Groveley Detection - Ultrasonic Gas Detectors for the Onshore and Offshore Oil and Gas Industry

Groveley Detection has been supplying the GDU series of ultrasonic gas detectors (also known as acoustic gas detectors) since 2006. Groveley has supplied hundreds of ultrasonic detectors for onshore and offshore applications all over the world to protect personnel and equipment. These detectors use robust piezoelectric sensors, which have proven reliability and never require field calibration, giving a low cost of ownership.

Established for over 20 years in the oil and gas industry, Groveley offers a one-stop-shop approach to fire and gas detection products.

Instantaneous gas leak detectors

The GDU series of ultrasonic omni-directional gas leak detectors can detect leaking gas down to a pressure of 2bar. This technology does not rely on the gas cloud migrating to the detector and therefore is unaffected by wind or weather conditions. The piezoelectric sensors give instantaneous response to the ultrasonic sound generated by the leaking gas.

High levels of audible noise associated with high-speed rotating equipment (such as compressors) are filtered out and so do not affect the detector.

Ultrasonic omni-directional gas leak detectors

The GDU-Incus has four piezoelectric sensors, giving increased coverage of up to 40m radius, depending on:

• Gas type
• Leak size
• Pressure
• Temperature
• Background noise

The four sensors have the added benefit of providing built-in redundancy. Groveley has trained engineers who are able to measure ultrasonic background noise levels on site and advise on optimal positioning and coverage for each individual process condition.

ATEX-certified gas leak detectors

The Groveley Detection GDU-Incus is ATEX certified for hazardous areas:

• EEx d ib llB +H2 T4
• IEC Ex ITS 10.0004X

The detector is currently pending certifications for UL, ULC and GOST K.

The Groveley Detection GDU-Incus' safety integrity rating is SIL 2 and it has continuous electronic self-checking, plus a unique self-test and cleaning function that uses pressurised air to check the operation of the sensors. The GDU-Incus continues to detect gas leaks during the self-test cleaning cycle.

Stainless-steel and marine-grade detectors

The GDU-Incus is rated at IP66/67. This includes the piezoelectric sensors and so it is completely protected from the elements. The temperature rating extends from -55ºC to +85ºC with up to 100% humidity, therefore it will perform in any environment in the oil and gas industry. Groveley supplies detectors with either 316 stainless steel or marine-grade epoxy-coated aluminium housings, depending on the application.

Stand alone gas leak detectors

The GDU-Incus is a three-wire device with an industry standard 4-20mA output. The unit also has RS485 communications and relay outputs for alarm and fault conditions, and the alarming can incorporate a variable time delay, giving the GDU-Incus stand alone capabilities.

The detector does not require field calibration and its performance can be verified remotely.

About Groveley Detection

Groveley Detection has been supplying fire and gas detection equipment to the oil and gas industry since 1991. We have a wealth of knowledge and experience, not only from supplying our own manufactured equipment such as the GDU-01 and GDU Incus ultrasonic gas leak detectors and GDA-Aspirators, but also third-party products.

Groveley can provide complete solutions to project requirements for fire and gas field instrumentation.