Applications & Features
It’s necessary to control the ventilation of car park and vehicle maintenance and test work shop according to many building HVAC regulations. Considering of energy efficiency, demand-controlled ventilation (DCV) is recommended to provide enough fresh air according to CO concentration and temperature. CM transmitter and controller are designed for these applications. It can effectively control the ventilation system to safety and energy-saving operations
Environmentally friendly electrochemical sensor gives good long term accuracy, sensitivity and reliability
Better than most other similar sensors, it gives more than 7~10 years sensor life to protect customer’s investment
Better than most other similar sensors which maybe need recalibration every 6~12 months, it only need periodical recalibration as long as 3~5 years or more, maintain 5% accuracy
All electrical terminals are on the inside bottom, avoid any possible destroy to PCB when wiring (for CMWN)
Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high reliability and anti-interference capability
Wide range of operating temperature, optional relays to actuate the alarm or control function output
LCD & function keys can set various parameters, calibrate and adjust output, so that the product can be a stand alone controller(for CMWN)
Specifications
CO sensor: Electrochemical gas sensor
Range: 0~100ppm, or others (0-400ppm)
Accuracy: ±5% @ 0-400ppm
Temperature sensor：Digital temperature sensor (CMWN)
Thermistor (CMD)
Range: 0~50°C
Accuracy: CMWN：±0.5°C@0~50°C (≥1m/s air flow)
CMD：±0.5°C@25°C (≥1m/s air flow)
 
Output: 4~20mA (3 wires), 0~10VDC, RS485 / Modbus; OUT1­: T, OUT2: CO
Relay: 2×SPST, 1A/30VDC, 0.5A /125VAC (for CMD),
3A/30VDC, 3A/250VAC (for CMWN)
Power: 16~28VAC/16~35VDC (for CMWN)
18~28VAC/18~35VDC (for CMD)
Display & Keys: optional LCD Display & Keys(CMWN), see more details on LCD & Keys operation
Work environment: 0~50°C (continuous); -5~55°C
(intermittent); 5~99%RH (Non- cond.)
Housing: ABS+PC (CMWN), ABS(CMD)
Protection: IP30 (CMWN), IP65 (CMD)
Weight: 150g
Agency Approval: CE