on H1-1,H1-2 and H1-3 plus one, equals the number ofpoints to be scanned. (Refer to Figure 3, Page 5-3).

Warning & Alarm Delays:

There is a fixed delay of five minutes availablefor both warning and alarm. This feature is se-lected with jumper H1-5. When the jumper is out,there is no delay on the warning and alarm re-lays. When the jumper is inserted, a fixed five-minute delay is imposed on the warning andalarm. In the case of the warning, this delay is anOFF delay meaning that the warning relay(s) willremain activated for five minutes after the warn-ing condition has been diminished. In the case ofthe alarm, this delay is an ON delay, meaningthat it takes five minutes for the alarm relay (andaudible device) to activate after the first alarmcondition occurs. (Refer to Figure 3, Page 5-3).

Alarm Latch:

Normally, all relays return to their inactivestate once their condition has cleared. Thealarm relay can be made to latch in the acti-vated position, even after all alarms havecleared. By inserting jumper H1-9, the alarmrelay will remain latched after all alarms clearuntil the reset button is pressed. (Refer toFigure 3, Page 5-3).

NOTE

Pressing the reset button during an alarmcondition does not affect the latching. Thereset button must be pressed after the alarmcondition has cleared in order to de-activatethe alarm relay.

Display Mode:

The display of the TGM8 is auto-ranging forall RS-485 type serial sensors. The displaymode jumpers have no effect on any RS-485type sensors. The display mode jumperstake effect only if analog sensor inputs areused. The incoming analog signals arescaled to the full scale setting of the displaymode jumpers. There are two sets of dis-play ranges available: Range A and RangeB. Jumper H1-4 selects which display rangeis active. If jumper H1-4 is OUT, Range A isselected; if jumper H1-4 is IN, Range B isselected. The following table shows the vari-ous jumper positions for the different displaymodes:

TGM8 Section 2Gas Monitor Setup & Calibration

2 - 5

Range A:

Full Scale H2-2 H2-1

200 out out100 out in10.0 in out10.0/100* in in

Range B:

Full Scale H2-2 H2-1

999 out out500 out in250 in out 75 in in

* This is a special Display Range that displaysthe first four channels (1-4) as 0-10.0 ppm andthe second four channels (5-8) as 0-100 ppm.This is useful for NO2 / CO applications.

Audible Alarm Device:

The TGM8 has two audible alarm modes. Thefirst is a solid-ON mode that sounds the audibledevice continuously while the TGM8 is in analarm state. The second is a variable-ON modethat sounds the audible device in an eight sec-ond interval pulsed fashion. The time betweenpulses is fixed, but the time of the audible alarmis determined by the amount that the alarm sen-sor is exceeding the alarm setpoint. For ex-ample, if the setpoint is at 50% and an alarmcomes in at 55%, the audible alarm would giveshort beeps every eight seconds. As the alarmlevel increases from 55% to 100%, the beepsbecome longer in duration until a solid tone ap-pears at 100%.

To select the solid-ON audible alarm mode,jumper H1-6 must be inserted. To selectthe variable-ON audible alarm mode, jumperH1-6 must be removed (Refer to Figure 3).

In both modes, pressing the reset button willsilence the audible alarm, but will not haveany effect on the alarm LED on the frontpanel or the alarm relay.

TGM8 Section 3Gas Monitor General Operation

3 - 1

Section 3General Operation

Scanning:

The TGM8 will scan each active point in sequence,starting with point one. It will scan up to the lastactive point and then repeat from point one. Aseach point is scanned, the point number and thesensor input value are displayed for two seconds.

Auto-Ranging:

The TGM8 automatically detects the type of sen-sor connected on an RS-485 bus and determinesits full scale value. All setpoints and the displayare adjusted accordingly to match the various sen-sors’ full scale levels. If an analog sensor is con-nected, the display must be manually selected forthe appropriate sensor full scale level using thedisplay mode jumpers (Refer to Section 2 DisplayMode on page 2-4).

