This operation manual describes the use and precautions of the GfG CI21 transmitter.
The GfG CI21 is an intelligent transmitter designed for fixed gas monitoring systems, specifically for detecting ammonia (NH3). It utilizes a Charge Carrier Injection sensor to convert gas concentration into a standardized electrical signal (0.2..1 mA or 4..20 mA). The device features easy on-site calibration, temperature compensation, and a long sensor life. This manual is written in German.
| Detected Gas | NH3 (Ammonia) |
|---|---|
| Sensor Type | Charge Carrier Injection |
| Output Signal Range | 0.2 .. 1 mA or 4 .. 20 mA |
| Supply Voltage | 10 .. 32 V DC |
| Protection Class | IP 54 |
| Cable Length Limit | max. 200 m |
Approximately 15 to 30 minutes are required to warm up the sensor before checking sensitivity.
The function check should be done before putting the system into operation and repeated at least once a year.
After the warm-up time, the signal must be approximately 200mV for zero gas.