22
Self diagnosis:
•
LED D1 red
- lit permanently during the calibration routine
- lit up shortly when reset to factory calibration settings
Self-help in case of errors:
•
ERROR
- possible cause
⇒
steps against it
•
WRONG VALUE
-
error during or after recalibration of transmitter
⇒
Reset to factory calibration and recalibrate
according to calibration procedure
- filter cap polluted
⇒
change filter cap
- Sensor damaged
⇒
change humidity sensor element
•
LONG RESPONSE TIME
- filter cap polluted
⇒
change filter cap
- wrong filter type
⇒
adjust filter type to application
•
INSTRUMENT BREAKDOWN
- no supply voltage
⇒
check the connection line and voltage supply
•
HUMIDITY VALUES TOO HIGH
- permanent condensation on the sensor head
⇒
dry sensor probe and check the mounting
manner of the transmitter
- wrong filter type
⇒
adjust filter type to application
Service stations:
refer to back cover side
Name
bracket for installation onto mounting rails:
external power supply unit:
replacement sensor:
mounting flange 12mm:
mounting flange 5mm
(for model H only)
order code
HA010203
V02
FE09
HA010201
HA010208
Name
drip water protection:
radiation shield:
filter caps
d cover in metal
d cover in PC
calibration set
1% calibration
order code
HA010503
HA010504
HA0101xx
D03M
D03P
HA0104xx
EE90/3H
i
REPLACEMENT PARTS / ACCESSORIES:
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:
250mA / T UL248-14
Nominal voltage:
250V
Replacement types:
Series: MSTU 250 Manufacturer: Schurter Order No.: 0034.7109
Series: 374
Manufacturer: Littelfuse Order No.: 374 0250
Sensor Replacement of Soldered Sensors
1.
Switch off the 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
(0.16”)
(from 10mm
/ 0.39”
to 6mm
/ 0.24”
), see drawing.
5.
Solder in the replacement sensor, the active side (see drawing)
has to face the inside.
6.
Screw on the filter cap carefully (in case of pollution replace it by
a new filter cap).
7.
Switch on the supply voltage.
8.
Perform a humidity calibration (refer to 2 point humidity calibration).
•
LED D2 green
- flashes during operation
- lit up if humidity / temperature
sensor is damaged
aktive Seite /
active Side
solder
pins
reduce
4mm
active side