Probe Replacement; Fuse Replacement; Cleaning - E+E Elektronik EE31 User Manual

8.1.1 Sensor replacement of soldered sensors
Sensor replacement procedure:
1) Switch off supply voltage.
2) Unscrew the filter cap carefully.
3) Desolder the humidity sensor element.
4) Shorten the sensor legs of the replacement sensor with a side cutter at 4mm
(from 10mm
5) Solder in the new humidity sensor, the active side has to face the inside (see drawing).
6) Screw on the filter cap carefully (in case of pollution replace it by a new filter cap).
7) Establish connection to PC (RS232).
8) Switch on supply voltage.
9) Start configuration software on PC.
10) For further instructions, see Configuration software, chapter 5.3 "Sensor/Probe replacement".
8.2 Sensor probe replacement / optional
Transmitters of the EE31-xDx and xEx series are available with an optional
remote sensor probe that can be plugged into the middle section of the housing. If
the sensor probe gets damaged (damage to the cable, mechanical destruction of
the sensor probe) it is possible to replace the probe with re-adjustment.
Note:
This will invalidate the factory calibration.
Sensor probe replacement procedure:
1) Switch off supply voltage.
2) Remove damaged sensor probe.
3) Plug replacement probe onto middle section of the housing.
4) Establish connection to PC (RS232).
5) Switch on power supply voltage.
6) Start configuration software on PC.
7) For further instructions, see Configuration software,
chapter 5.3 "Sensor/Probe replacement"
8.3

Fuse replacement

If the green LED on the PCB is not flashing with the supply
voltage switched on, check the fuse and replace if required.
Fuse secondary:
Nominal voltage:
Replacement types:
Series: MSTU 250
Series: 374
8.4

Cleaning

E+E sensing elements are highly robust which makes cleaning very easy. Shake the sen-
sing elements for max. 2 min. in industrial Isopropyl alcohol and after that in water. Let
them dry free. Do not touch or rub the active surface of the sensing elements!
Hardware
to 6mm ), see drawing.
/ 0.39" / 0.24"
solder
pins
reduce
4mm
active side
aktive Seite /
active Side
250mA / T UL248-14
250V
Manufacturer: Schurter
Manufacturer: Littelfuse
Order No.: 0034.7109
Order No.: 374 0250
18
(0.16")