GG-VL2 Vent Line gas detector

The GG VL2 utilizes a rugged ammonia selective catalytic bead sensor technology for fast leak detection and long life. The standard 0-1% NH3 detection range of the GG-VL2-NH3 provides real-time continuous monitoring of ammonia concentrations in your high pressure relief vent header.

High concentrations of ammonia gases in your vent line are usually indications of a leaking valve or system overpressure. This could mean costly repairs or plant downtime, not to mention loss of refrigerant and regulatory fines. Early detection can save money while also protecting equipment, product, and personnel.

The GG-VL2-NH3 provides an industry standard linear 4-20 mA output signal compatible with most gas detection systems and PLCs. Expect long sensor life and no zero-signal drift over time.

The GG-VL2-NH3 is designed for outdoor mounting. We recommend that the sensor be mounted 3’ to 5’ above the roof line on the relief discharge to atmosphere. The 1/2” pipe nipple of the supplied mounting kit should be welded or threaded into the relief discharge. The new enclosure design allows for an easier and safer way to calibrate the sensor and replace the sensor element or transmitter in the future.

Reliable & robust

The stainless steel enclosure provides ultimate protection against weather and will stay corrosion free. Every transmitter circuit board is sealed forever in potting compound, protecting electronic components and copper tracing from corrosion.

Since the catalytic-bead sensor is designed to endure the coldest of winters and hottest of summers, the output signal is not affected by extreme temperature variations. The life of the sensor is also not affected by the occasional exposure to high concentrations of ammonia gas.