Lightweight toxic gas detector

November 2000 Analytical Instrumentation & Environmental Monitoring

The Riken Model SC90 toxic gas analyser is designed to detect the presence of small quantities of toxic gases within the following ranges:

Hydrogen sulfide (H₂S) 0-30 ppm

Carbon monoxide (CO) 0-300 ppm

Sulphur dioxide (SO₂) 0-15 ppm

Chlorine (Cl₂) 0-3 ppm

Nitrogen monoxide (NO) 0-100 ppm

Nitrogen dioxide (NO₂) 0-15 ppm

Available from AFH Devers, the SC90 uses an electrochemical cell for detection, is microprocessor-controlled and incorporates an internal diaphragm pump for sample drawing. The concentration readout is shown on a self-illuminated LCD and is selectable for continuous measurement, averaged or peak-hold. Response time is less than 30 s.

The detector is powered by alkaline batteries (Nicad cells optional), incorporates audible/visual alarms, will operate within ambients of -10 to +40°C, measures 200 x 800 x 142 mm and weighs only 1,9 kg.

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