Warning and Alarm:

The alarm function on the TGM8 is common to allpoints. Each point has individual warning relaysand discrete LED’s for Sensor OK, Warning, andAlarm. All points ar etied to a common alarm re-lay. The audible alarm will sound every time a newalarm occurs. It may be silenced by pressing thereset button on the front door of the monitor.

If the level of any or more of the active pointsexceed(s) the warning setpoint, the warning LEDfor that point will turn on and the warning relay forthat point will activate. If all active points drop be-low the warning setpoint, the warning LED will turnoff and after a delay defined by jumper H1-5, therelay will return to its inactive state.

If the level of any or more of the active pointsexceed(s) the alarm setpoint, the alarm level

LED for that point will turn on and after a de-lay defined by jumper H1-5, the relay willactivate. At the same time the relay activates,the audible alarm will sound. The audiblealarm may be silenced by pressing the resetbutton. If all active points drop below thealarm setpoint, the alarm will silence (if notsilenced already by reset button) and thealarm level relay will de-activate if jumper H1-9 is not inserted. If jumper H1-9 is insertedfor latching function, then the alarm relay willnot de-activate automatically once all activepoints drop below the alarm setpoint. Therelay will only deactivate once the reset but-ton is pressed.

Sensor Failure:

If the TGM8 loses communications with one ormore sensors, or if one or more sensors fail,that sensor OK LED will turn off and the sen-sor fail relay will activate. If an analog sensoris used and the input is between 1 mA and 3mA, the sensor OK LED will turn off and thesensor fail relay will activate. Any analog in-put below 1 mA causes the TGM8 to ignorethat analog input and treat that sensor as anRS-485 type sensor.

Section 4Start-Up Procedure for TGM8

(A = Remote Sensor(s) B = TGM8 Monitor)

Loosen the locking screws on front cover to open door. Check wiring and locatethe power switch on main circuit board inside enclosure.

Loosen the locking screws on front cover and open the sensor. Check wiring.

Ensure tha the binary coded jumper on H1-1 is properly inserted to reflectnumber of remote sensor(s) connected to TGM8 Monitor.

Ensure that the binary coded jumper on H1-1 is properly inserted to addresseach individual sensor. (If RS-485, 4-wire connection to TGM8 Monitor).

Turn power ON.

Green LED (POWER) Indicator on front panel should be ON.

Green LED (Sensor OK) Indicator on front panel should be ON.

Red LED (SENSOR FAIL) Indicator on front panel should be OFF.

Amber LED (WARNING) Indicator on front panel should be OFF.

Red LED (ALARM) Indicator on front panel should be OFF.

Note: Warning LED and Alarm LED may come on during initial power up. If audiblealarm sounds, press RESET button to silence.

IMPORTANT:

Allow the gas monitor and sensor** to stabilize.

* Applicable only to MSA UNTGS Sensor/Transmitter.

** Refer to Sensor/Transmitter manual for stabilization time.

A B

*

*

*

*

*

TGM8 Section 4Gas Monitor Start-Up Procedure

4 - 1

TGM8 Section 4Gas Monitor Start-Up Procedure

4 - 2

A

*

The MSA TGM8 Monitor allows for field adjustment from factory settings. Please refer toSection 2 of this manual to change settings in order to meet the required sequence ofoperation.

*

*

B (A = Remote Sensor(s) B = TGM8 Monitor)

Ensure that delay function selection jumper on main circuit board is NOT inserted.

Insert Test Jumper to 100% test position. Red LED (SENSOR FAIL), Amber LED(WARNING), Red LED (ALARM) on the Remote Sensor shall come on. (See Note 1).

The audible horn sounds, Amber LED (WARNING) and Red LED (ALARM) on TGM8Monitor shall also come on. (Press the RESET BUTTON to silence horn).

Note: Warning and Alarm Relays will energize. Any remote equipment which may beconnected to the associated relay contacts should now be activated.

Note: TGM8 Monitor is factory preset as follows:

WARNING Level: 35% of Full ScaleALARM Level: 50% of Full ScaleAudible Signal: Activates on at ALARM levelDelay Function: No Delay (jumper not inserted)

Remove Test Jumper from 100% test position.

