sewerin EX-TEC SNOOPER H, Руководство по эксплуатации

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7.0 Technical notes
Sensor lifetime
The lifetime of the sensor may be shortened by the following
undesirable influences:
The sensors are deleteriously affected by gaseous components
of silicones, oils and phosphate esters, which irreversibly re-
duce their sensitivity.
Pollution of the measuring environment by halogens, burnt neo-
prene, PVC, trichloroethylene and the like also weakens the
sensitivity of the sensors, but in this case it can be regenerated.
☞
Explosion protection is jeopardised if the detector is
opened by untrained persons !
Cleaning
Clean the detectors only with a damp cloth. No solvents, benzines
or similar substances may be used.
Static charging
Generally speaking electrostatic charging should be avoided.
Objects with no electrostatic earth (including, for example, metallic
housings with no earth connection) are not protected from charges
resulting from dust, vapour flows and the like.