CDT-MOD-2000 Duct CO2 transmitters with temperature output for duct that use Modbus serial communication protocol

RS-485 Modbus (RTU)

Accuracy:

CO2: 40 ppm + 2 % of reading, DC model: 75 ppm or 10 % of reading (whichever is greater)
Temperature: <0.5 C

Measurement elements:

NTC10k temperature sensor, Non Dispersive Infrared (NDIR) CO2 sensor

Measuring units:

ppm, C

Calibration:

Automatic self-calibration, ABC LogicTM or continuous comparison (DC)

Supply voltage:

24 VDC/VAC 10 %

Current consumption:

max 230 mA (at 24 V) + 10 mA for each voltage output

Output signal 1:

0/25/10 V (linear to CO2), L min 1 k

Output signal 2:

0/25/10 V (linear to T), L min 1 k

Operating temperature:

0+50 C

Protection standard:

IP54