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Operating instructions for EE310 Humidity / Temperature 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
Cleaning the sensing head / filter replacement
In case of dusty, oily and polluted environment:
• The filter cap shall be replaced once in a while with an E+E original one. A polluted filter cap
causes longer response time of the device.
•
If needed, the sensing head can be cleaned. For cleaning instructions please see
www.epluse.com/EE310
.
6.3 Sensor replacement
A damaged capacitive humidity sensing element can be replaced by the user against an E+E
replacement sensor, see chapter
8 Replacement parts / Accessories
.
Sensor replacement procedure:
•
Switch off supply voltage.
• 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.
• Perform a 2 point humidity adjustment of the EE310 with the EE-PCS Product Configuration
Software or with the display and push buttons.
•
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 replacement.
