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General Monitors is offering an ultrasonic gas-leak detection system that combines the company’s Gassonic detectors with its modular six-channel MC600 controller.

It is suitable for a range of process-safety monitoring applications in oil and gas production, petrochemical, refining, storage facilities, gas pipeline metering and compressor stations and distribution facilities.

Ultrasonic gas-leak detectors respond to the ultrasonic noise generated by escaping gas at pressures of minimum 145psi for maximum coverage of five to 20m in radius, reducing the risk of fires and explosions.

The technology is able to detect gas leaks regardless of ventilation rates, gas dilution, or the direction of the leak – and without the gas having to make physical contact with a sensor element.

The detectors use a stainless-steel microphone that measures the sound-pressure level in the ultrasonic range.

In addition, they feature the Senssonic integrated acoustic self-test, which periodically verifies the operation of the acoustic sensor to eliminate unrevealed failures.

The detectors hold relevant C-UL and ATEX certifications.

The Gassonic Observer is certified for SIL 2 and 3 systems, while the Gassonic Surveyor is suitable for SIL 1 and 2.

The MC600 is able to connect with up to six Gassonic detectors and displays the SPL as well as alarm, warning and time-delay settings for each device.

The controller permits configuration of relays for the ultrasonic gas leak detectors, as well as selection of zones and voting schemes.

The MC600 is designed with a rugged, corrosion and weather-resistant type 4X housing suitable for class one, division two areas.

The MC600 comes pre-configured and features removable terminal blocks for easy installation and wiring.

A front-panel user interface includes six independent LCD channel displays and a keypad for setup, calibration and gas-reading functions as well as ready, alarm, and fault indicators.

The MC600’s six auxiliary 8A relays are user-configurable to activate external devices such as horns or beacons on any of the six channels’ alarm or warning set-points.

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