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AMC 210 Series Instructions Manual

Transmitter with external electrochemical sensor
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Installation and Operation of the
AMC-210 Series Transmitter with
External Electrochemical Sensor
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
Filename:
Manual_amc210_trx w external electrochemical sensor.doc
215 Colonnade Road South, Nepean, 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/gas/
210 Series
Transmitter with External
Electrochemical Sensor
INSTRUCTIONS
The Armstrong Monitoring Corporation
Revised, 7/16/2004
Copyright ©, Feb. 2004, AMC

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  • Page 1 210 Series Transmitter with External Electrochemical Sensor INSTRUCTIONS Installation and Operation of the AMC-210 Series Transmitter with External Electrochemical Sensor IMPORTANT: Please read these installation and operating instructions completely and carefully before starting. Filename: Revised, 7/16/2004 Manual_amc210_trx w external electrochemical sensor.doc Copyright ©, Feb.
  • Page 2 NOTE This page intentionally left blank.

  • Page 3: Table Of Contents

    INSTALLATION ....................... 7 LOCATION AND MOUNTING................7 CABLE SELECTION AND WIRING ..............8 4.2.1 TRANSMITTER TO MONITOR WIRING...............10 4.2.2 INTERFACING TO COMPUTER, DATALOGGER, OR NON-AMC MONITOR ..11 OPERATION AND CALIBRATION ................ 12 OPERATION ....................12 CALIBRATION ....................12 5.2.1 EQUIPMENT REQUIRED ..................13 5.2.2...
  • Page 4 AMC-210 Transmitter with external electrochemical sensor NOTE This page intentionally left blank.

  • Page 5: Warranty

    Maintenance items are not warranted. During the warranty period, The Armstrong Monitoring Corporation will repair or replace components that prove to be defective in the opinion of AMC. We are not liable for auxiliary interfaced equipment, or for consequential damage.

  • Page 6: Product Information

    AMC-210 Transmitter with external electrochemical sensor 2 PRODUCT INFORMATION 2.1 SENSOR/TRANSMITTER Sensor/Transmitter Unit Order Number. ………………… Transmitter Part Number..…………………………………… Transmitter Serial Number.….……………………………… Sensor Part Number..……………………………………….. Sensor Serial Number……………………………………….. Power Supply Requirement…………………………………. 12 to 30 VDC @ 20 mA Sensor Warranty…………………………………………..

  • Page 7: Product Description

    3 PRODUCT DESCRIPTION 3.1 GENERAL DESCRIPTION The AMC-210 series sensor/transmitter is designed to provide continuous, reliable surveillance of surrounding air for traces of a specific hazardous gas(es) (listed in Factory Calibration, section 2.2). This unit provides a 4 to 20 mA, variable current signal, which is proportional to the gas concentration detected.

  • Page 8: Housing Options

    AMC-210 Transmitter with external electrochemical sensor 3.2 HOUSING OPTIONS The AMC-210 series sensor/transmitter units are available in the housings shown in Figure 1. The explosion proof transmitter housing is rated explosion proof for Class 1, Groups B, C and D locations and can have a corrosion resistant finish (optional).

  • Page 9: Installation

    AMC-210 Transmitter with external electrochemical sensor 4 INSTALLATION 4.1 LOCATION AND MOUNTING Mount the sensor/transmitter 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

    For applications not covered by the above chart, an example is shown below for selecting the right cable, using the graph of Figure 3 and the following formulas Note: Some non-AMC equipment may not have the load resistance built in. Example: Calculations on the graph Maximum resistance ….
  • Page 11 AMC-210 Transmitter with external electrochemical sensor FIGURE 3: Cable selection graph...

  • Page 12: Transmitter To Monitor Wiring

    AMC-210 Transmitter with external electrochemical sensor 4.2.1 TRANSMITTER TO MONITOR WIRING The transmitter output (–, +) terminals connect to the (SIG, +) terminals on a channel terminal block of the monitor (one transmitter per channel), as shown in Figure 4. Each transmitter MUST BE CONNECTED TO ITS CORRESPONDING CHANNEL to retain factory calibration of the trip points.

  • Page 13: Interfacing To Computer, Datalogger, Or Non-Amc Monitor

    All Armstrong sensor/transmitters can be connected to computers or data loggers through analog-to-digital converters or to non-AMC monitors. The transmitter output (–, +) terminals connect to a filtered 12 to 30 VDC power supply through field wiring, as shown in Figure 5.

  • Page 14: Operation And Calibration

    5 OPERATION AND CALIBRATION 5.1 OPERATION The AMC-210 series sensor/transmitter is factory calibrated for the gas listed in Product Information (section 2) at the beginning of this manual. The sensor/transmitter should not need re-calibration when first installed and powered up, but a test for correct operation is recommended after a stabilization period of 10 minutes.

  • Page 15: Equipment Required

    AMC-210 Transmitter with external electrochemical sensor 5.2.1 EQUIPMENT REQUIRED • Digital multimeter with a minimum display range of 20.0 mA. • Remote calibration lead provided with the transmitter. • Miniature screwdriver trimmer adjustment tool. • Calibration adapter • Zero & Span gases and regulator (Contact factory for information) 5.2.2 TRANSMITTER CALIBRATION/VERIFICATION SET-UP PROCEDURE...

  • Page 16: Recalibration

    AMC-210 Transmitter with external electrochemical sensor 5.2.3 RECALIBRATION For full recalibration adjustments, follow the Set-Up procedure steps 1 to 9 inclusive. There are two adjustments to be made for periodic recalibration: Zero and Span. Zero: With the sensor in Zero Gas, the transmitter output signal current should read 4 mA.

  • Page 17: Preventive Maintenance

    AMC-210 Transmitter with external electrochemical sensor 6 PREVENTIVE MAINTENANCE 6.1 GENERAL The sensor/transmitter unit should be brushed or wiped clean of any dust or dirt at least once a year or more, depending on the rate of accumulation. To avoid sensor damage, the unit MUST NOT be submerged in any liquids. Any hosing or splashing of the unit with any liquids must also be avoided.
  • Page 18 AMC-210 Transmitter with external electrochemical sensor FIGURE 7: Sensor replacement and wiring procedure.

  • Page 19: Addendum (For Oxygen Only)

    AMC-210 Transmitter with external electrochemical sensor 7 ADDENDUM (FOR OXYGEN ONLY) This AMC-210 Series (2-wire sensor/transmitter with external electrochemical sensor) has been modified and the following information replaces the terminal block & sensor wiring of Figures 4, 6, and 7.

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