Dwyer Instruments CMT200 Specifications-Installation And Operating Instructions

Model CMT200 Carbon Monoxide Transmitter
Specifications - Installation and Operating Instructions
CMT200-R
The Model CMT200 Carbon Monoxide Transmitter provides a field selectable
current or voltage output that is proportional to the gas concentration in underground
parking garages, vehicle maintenance facilities, or mechanical rooms. A field
replaceable, electrochemical sensor provides accurate readings for up to 4 years
with proper calibration. Field calibration can be done by using Model GCK-200CO-
2000CO2 calibration gas, Model A-507A calibration adapter, and the on board span
and zero potentiometers.
Disconnect power supply before installation to prevent electrical
WARNING
shock and equipment damage. Make sure all connections are in
accordance with the job wiring diagram and national and local electrical codes. Use
copper conductors only.
Use electrostatic discharge precautions (e.g., use of wrist straps)
CAUTION
during installation and wiring to prevent equipment damage.
Avoid locations where severe shock or vibration, excessive
CAUTION
moisture or corrosive fumes are present.
Do not exceed ratings of this device; permanent damage
CAUTION
not covered by warranty may result. The 4 to 20 mA wiring
configurations are not designed for AC voltage operation.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
CMT200
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SPECIFICATIONS
Sensor: Field replaceable electrochemical, 4 year typical lifespan.
Range: 0 to 200 ppm.
Output Drift: <5% per year in air.
Coverage Area: 5000 to 7000 sq. ft. typical.
Accuracy: ±2% FS at the time of calibration.
Temperature Limits: -4 to 122°F (-20 to 50°C).
Storage Temperature: For best sensor life, 32 to 68°F (0 to 20°C).
Humidity Limits: 15 to 90% RH constant; 0 to 99% RH intermittent.
Response Time: <45 seconds to 90% of final value.
Calibration: 15 turn span and zero adjustment potentiometers.
Housing: UV resistant polycarbonate.
Output: Jumper selectable 4 to 20 mA (loop powered) or 2 to 10 V (load must be
>50 KΩ).
Power Requirements: Current Output: 18 to 28 VDC; Voltage Output: 18 to 28 VDC/
VAC, reverse polarity protected.
Electrical Connection: Removable terminal block, add two PG11 and one PG 16
knockouts for conduit fitting.
Weight: 0.28 lb (0.11 kg).
Agency Approvals: CE.
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin AQ-CMT200
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www.dwyer-inst.com
e-mail: info@dwyermail.com