Gas leak detector SIMTRONICS

The Simrad GDU is an acoustical detector that responds to pressurised gas leaks.
The GDU does not detect specific value s of LEL or ppm rather, it responds to the sound generated by escaping gas at ultrasonic frequencies.

Such signals are generated when leakage occurs at sonic velocity; this requires a driving pressure of at le as t 2 bar.
The detected sound is proportional to the leak rate (mass flow rate). In basic terms, the greater the leak rate (large leak ), the greater the ultrasound emitted. The unit responds instantly to leaks operating over wide dB range by monitoring the characteristic ultrasonic sound pattern of a gas leak (frequencies above hum an hearing).
Back ground noise is blanked out by a threshold set by the control room.

Acoustic gas leak detectors complement traditional gas detection methods used in refineries, gas plant, and offs h ore installations.

No calibration.
Early warning of pressurised leaks
Wide detection range
No maintenance
No field calibration
Standard 4-20 m A output

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