METROTEC
9
5
Device Start-up
5.1
Switching the Measuring Module on
The measuring module is wired up in accordance with the wiring diagram. The module is
ready to start when the supply voltage is applied.
The right LED strip lights up. See Table 1, Figure 1.
After heating up the sensor, the green LED signals readiness. See Table 1, Figure 2.
If the current measured value is below the set limit, both LEDs are green. See Table 1, Figure
3.
Table 1: Status display of right LED array
Waiting
for
sensor
temperature
Sensor temperature reached,
measuring value has exceeded
the
limit
value.
Readiness
and
measuring
value have exceeded the limit
value.
Figure 1
Figure 2
Figure 3
Ab Bereitschaft liefert das Messmodul am mA-Ausgang den übertragenen Messwert.
5.2
Measurement
After the starting routine the device is ready for use and can determine the oxygen content in
gases. This requires supplying the sample gas according to the sensor type. Alternatively the
sample gas contains the sensor. See the operating instructions of the respective sensor.
5.3
Switching the Measuring Module off
It is advisable to keep the device in operation continuously. This will avoid the condensation
of steam in heated sensors which may cause corrosion.
Should the unit need to be switched off, the energy supply of the measuring module will be
interrupted.
See the operating instructions of the respective sensor.
