Gas Leak Probe With Control Unit - TESTO 300 XXL Instruction Manual

red LED
yellow LED
green LED
Trimmer potentiometer
for fine adjustment of
the 1st alarm limit.
Service tip:
The trigger limit is factory
adjusted to 200 ppm
CH4 gas.
The 1st alarm limit can
be finely adjusted in a
range from 0...1000 ppm
(perform in fresh air only).
Do not use the gas leak probe and testo 300 XXL in
enclosed rooms or facilities in which gases have
accumulated into an explosive mixture.
The use of other electrical equipment is also prohibited.
It must be ensured that the gas concentration does not
exceed 20% LEL.
Explosive and flammable gases, particularly natural gas and
propane, are detected by the gas leak probe even in low
concentrations in the air. For example, suitable for finding
leaks in gas pipes, vessels and equipment.
1 Connect the probe before switching on the
testo 300 XXL.
2 After the device has been switched on, the warming up
phase of the leak detection probe is automatically started
(approx. 30 sec). Green, yellow and red LED, steady
tone.
3 Ready for use
Green LED flashes steadily, steady tone stops.
4 Conduct leak detection:
• When gas escapes, acoustic signal
(ticking) is audible, becoming faster with increasing
concentration.
• When the 1st switching limit (> 200 ppm) is exceeded,
yellow LED flashes.
• When the 2nd switching limit (> 1%) is exceeded, red
LED flashes, steady tone. No readings of the gas leak
probe are indicated in the display.
The power supply of the gas leak probe is provided by the
control unit.
Duration of measurement with the gas leak probe with fully
charged battery, maximum 2 hours.
Remove the gas leak probe from the device
immediately after the measurement to prevent heavy
battery discharge.
Never leave the gas leak probe connected when charging
the batteries.
Example measurement
Gas leak probe
with control unit
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