| | | 3-D Gas Detection The Simtronics GDU listens to the ultrasound generated from escaping gas in all directions. A release does not need to cross an optical path nor does it need to physically reach the unit for detection. The GDU does not detect specific values of LEL or ppm, rather it listens for changes in background sound level. PRESSURISED LEAKS Detection requires a driving pressure of at least 2 bar, hence detection of gas accumulations or vapours is not possible. In basic terms the detected sound is proportional to the leak rate (mass flow rate]. | | Features Instant On-line airborne leak detection Encapsulated resonant sensor ATEX proved, intrinsically safe Direct connection to DCS / PLC / F&G Continuous Active Measurement >60 dB range, no field set-up required Fully sealed and glanded construction >30m (100 ft) detection range Flexible mounting arrangment Performance target verification Applications • Offshore Gas / Oil Platforms • FPSOs • Onshore Gas Receiving Terminals • Underground Gas Storage Facilities • Gas Transmission Networks • Aftercoolers / Fin Fans • LNG regassification plants • Gas fired power stations • Compressor Halls | | Benefits Fast response Robust packaging for all climates Suitable for hazardous area use Standard integration Fail safe monitoring via control system Wide dynamic detection range No replaceable parts Minimises number of devices required Maximises detection coverage True coverage can be demonstrated | | |
| | | Background noise is ignored by a threshold set in the control room and employing time delays. The GDU is delivered factory calibrated and needs no field adjustment or re-calibration. PERFORMANCE TARGET VERIFICATION Unlike other gas detection methods the GDU performance can be demonstrated at commissioning to comply with the site safety case. This is achieved using a pressure regulated inert test gas to simulate the required performance target. | | |