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AMC 360 Series Instruction Manual

Flammable gas sensor / transmitter
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INSTRUCTION MANUAL
For Flammable Gas Sensor / Transmitter
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
filename: Manual_amc360 series flammable gas sensor transmitter.doc
215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3
Toll Free U.S. & CANADA : (800) 465-5777 • Tel : (613) 225-9531 • Fax : (613) 225-6965
E-mail: gas@armstrongmonitoring.com • Internet: www.armstrongmonitoring.com
360 SERIES
Flammable Gas
Sensor / Transmitter
The Armstrong Monitoring Corporation
Revision 4, 20/11/2006
Copyright ©, Nov 2001, AMC

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  • Page 1 Revision 4, 20/11/2006 filename: Manual_amc360 series flammable gas sensor transmitter.doc Copyright ©, Nov 2001, AMC The Armstrong Monitoring Corporation 215 Colonnade Road South, Ottawa, Ontario, Canada K2E 7K3 Toll Free U.S. & CANADA : (800) 465-5777 • Tel : (613) 225-9531 • Fax : (613) 225-6965...

  • Page 3: Table Of Contents

    AMC-360 Sensor /Transmitter TABLE OF CONTENTS Section Title Page WARRANTY......................iii LIABILITY......................iii MODIFICATIONS AND SUBSTITUTIONS............iii PRODUCT RETURN ..................iii PRODUCT INFORMATION..................iv SENSOR/TRANSMITTER..................iv FACTORY SETTINGS ..................iv CONTAMINANTS & INTERFERANTS...............iv 2.3.1 CONTAMINANTS....................iv 2.3.2 INTERFERANTS (partial list of other gases that the detector will respond to)..v OPTIONAL ACCESSORIES ................vi...
  • Page 4 AMC-360 Sensor /Transmitter...

  • 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 Sensor /Transmitter 2 PRODUCT INFORMATION 2.1 SENSOR/TRANSMITTER Sensor/Transmitter Unit Order Number …………………….. Transmitter Part Number / WARRANTY…………………….. Transmitter Serial Number.….………………………………… Sensor Part Number / WARRANTY….………………………. Sensor Serial Number………………………………………….. Power Supply Requirement……………………………………. 12 to 26 VDC Current Consumption……..……………………………………. 300 mA max 2.2 FACTORY SETTINGS...

  • Page 7: Interferants (Partial List Of Other Gases That The Detector Will Respond To)

    AMC-360 Sensor /Transmitter 2.3.2 INTERFERANTS (partial list of other gases that the detector will respond to) Nitrogen Compounds Diolefins Organic Acids ammonia 1.3-butadiene acetic acid hydrazine 1,4-hexadiene acetic anhydride cyanogens n-butyric acid hydrogen cyanide Acetylenes methylamine acetylene Esters ethylamine propyne...

  • Page 8: Optional Accessories

    AMC-360 Sensor /Transmitter 2.4 OPTIONAL ACCESSORIES The following options are available for your AMC 360 Series Transmitter: AMC 6000-08 Duct Adapter AMC 6000-06 Splash Guard AMC 6000-01 Flow Through Adapter AMC 4309 Charcoal Filter AMC-E6222 Poison resistant sensor. NOTE: The use of optional accessories may affect the response time and void the CSA 152 approval.

  • Page 9: Product Description

    3 PRODUCT DESCRIPTION 3.1 GENERAL DESCRIPTION The AMC-360 series sensor/transmitter is designed to provide continuous, reliable surveillance of surrounding air for combustible gases (stated in Product Information, page iv). This unit provides a 4 to 20 mA, variable current signal which is proportional to the gas concentration detected.

  • Page 10: Housing Options

    AMC-360 Sensor /Transmitter 3.2 HOUSING OPTIONS The AMC-360 series transmitter/sensor units are available in the following explosion-proof housings (see Figure 1). The explosion-proof housings are also available with a corrosion resistant finish. • Explosion-Proof (rated for Class I, Groups B, C, D) •...

  • Page 11: Installation

    AMC-360 Sensor /Transmitter 4 INSTALLATION 4.1 LOCATION AND MOUNTING Select an appropriate height and location for the sensor/transmitter with consideration of density and source of target gas. Mount the transmitter/sensor 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 12: Cable Selection And Wiring

    AMC-360 Sensor /Transmitter 4.2 CABLE SELECTION AND WIRING The transmitter output (–,S,+) terminal block connects to the (–,S,+) connections on a channel terminal block of a power supply/monitor (one transmitter per channel), as shown in Figure 4. Connection should be made using 3-conductor, shielded cable (shield is to be grounded at the power supply/monitor).
  • Page 13 AMC-360 Sensor /Transmitter POWER SUPPLY/MONITOR 12-26 VDC + MAX 250 OHM INTERNAL LOAD 3-WIRE SHIELDED CABLE WARNING CABLE SHIELD MUST NOT BE USED AS A CONDUCTOR. POWER CONNECT SHIELD AT MONITOR. SPAN ZERO SENSOR TRANSMITTER Figure 4: Wiring layout...

  • Page 14: Operation And Calibration

    5 OPERATION AND CALIBRATION 5.1 OPERATION The AMC-360 series transmitter/sensor unit is factory calibrated for the gas listed in Factory Settings at the beginning of this manual. 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 24 hours.

  • Page 15: Equipment Required

    The remote calibration lead is required to measure the transmitter output signal. The insertion of the calibration lead plug into an AMC 3-wire model transmitter cal jack will disable the transmitter output signal. This will result in a FAIL ALARM condition at the monitor or controller during the calibration / verification procedure.
  • Page 16 AMC-360 Sensor /Transmitter response is measured between (–) and (1) terminals. In clean air, the voltage for a functional sensor should be about 1.00 VDC. When a sample of 20% LEL method is applied, you should observe a minimum of 0.003 V (3 mV) shift. Anything less is inadequate sensor output to achieve regular operation and the sensor should be replaced.

  • Page 17: Preventive Maintenance

    AMC-360 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 18 AMC-360 Sensor /Transmitter FROM MONITOR STEP 1 : POWER DOWN STEP 2 : UNSCREW SENSOR TRANSMITTER WIRING FROM TERMINAL BLOCK. POWER SPAN ZERO SENSOR STEP 3 : UNTHREAD SENSOR SENSOR ASSEMBLY FROM TRANSMITTER HOUSING STEP 4 : THREAD NEW SENSOR...

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