Key Features
- Continuous monitoring of refrigeration system relief valves
- Industry standard linear 4/20 mA output
- Durability and long life of a solid-state sensor
- Corrosion, weather and chemical resistant transmitter enclosure
- Sensor designed for harsh environments from -46°F to +140°F
- Sensor and preamp in one assembly - only one cable required
- 0-1% (0-10,000ppm) allows for wide range of alarm setpoints
- Ability to detect “weeping valves” to prevent refrigerant loss over time
- Innovative sensor housing allows for simple & low cost sensor replacement
The GasGuard Vent Line utilizes a
rugged solid-state sensor
technology for fast leak detection
and long life. The standard
detection range of the GasGuard
Vent Line 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. Either could
mean costly repairs or plant
downtime, not to mention loss of
refrigerant. Early detection can save
money and protect equipment and
personnel.
The GasGuard Vent Line sensor
provides an industry standard linear
4/20 mA output signal compatible
with most gas detection systems
and PLCs. Expect long sensor life
and virtually zero signal drift over
time. Minimum maintenance
requirements include only a
response check twice per year.
Applications
- Ammonia Refrigeration System Vent Lines (outdoor installations only)
Benefits
- Low cost
- Rugged and reliable
- Simple sensor replacement
- Typical sensor life 5 to 7 years
The GasGuard Vent Line sensor is
designed for outdoor mounting. We
recommend that the sensor be mounted 3’
to 5’ above the roofline on the relief
discharge to atmosphere. The 1/2” pipe
nipple of the supplied mounting kit should
be welded to the relief discharge. The
innovative mounting kit with union allows
for easy and low cost sensor replacement.
The stainless steel enclosure provides the
ultimate protection against any type of
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 solid-state
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 not affected by exposure to
ammonia gases.
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