testo hydrotest 6337.9741 Bedienungsanleitung Seite 10

Replacing the sensors
testo
term
* active metal layer facing outwards
The sensors for humidity and temperature measurement
can be unplugged. Should the sensors be damaged,
they can be replaced in the field. The humidity sensor
then requires calibration. The Pt100 and NTC do not
have to be calibrated! A simple and precise control and
calibration set can be delivered on request and enables
the calibration of the measuring transducer.
When replacing the sensor, proceed as follows:
- Unscrew and carefully remove the protective cap.
Do not tilt the protective cap, do not apply force and
do not touch the sensors.
- Use a suitable tool for replacing the
sensor (i.e. tweezers).
- Take hold of the sensor base. Do not touch
the sensors!
- Insert the sensor so that the metal layer is facing
outwards.
- Do not interchange the sensors (see sketch)
- Carefully replace the protective cap and screw it
back on gently.
NTC
Pt100
%RH*
*