ACM 200 Series Manuel utilisateur
200 Series
Transmitter
INSTRUCTIONS
AMC-200 Series Transmitter
INSTALLATION AND OPERATING INSTRUCTIONS
FOR THE AMC-200 SERIES TRANSMITTER
IMPORTANT:
Please read these installation and operating instructions completely
and carefully before starting.
filename: Manual_amc200_transmitter.doc
Revised, 4/16/2002
Copyright ©, April 2002, AMC
The Armstrong Monitoring Corporation
215 Colonnade Road South, Nepean, Ontario, Canada K2E 7K3
Tel: (613) 225-9531 • Fax: (613) 225-6965 • U.S. & Can. Toll Free: (800) 465-5777
E-mail: gas@armstrongmonitoring.com • Internet: www.armstrongmonitoring.com/gas/
AMC-200 Transmitter
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TABLE OF CONTENTS
Section Title Page
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 SENSOR SPECIFICATIONS ................................................................................ 1
4INSTALLATION ....................................................................................................... 2
4.1 LOCATION AND MOUNTING............................................................................ 2
4.2 CABLE SELECTION AND WIRING ................................................................... 3
4.3 TRANSMITTER TO MONITOR WIRING ........................................................... 5
4.3.1 INTERFACING TO COMPUTER, DATALOGGER, OR NON-AMC MONITOR ..... 5
5OPERATION AND CALIBRATION .......................................................................... 7
5.1 OPERATION...................................................................................................... 7
5.2 CALIBRATION ................................................................................................... 7
5.2.1 EQUIPMENT REQUIRED..................................................................................... 7
5.2.2 TRANSMITTER CALIBRATION/VERIFICATION SET-UP PROCEDURE............. 8
5.2.3 ADJUSTMENTS ................................................................................................... 9
6PREVENTIVE MAINTENANCE.............................................................................. 10
6.1 GENERAL........................................................................................................ 10
6.2 SENSOR REPLACEMENT .............................................................................. 10
AMC-200 Transmitter
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NOTE
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AMC-200 Transmitter
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1 WARRANTY
The AMC-200 Series Transmitter is warranted against defects in material and workmanship for
a period of two (2) years from date of delivery. 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 consequential damage.
This warranty shall not apply to any product, which has been modified in any way, which has
been repaired by any other party other than a qualified technician or authorized AMC
representative, or when such 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 GASOLINE
VAPOURS MAY RESULT IN FIRE OR EXPLOSION, CAUSING PERSONAL INJURY AND
PROPERTY DAMAGE. CHECK TO ASSURE THE WORKING AREA IS FREE FROM SUCH
HAZARDS DURING INSTALLATION OR WHEN PERFORMING MAINTENANCE, AND USE
PROPER PRECAUTIONS.
AMC-200 Transmitter
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2 PRODUCT INFORMATION
2.1 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
2.2 FACTORY SETTINGS
Gas Type ………………………………………………………….
Range ………….………………………………………………….
Zero Gas, at 4 mA signal ………………………………………..
Gas Concentration at 20 mA signal ……………………………
Note:
All Armstrong Monitoring systems must be installed and maintained according to
instructions, to ensure proper operation. Only qualified technicians should install and
maintain the equipment.
AMC-200 Transmitter
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3 PRODUCT DESCRIPTION
3.1 GENERAL DESCRIPTION
The AMC-200 series sensor/transmitter unit is designed to provide continuous, reliable
surveillance of surrounding air for traces of a specific hazardous gas (listed in section 2.2,
Factory Settings). This unit provides a 4 to 20 mA, variable current signal which is proportional
to the gas concentration detected. Each sensor/transmitter unit is factory calibrated and is
ready for field installation and operation.
3.1.1 SENSOR SPECIFICATIONS
SENSOR TYPE: Electrochemical cell
RESPONSE TIME: Better than 90% step change in 60 seconds
DRIFT: Less than 2% of full scale per month
SIGNAL OUTPUT: Linear to the concentration of gas
OPERATING TEMPERATURE: 0°C to 40°C
HUMIDITY: 0 to 99% RH, non-condensing.
EXPECTED SENSOR LIFE: Greater than 2 years
STORAGE LIFE: 6 months at 20°C
NOTE
Turn off power supply before removing or replacing the transmitter or sensor.
AMC-200 Transmitter
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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. The sensor housing SHOULD NOT touch the mounting
surface. Some cases may require the use of a spacer between the mounting surface and the
transmitter housing. (See FIGURE 1)
Note:
Mounting arrangement of transmitter housing depends on location of transmitter, and
mounting surface. Mounting hardware NOT supplied.
FIGURE 1: Mounting of the transmitter housing.
AMC-200 Transmitter
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4.2 CABLE SELECTION AND WIRING
Connection should be made using 2-conductor, shielded cable. For best signal transmission
and maximum noise rejection, run cable through steel conduit (cable shield must be grounded
at the monitor or power supply). For basic cable selection (between monitor and transmitter)
when using a 250 ohm load resistance, use the following chart:
Cable Selection Chart
Wire Gauge Cable Length
Feet Metres
AWG @ 12VDC @ 24VDC @ 12VDC @ 24VDC
22 1000 15000 305 4732
20 1500 23000 457 7010
18 2500 38000 762 11582
16 3800 57000 1158 17373
For applications not covered by the above chart, an example is shown below for selecting the
right cable, using the graph in FIGURE 2 and the following formulas (Remember that some non-
AMC equipment may have the load resistance built-in).
EXAMPLE: (Refer to FIGURE 2)
Known data: Obtained from measurements, ratings or specifications.
Power supply ........................................ 17 VDC
Load resistance .................................... 180 Ohms
Wire gauge ........................................... 20 AWG
Cable length / 1 Ohm resistance ...…... 43.6ft (13.3m) typical
Calculations on the graph: Using the power supply voltage as reference.
Maximum resistance .…... MR
Load resistance ............... LR
Formula 1: To determine remaining safe loop resistance.
Maximum resistance ……. 518 Ohms
Load resistance …………. – 180 Ohms
Remaining resistance ….. = 338 Ohms
Formula 2: To determine maximum safe cable length allowed.
Remaining resistance ………… 338 Ohms
Cable length (for 1 Ohm) …….. x 43.6 Feet
Maximum safe cable length …. = 14736 Feet
AMC-200 Transmitter
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FIGURE 2: Cable selection graph.
Ce manuel convient aux modèles suivants
1
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