CDH series transmitters are designed for monitoring & controlling carbon dioxide( CO2) concentration.
CDH CO2 transmitter Features:
| Sensor: | NDIR sensor, with atmosphere air calibration function | 
| Sampling Method: | diffusion | 
| Range: | 0~20% vol. or other (0~30% vol.) | 
| Accuracy: | ± (0.5% vol. +3% reading) | 
| Repeatability: | ± (0.1% vol. +2% reading) | 
| Response time: | <20s (0.2l/min, low airflow) | 
| Output: | 4~20mA (default)/ 0~5V/0~10V |