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AMC -360-IREP Instructions Manual

Infrared methane sensor/transmitter 0-100% lel range
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Installation, Calibration & Maintenance
of the AMC-360-IREP Sensor/Transmitter
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
Filename:
3144405A.doc
215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3
Tel: (613) 225-9531 • Fax: (613) 225-6965 • Canada & U.S. Toll Free: 1-800-465-5777
E-mail: gas@armstrongmonitoring.com • Internet: www.armstrongmonitoring.com
360-IREP
Infrared Methane
Sensor/Transmitter
0-100% LEL Range
INSTRUCTIONS
The Armstrong Monitoring Corporation
Revised, 30/04/2007
Copyright ©, October 1994, AMC

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Summary of Contents for AMC AMC-360-IREP

  • Page 1 360-IREP Infrared Methane Sensor/Transmitter 0-100% LEL Range INSTRUCTIONS Installation, Calibration & Maintenance of the AMC-360-IREP Sensor/Transmitter IMPORTANT: Please read these installation and operating instructions completely and carefully before starting. Filename: Revised, 30/04/2007 3144405A.doc Copyright ©, October 1994, AMC The Armstrong Monitoring Corporation 215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3 Tel: (613) 225-9531 •...

  • Page 3: Table Of Contents

    SENSOR DETAILS ....................1 HOUSING OPTIONS ..................2 INSTALLATION ....................... 3 LOCATION AND MOUNTING................3 CABLE SELECTION AND WIRING ..............4 4.2.1 TRANSMITTER INTERFACE TO COMPUTER, DATALOGGER OR NON-AMC SYSTEM ..........................4 OPERATION AND CALIBRATION ................6 OPERATION ...................... 6 CALIBRATION ....................6 5.2.1 EQUIPMENT REQUIRED ..................6...
  • Page 4 AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter NOTE This page intentionally left blank...

  • Page 5: Warranty

    AMC shall have no liability for labour or freight costs, or any other costs or charges in excess of the amount of the invoice for the products.

  • Page 6: Product Information

    AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 2 PRODUCT INFORMATION 2.1 TRANSMITTER Transmitter Unit Order Number ……………..……………………. Transmitter Part Number……………..…..…………...…………… Transmitter Serial Number ………………………………………… Sensor Part Number/WARRANTY………………..………………. Sensor Serial Number …………………………….……………….. Power Supply Requirement …………………….…………………. 12 to 26 VDC @ _____ mA Signal Output Load ……………………………..…………………..

  • Page 7: Product Description

    3 PRODUCT DESCRIPTION 3.1 GENERAL DESCRIPTION The AMC-360-IREP sensor/transmitter unit is designed to provide continuous, reliable surveillance of surrounding air for up to 100% by LEL methane. Used with this sensor, the unit provides a 4 to 20 mA, variable current signal which is proportional to the gas concentration currently detected.

  • Page 8: Housing Options

    AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 3.2 HOUSING OPTIONS The AMC-360-IREP series transmitter units are available in the following housing (see FIGURE 1). The explosion-proof housing is also available with a corrosion resistant finish. • Explosion-Proof (rated for Class I, Groups B, C, D)

  • Page 9: Installation

    AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 4 INSTALLATION 4.1 LOCATION AND MOUNTING Mount the sensor/transmitter unit on a solid, non-vibrating surface or structure in an area where the local concentration of gas is unaffected by the presence of ventilation systems and away from sources of interference gases.

  • Page 10: Cable Selection And Wiring

    See Figure 4 to select cable length and wire gauge according to supply voltage. Run cable through steel conduit for best signal transmission and maximum noise rejection. 4.2.1 TRANSMITTER INTERFACE TO COMPUTER, DATALOGGER OR NON-AMC SYSTEM All Armstrong transmitter/sensor units can be interfaced with computer terminals or dataloggers through Analog-to-Digital converters.
  • Page 11 AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 5000 (1524) 4500 (1371) 4000 (1219) 3500 (1067) 3000 (914) 2500 (762) 2000 (609) 1500 (457) 1000 (304) 500 (152) SUPPLY VOLTAGE (volts) FIGURE 4: Cable selection chart.

  • Page 12: Operation And Calibration

    5 OPERATION AND CALIBRATION 5.1 OPERATION The AMC-360-IREP series transmitter/sensor unit is factory calibrated for the gas listed in section 3.1 GENERAL DESCRIPTION. The unit should not need recalibration when first installed and powered up, but a test for correct operation is recommended. All testing should be done after a stabilization period of 20 seconds.

  • Page 13: Transmitter Calibration / Verification Set-Up Procedure

    AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 5.2.2 TRANSMITTER CALIBRATION / VERIFICATION SET-UP PROCEDURE The calibration procedure may cause the monitoring equipment to give a false alarm, therefore appropriate precautions should be taken. Refer to Figure 5 for the following procedure. 1. Remove cover from transmitter housing 2.
  • Page 14 AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter Figure 5: Calibration/verification set-up procedure.

  • Page 15: Preventive Maintenance

    AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter 6 PREVENTIVE MAINTENANCE 6.1 GENERAL The transmitter/sensor unit should be brushed or wiped clean once a year or more, of any dust or dirt which settles on it, depending on the accumulation. The unit SHOULD NOT be submerged in water or other liquids.
  • Page 16 AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter Figure 6: Sensor replacement.

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