Suited for use in the refrigeration industry, CI21 for ammonia gas detection is not affected by fluctuating humidity and temperature levels. Controlled sensor voltage maintains a constant internal temperature without additional heaters. From GfG-Dynamation, the charge carrier injection transmitter operates on a 4 to 20 mA loop. It is available in ranges up to 10,000 ppm for NH3 and can be connected to a PLC.
November/December 2000, RS# 212