AMC AMC-360-IREP Bedienungsanleitung
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:
3144405A.doc Revised, 30/04/2007
Copyright ©, October 1994, AMC
The Armstrong Monitoring Corporation
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
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
i
TABLE OF CONTENTS
1WARRANTY............................................................................................................iii
1.1 LIABILITY...........................................................................................................iii
1.2 MODIFICATIONS AND SUBSTITUTIONS.........................................................iii
1.3 PRODUCT RETURN .........................................................................................iii
2PRODUCT INFORMATION.....................................................................................iv
2.1 TRANSMITTER..................................................................................................iv
2.2 FACTORY SETTINGS.......................................................................................iv
3PRODUCT DESCRIPTION ......................................................................................1
3.1 GENERAL DESCRIPTION.................................................................................1
3.1.1 BASIC REQUIREMENTS........................................................................................1
3.1.2 SENSOR DETAILS .................................................................................................1
3.2 HOUSING OPTIONS.........................................................................................2
4INSTALLATION .......................................................................................................3
4.1 LOCATION AND MOUNTING............................................................................3
4.2 CABLE SELECTION AND WIRING...................................................................4
4.2.1 TRANSMITTER INTERFACE TO COMPUTER, DATALOGGER OR NON-AMC
SYSTEM................................................................................................................................4
5OPERATION AND CALIBRATION..........................................................................6
5.1 OPERATION......................................................................................................6
5.2 CALIBRATION...................................................................................................6
5.2.1 EQUIPMENT REQUIRED.......................................................................................6
5.2.2 TRANSMITTER CALIBRATION / VERIFICATION SET-UP PROCEDURE............7
5.2.3 ADJUSTMENTS (STANDARD CALIBRATION)......................................................7
6PREVENTIVE MAINTENANCE................................................................................9
6.1 GENERAL..........................................................................................................9
6.2 VERIFICATION OF OPERATION......................................................................9
6.3 SENSOR REPLACEMENT................................................................................9
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
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NOTE
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AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
iii
1WARRANTY
The AMC-360-IREP transmitter is warranted against defects in material and workmanship for a
period of two (2) years from the factory shipping date. Refer to section 2.1 (next page) for the
sensor warranty period. During the warranty period, The Armstrong Monitoring Corporation will
repair or replace components that prove to be defective in the opinion of AMC. Maintenance
items are not warranted. Any equipment deemed to be defective by the user should be returned
to The Armstrong Monitoring Corporation for evaluation (see product return below). Site visits
by Armstrong personnel, to evaluate/repair equipment, are not covered by this warranty.
AMC is not liable for auxiliary interfaced equipment, nor consequential damage. This warranty
shall not apply to any product which has been modified in any way, repaired by any party other
than a qualified technician or authorized AMC representative, or when failure is due to misuse
or conditions of use.
1.1 LIABILITY
All AMC products must be installed and maintained according to instructions. Only qualified
technicians should install and maintain the equipment. AMC shall have no liability arising from
auxiliary interfaced equipment, for consequential damage, or the installation and operation of
this equipment. 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.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
AND SPECIFICALLY THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THERE ARE NO WARRANTIES THAT EXTEND BEYOND THE
DESCRIPTION ON THE FACE THEREOF.
1.2 MODIFICATIONS AND SUBSTITUTIONS
Due to an ongoing development program, AMC reserves the right to substitute components and
change specifications at any time without incurring any obligations.
1.3 PRODUCT RETURN
All products returned for warranty service will be by prepaid freight and they will only be
accepted with an R.M.A. number issued by AMC. All products returned to the client will be
freight collect.
WARNING
USING ELECTRICALLY OPERATED EQUIPMENT NEAR GASOLINE OR OTHER
COMBUSTIBLE VAPOURS OR GAS MAY RESULT IN FIRE OR EXPLOSION, CAUSING
PERSONAL INJURY AND PROPERTY DAMAGE. CHECK TO ASSURE THE WORKING
AREA IS FREE FROM SUCH HAZARDS AND USE PROPER PRECAUTIONS DURING
INSTALLATION AND OTHER PROCEDURES.
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
iv
2PRODUCT 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 ……………………………..………………….. maximum 250 ohms
2.2 FACTORY SETTINGS
Gas Type ……………………………………………………………. Methane
Zero Gas, at 4 mA signal …………………………………………..
Gas Concentration at 20 mA signal ………………………………
Calibration Adapter Part Number…………………………….……
Note:
All Armstrong Monitoring equipment must be installed and maintained according to
instructions, to ensure proper operation. Only qualified personnel should install and
maintain the equipment.
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
1
3PRODUCT 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. Each sensor/transmitter unit is factory calibrated with its interconnected
sensor and is ready for field installation and operation.
3.1.1 BASIC REQUIREMENTS
OPERATING TEMPERATURE: -40 to +40 ºC (-40 to +104 ºF)
OPERATING PRESSURE: Ambient atmospheric pressure.
HUMIDITY:
0 to 99% RH, non-condensing.
SIGNAL OUTPUT LOAD:
250 ohms maximum.
SIGNAL OUTPUT: Linear
3.1.2 SENSOR DETAILS
SENSOR TYPE: Infrared
RANGE: 0-100% by LEL, methane
RESPONSE TIME: T90 <20 s @20ºC ambient
RESOLUTION: 1% of measuring range
ZERO DRIFT: ±1% full scale per month @20ºC ambient
MTBF: > 5 years
Note:
Turn off power supply before removing or replacing the transmitter or sensor.
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
2
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)
FIGURE 1: Explosion-proof housing options.
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
3
4INSTALLATION
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. Sensor placement should consider the density of methane
being lighter than air and factors relating to optimum installation location (see FIGURE 2).
Note:
Mounting arrangement of transmitter housing depends on location of transmitter and
mounting surface. Mounting hardware is not supplied.
FIGURE 2: Mounting sensor/transmitter unit.
AMC-360-IREP 0-100% LEL Methane Sensor/Transmitter
4
4.2 CABLE SELECTION AND WIRING
Connection should be made using 3-conductor, shielded cable (shield must be grounded at the
power supply). 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. The transmitter output (-, s, +) terminal block connects to a
filtered, DC power supply through field wiring. (see Figure 3)
The signal output from the transmitter is a 4 to 20 milliamp DC current. This can be measured
from the signal wire, or if a voltage measurement is needed, connect a resistor (250 ohms max.)
between the transmitter signal output (s) and power supply ground (-).
Figure 3: Computer or Datalogger interface wiring layout.
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