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4. Design and function
4.3 Description
The model GIR-10 gas presence detector is a simple-to-use and portable instrument
that detects the smallest concentrations of SF₆ gas and CO
instrument consists of a console and a hand-held unit which are connected to each
EN
other by a hose. A shoulder strap facilitates the mobile operation.
The gas presence detector is highly sensitive, has a low response time and is
insensitive to moisture and also to typical volatile organic compounds (VOC). The
sensor uses non-dispersive infrared technology (NDIR), which delivers reliable and
exact results.
The gas presence detector was developed to locate the smallest leakage in gas-filled
plants in indoor and outdoor applications. Through the visual and acoustic alarm
signals, the instrument can prevent larger, environmentally harmful and expensive SF₆
gas leaks.
Available versions of the model GIR-10 gas presence detector
SF₆ gas version, 0 ... 50 ppm
■
SF₆ gas version, 0 ... 2,000 ppm
■
CO
version, 0 ... 1,000 ppm
■
2
Key features
Non-radioactive radiation source for easy storage and transport
■
Low maintenance effort (calibration every 2 years)
■
No cross-sensitivity to typical volatile organic compounds (VOC)
■
No effect of air humidity
■
No damage to the sensor through contact with 100 % SF₆ gas concentrations
■
High sensitivity for the detection of SF₆ gas in the atmosphere of up to 1 ppm
■
High sensitivity for the detection of falling CO
■
less than 500 ppm
Audible (only for SF₆ gas detection) and visual alarm signals
■
Selectable displayed units: ppm
■
Particle filter for the protection of the sensor
■
12
v
v
(N
/ Clean Air / Dry Air)
v
2
CO
v
2
, cc/s and g/y (only for the detection of SF
v
WIKA operating instructions gas presence detector, model GIR-10
in the atmosphere. The
2
concentration in the atmosphere of
2
v
gas)
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