Detcon TP-524C Manual de usuario descargar pdf (Pagina 3)

3.0 DESCRIPTION

Detcon MicroSafe™ Model TP-524C, hydrogen sulfide sensors are non-intrusive “Smart” sensors designed to detect

and monitor H2S in air. Ranges of detection are 0-20 ppm, 0-50 ppm, and 0-100 ppm. One of the primary features

of the sensor is its method of automatic calibration which guides the user through each step via instructions dis-

played on the backlit LCD. The sensor features LED indicators for FAULT and CAL status and is equipped with a

standard analog 4-20 mA output. The microprocessor supervised electronics are packaged as a plug-in module that

mates to a standard connector board. Both are housed in an explosion proof condulet that includes a glass lens. A

16 character alpha/numeric indicator is used to display sensor readings as well as the sensor’s menu driven features

via a hand-held programming magnet.

3.0.1 Sensor Technology

The sensor technology is a patented solid state metal oxide semiconductor. The sensor consists of two thin films; a

temperature sensitive heater film, and an hydrogen sulfide sensitive sensor film. Both films are deposited on a sili-

con microchip by vacuum deposition. The heater film elevates the operating temperature of the sensor film to a

level where a good sensitivity and response to hydrogen sulfide is achieved. The sensor film is a proprietary metal

oxide that shows a dynamic response to hydrogen sulfide gas. Range of sensitivity is from part per billion to % by

volume. The rugged sensor is capable of maintaining its operating characteristics for periods of up to 7-10 years in

most industrial environments and as such, is supported by a 10-year conditional warranty.

Detcon Model TP-524C Hydrogen Sulfide Sensor

PG.3

Construction of

Semiconductor Sensor

Sensor

Film

Heater

Film

Silicon

Microchip

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Detcon TP-524C Manual de usuario Pagina 3