12
User Manual EE371 Compact Dew Point Senor
Adjustment
The adjustment improves the measurement accuracy of a device. The specimen is compared with the
reference and brought in line with it. An adjustment can be followed by a calibration which documents
the accuracy of the adjusted specimen.
The dew point temperature adjustment of EE371 can be performed with the free EE-PCS Product
Configuration Software, free download at www.epluse.com/configurator.
7.3 Dew Point Adjustment by the User
Dew point adjustment by the user is possible only at low dew points. The adjustment can only be
carried out if the difference between the ambient temperature and the reference dew point temperature
is <-60 °C.
Example:
Ambient temperature = 20 °C
Reference dew point temperature must be lower than -40 °C.
8 Maintenance
8.1 Cleaning the Sensing Element
Caution:
Never touch the sensing elements.
Any attempt to clean the sensing elements mechanically such as rubbing or brushing leads certainly
to their irreversible damage.
Please refer to the “Cleaning Instructions”, available online at the E+E Download-Center.
8.2 Filter Replacement
A contaminated filter cap should replaced by a new one. The order number for a new filter is HA010103.
When replacing the filter, please note the following:
Unscrew the filter cap very carefully to avoid damaging the sensing element.
Handling the filter might clog the pores. Use gloves to screw on the new filter.
Filter cap
Sensing element
Fig. 8
EE371 filter and sensing elementr
8.3 Self-Diagnosis and Error Messages
Self-diagnosis via LED on the circuit board:
Power LED (green):
flashing
EE371 is correctly powered / the microprocessor is active
constantly lit
Electronics defect => please contact the producer
LED D1 (blue):
flashing
The sensing element is wet (condensation)
constantly lit
The sensing element is damaged
Self-diagnostic via display (option):
Error 1
The dew point sensing element is damaged
Error 2
The sensing element is wet (condensation)
Error 3
The temperature sensing element is damaged
Error 4
Short circuit on the temperature sensing element
