Model TS4000H monitors ammonia in the 0 to 50 or 0 to 100 ppm ranges. Its electrochemical sensor has little to zero drift across its operational environmentalGeneral Monitors monitors ammonia conditions, according to the manufacturer. Fast response helps protect people, equipment and the environment in industries where ammonia leaks are a hazard. The T50 response is less than 15 sec and the T90 response is less than 1 min.

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