PRODUCT SPECIFICATIONS
Model #
LD920
Name
Leak Detector, H2/N2 Tracer Gas
Sensitivity
< 5 ppm or 2 g/yr R134a equivalent
Sensor Life
> 300 hours
Response Time
Instantaneous
Power Supply
4 AA Alkaline batteries
Battery Life
4-6 hours continuous
Warm up time
< 20 seconds
Probe length
17 inches (43.8cm)
Numerical Display
7 segment digital display (1 to 9)
Weight, lbs.
1.5 lbs. (0.68kg)
Warranty
2 years (includes sensor)
TRACER GAS DETECTION
Tracer Gas consists of a non-toxic, non-flammable, environmentally friendly (non-
polluting) mixture of 5% Hydrogen and 95% Nitrogen. For this reason, the Tracer
Gas can be released into the environment after the leak detection procedure is
completed. The 5%H2/95%N2 Tracer Gas mixture is consistent with the teaching
of EMC Directive 2014/30/EU for use with Low GWP Leak Detection System
Tracer Gas.
The LD920 detects the Hydrogen component of the tracer and because Hydrogen
molecules are so small, it is an ideal gas for leak detection.
The Tracer Gas is charged into an empty system at a pressure of approximately
75 psi (5bar). As Hydrogen is lighter than air, always probe slightly above the
suspected leak area. Once the source of the leak is located and repaired,
the Tracer Gas can be released and the system can be recharged again with
refrigerant. A final check should be performed using a certified refrigerant gas leak
detector such as the Imperial LD900.
NOTE:
Run engine with air conditioner on briefly to properly distribute the
H2/N2 Tracer Gas.
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