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The GD-K77DG Gas Detector Head

Several models available for different gases

The Gas Detector Head models GD-K77DG and GD-K77DG-NT use pyrolysis to oxidize NF, (Nitrogen triflouride); which is then detected as NO2 with an electrochemical sensor. The Model GD-S77DG and S77DG-NT also use pyrolysis to oxidize TEOS (Tetraethoxysilane). The resulting SiO2 (Silicon dioxide) is then detected in a ionization chamber.


This advanced method offers distinct advantages compared to conventional TEOS detection (Hydrolysis/electrochemical sensor): long sensor life and virtually no interference from other gases.

Features include: Digital display with LCD back light / Sensor information and calibration is stored within sensor memory / Self-diagnostic functions by microprocessor / Electrochemical sensors for most semiconductor gases / Built-in sampling pump / Easy replacement of pump and sensor / Two alarm levels / 24VDC operation.

The dimensions are 140 mm (W) x 170 mm (H) x 153 mm (D), weight is approximately 3.2 kg.

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Typical applications are found in the following industries: Semiconductor / Chemical Processing / Laboratory / Manufacturing

Learn more about our GD-K77DG Gas Detector Head and our range of other Fixed Gas Systems


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