Ammonia (NH3) transmitter with semiconductor sensor for the continuous monitoring of the ambient air to detect ammonia concentrations. The semiconductor typical,
non-linear signal is translated into a linear, temperaturecompensated output signal. A comfortable calibration routine with selective access release is integrated in the
transmitter. The ADT-33 possesses a standard analog output (0) 4- 20 mA or (0) 2– 10 V DC, and an RS-485 interface. 2 relays with adjustable switching thresholds
are available as an option.