Repeat this alarm simulation test on other sensor(s) if needed.

The initial function test and start-up is now completed.Close front door and sensor cover and secure locking screws.

Note 1: Remote Sensor, other than MSA UNTGS Series Sensor, must usecalibration check gas to simulate alarm condition.

* Applicable only to MSA UNTGS Sensor/Transmitter.

Calibration Log

TGM8 Section 4Gas Monitor Calibration Log

4 - 3

DATE READING RESET DATE READING RESET

Calibration Log

TGM8 Section 4Gas Monitor Calibration Log

4 - 4

DATE READING RESET DATE READING RESET

Parts List

Use only genuine MSA replacement parts when performing any maintenance onthe TGM8 Monitor. Failure to do so may seriously impair instrument performance.Repair or alteration of the TGM8 Series Monitor beyond the scope of the instructionmanual could cause the product to fail to perform as designed.

Disconnect all power source(s) to the TGM8 before removing or changing any com-ponents.

TGM8 Section 4Gas Monitor Parts List

4 - 5

Item

TGM8 Mother Board 25/35 & 50/100 (110 Vac Version)TGM8 Display Board CompleteTGM8 Display Board, Less DisplayRibbon Cable Assembly

MSA Part No.

215292 213122

213123

* When ordering replacement parts, Please State MSA’s P/N and S/N of unit.

5 - 1

TGM8 Section 5Gas Monitor Figure 1

Section 5Figure 1: TGM8 Gas Monitor Enclosure Drawing

5 - 2

TGM8 Section 5Gas Monitor Figure 2

Section 5Figure 2: TGM8 Gas Monitor Wiring Diagram

TGM8 Section 5Gas Monitor Figure 3

5 - 3

Section 5Figure 3: TGM8 Gas Monitor Panel/Layout

Connections

TGM8 Section 5Gas Monitor Figure 4

5 - 4

Section 5Figure 4: TGM8 Series Gas Monitor Field

Connection Diagram for RS-485 SeriesCommunications Type Sensor

TGM8 Section 5Gas Monitor Figure 5

5 - 5

Section 5Figure 5: TGM8 Gas Monitor Field Connection

Diagram for 4-20 mA Analog SignalType Sensor

TGM8 Section 5Gas Monitor Figure 6

5 - 6

Section 5Figure 6: TGM8 4-20 mA Sensor Wiring

Section 6

CSA Certification

Certificate of Compliance No. LR 51078-5

FCC Compliance

This device complies with Part 15 of the FCCRules. Operation is subject to the following twoconditions:

1. Device may not cause harmfulinterference.

2. Device must accept any interferencereceived, including interference thatmay cause undesired operation.

NOTE

This equipment has been tested and found tocomply with the limits for a Class A digitaldevice, pursuant to Part 15 of the FCC Rules.These limits are designed to provide reasonableprotection against harmful interference when theequipment is operated in a commercialenvironment. This equipment generates, usesand can radiate radio frequency energy and, ifnot installed and used in accordance with theinstruction manual, may cause harmfulinterference to radio communications.Operation of this equipment in a residential areais likely to cause harmful interference, in whichcase the user will be required to correct theinterference at his or her own expense.

Changes or modifications not expresslyapproved by the party responsible forcompliance could void the user’s authority tooperate this equipment.

TGM8 Section 6Gas Monitor CSA Certification & FCC Compliance

6 - 1

TGM8 Appendix AGas Monitor Figure 7A

A - 1

Appendix AFigure 7A: Troubleshooting Guide for TGM8

TGM8 Appendix AGas Monitor Figure 7B

A - 2

Appendix AFigure 7B: Troubleshooting Guide for TGM8

TGM8 Appendix AGas Monitor Figure 7C

A - 3

Appendix AFigure 7C: Troubleshooting Guide for TGM8

TGM8 Appendix AGas Monitor Figure 7D

A - 4

Appendix AFigure 7D: Troubleshooting Guide for TGM8

Manufactured by

Call Toll Free @ 1 (800) 267 0672

MSA Canada Inc.TORONTO, ONTARIO, CANADA M3N 1X8