9APR 2023 | PAGE
different factors such as air humidity or traces of gas trapped inside the
sensor from the previous use. In such a case, the user can wait several
more minutes with the H2 Sensor pump switched on until the PPM
value drops to zero. We recommend always keeping the pump working
to allow fast air circulation through the H2 Sensor. Even if the initial
PPM values are above zero for any reason, it does not limit or prevent
performing a leak detection.
Stream tracer gas under pressure into piping or vessel after closing all
valves and openings through which gas can escape.
Walk slowly along the pipe or vessel, while directing the H2 Sensor
towards the examined structure.
When H2 gas is detected, the PPM value will rise. Walk around the
area where gas is detected to establish where PPM values are the
highest. Take PPM readings using the TAKE A READING button
(Figure 5) to assist in finding the area with the highest PPM readings.
This area may have the highest probability of a leak (but not always).
Push the speaker button (Figure 5) to switch on/off the beeping sound
used to assist in leak detection.
Adjust the brightness of the screen using the + and –buttons (Figure 5).
Clear the reading graph by pressing the CLEAR button (Figure 5).
At the end of the work, switch off the device using the Device On/Off
button on the screen (Figure 5) and wait until the screen switches off.
Switch off the H2 Sensor by pressing the On/Off button (Figure 4).
Clean the Sensor filter from large particles using a brush if needed.
