26
Operating instructions for EE360 Moisture in Oil Transmitter
6.1.3 Solving typical problems
Error description
Likely causes and solutions
Display shows incorrect
values
Error during re-adjustment of the transmitter.
→.Reset.to.factory.calibration.and.repeat.the.adjustment.routine.
Filter soiled
→.Replace.filter.
Output.configured.incorrectly
→.check.configuration
Long response time
Filter soiled
→.Replace.filter
Inappropriate.filter.type
→.Contact.E+E.representative.for.advice.
High humidity values -
red LED blinks
Water in sensing head
→..Investigate.the.cause.for.water./.condensation...
Contact E+E representative for advice.
Inappropriate.filter.type
→.Contact.E+E.representative.for.advice.
Tab. 3
Self diagnosis
6.2 Sensor replacement
A damaged capacitive humidity sensing element can be replaced by the user against an E+E replace-
ment sensor, see chapter
8 Replacement parts / Accessories
.
Sensor replacement procedure:
•.
Switch off supply voltage.
•. Loose.the.lock.of.the.filter.cap.with.an.appropriate.tool.(see.
Fig. 26 Loosen the lock of the filter cap)
.
•. Remove.the.filter.cap.from.the.tip.of.the.probe.with.utmost.care.not.to.touch.the.sensors.
•.
Solder off the damaged humidity sensing element.
•.
Shorten the leads of the replacement sensor from 10 mm / 0.39” to 6 mm / 0.24”.
•.
Solder in the new humidity sensor, the active side shall face the temperature sensor.
•. Screw.on.a.new.filter.cap.with.upmost.care.not.to.touch.the.sensors.
•. Fix.the.filter.cap.by.pressing.in.the.lock.
•. Perform.a.2.point.humidity.adjustment.of.the.EE360.with.the.EE-PCS.Product.Configuration.Software.
or with the display and push buttons.
Fig. 26
Loosen the lock of the filter cap
•.
When replacing the humidity sensor element the factory calibration is not any longer valid.
•.
The humidity sensor element is an Electro Static Discharge (ESD) sensitive components and shall be
handled as such.
•.
Hold the humidity sensor element only by the leads. Never touch the active surface of the sensor.
The.replacement.of.the.humidity.sensor.element.may.be.performed.by.qualified.staff.only..
Since the performance of the instrument after the sensor exchange depends on the overall accuracy of
the adjustment procedure, it is strongly recommended to return the device to E+E for sensor replace-
ment.
