Important - Würth 0715 53 260 Instrucciones De Servicio

ppm % by vol.
1 = 0,0001
10 = 0,001
100 = 0,01
1000 = 0,1
10000 = 1
100000 = 10
1000000 = 100

Important

Adhere to the annual calibration
cycles
The user is liable for damages due to improp-
er use. If you have questions on how to ap-
ply the device, contact your product and ap-
plication service partner in Germany under
phone no.: +49 (0)180 60 65 69 (14 cents/min).
Description / operation
‰ Since it is very simple to operate the device, eve-
rybody is able to locate leakages. Its size and
handiness makes the device especially suitable
for fitters or fault-clearing service teams.
‰ The movable sensor head enables you to meas-
ure even concentrations in awkward spots.
Sensor (fig. I/II)
The sensitive gas sensor is located in the sensor head
1. It is suited for methane and calibrated for it. How-
ever, the sensor detects also further gases, e.g. pro-
pane, hydrogen or petrol fumes.
Gas sensors stored for a long time, lose their operat-
ing point. This is the consequence of contamination of
the sensor surface with oxygen and can not be pre-
vented but by operation. Therefore it is advisable to
put the device in operation on a regular basis (every
2 or 3 days) for approx. 15 minutes. This prevents
that you have to wait for a longer period of time
when using the device. The waiting period is marked
by a measuring signal after the end of the warming
up phase and may amount to 45 minutes under unfa-
vourable conditions.
To remove contaminations on and in the sensor cap,
unscrew the sensor cap and clean it with compressed
air as shown in fig. II.
CH in 1m air
3
4
= 1 cm
3
= 10 cm
3
= 100 cm
3
= 1 dm
3
= 10 dm
3
= 100 dm
3
= 1 m
3
Important information on the sen-
sor!
The sensor may not come in contact with high con-
centrations of hydrogen sulphide, sulphur oxides,
chloride, hydrogen chloride. This leads to corrosion
or breakage of the connection joints in the sensor or
of the sensor heating. The sensor may not come in
contact with alkaline material, salt water or direct wa-
ter. This causes a high degree of drift (zero point in-
stability) of the sensor. Moistened sensors can break
in case of frost and damaged.
The sensor is sensitive to dirt and mois-
ture.
Pay therefore attention that the sensor does not come
into contact with dirt or moisture. Never put the sen-
sor head in soil or plunge it in a fluid.
Measuring range (fig. I)
With its five gas concentration LEDs 7, the measuring
range of the appliance covers a measuring range of
approx. 10 ppm up to 1% by vol. The pulse frequen-
cy of the acoustic signal increases with increasing
concentration. When reaching 1% by vol. a continu-
ous tone sounds.
When measuring, pay attention that methane is light-
er than air and rises up. Thus, measure always above
the pipe to be checked or the presumed leakage.
LED – allocation (fig. III)
The following gas concentrations can be assigned to
the 5 LEDs.
1 1.0% by vol. methane red LED
2 0.1% by vol. methane red LED
3 100 ppm methane red LED
4 50 ppm methane yellow LED
5 10 ppm methane yellow LED
If the device is calibrated for another gas type by the
manufacturer, the values refer then to this gas.
Switching in the appliance (fig. IV/3)
After switching in the appliance with the On/Off
switch 3 the warming up phase starts. The sensor
needs this time to reach its operating temperature.
The warming up phase is finished if the stand-by
LED 6 lights up. In the stand-by mode a short signal
sounds every 10 seconds indicating that the device is
ready for measuring.
You can now start measuring.
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