Sensorix GmbH, an experienced manufacturer and supplier of toxic gas sensors, is pleased to announce an electrochemical sensor for the selective detection of hydrogen cyanide gas.
Hydrogen cyanide (HCN) is a hazardous substance and widely used in industry and mining, as well as for pest control. HCN gas has a characteristic odour of bitter almonds. However, most people cannot smell HCN, according to The National Institute for Occupational Safety and Health (NIOSH).
The HCN odour thresholds vary greatly from 2 to 10 ppm. The NIOSH´s recommended airborne exposure limit at the workplace is 4.7 ppm, which should not be exceeded at any time. So, odour alone is not enough to warn of hazardous exposures. A concentration of hydrogen cyanide gas in the range of over 50 ppm in air can produce death within minutes.
The basis for the correct working of a gas detector is the right sensor. The experience of the Sensorix team and their technology enables them to provide a fast and highly selective electrochemical gas sensor for the detection of HCN without false alarms.
Sensorix HCN 30 can detect hydrogen cyanide even at <1 ppm, with a baseline smaller than 0.2 ppm and a transient response to rapid humidity changes of less than 0.3 ppm.
At the same time, the Sensorix HCN 30 sensor can tolerate at least 100 ppm HCN for 10 minutes.
The HCN 30 sensor responds to hydrogen cyanide gas within less than 50 s (T90). It does not respond to other gases like CO, H2S, H2, or alcohols.
The sensor shows less than 3% standard deviation during 10 repeats:
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