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6.2
Important Prerequisite
For accurate calibration and adjustment results it is paramount important to avoid temperature gradients
along the sensing probe, especially for the stainless steel probe which has high thermal conductivity.
Whenever possible, place the entire probe in the reference environment. Otherwise, thermally isolate
the parts of the probe which are not in the reference environment.
6.3
Calibration
The calibration of the EE1950 against a Td reference can be performed either by using the analog
output signal or by connecting the EE1950 to a PC with the HA011017 adapter cable and the EE-PCS
Product Configuration Software. Allow for stabilisation time minimum 30 minutes per calibration point.
6.4
Adjustment Procedure
The adjustment of EE1950 can be performed using the HA011017 and the EE-PCS , free download
from www.epluse.com/configurator.
Fig. 6
EE1950 Adjustment and Configuration
After connecting EE1950 to the PC and starting EE-PCS, press the „Ready" software button for
switching EE1950 to adjustment mode. During the adjustment the EE-PCS shows the RH reading of the
EE1950 and requires a RH reference value for adjustment.
For an accurate adjustment it is utmost important to allow for stabilisation time as suggested by the
EE-PCS.The adjustment of the EE1950 shall be performed against an appropriate RH reference.
See "Calibration Kit - User Guide" at www.epluse.com/ee1950
7
Self Diagnosis and Error Messages
Feedback module
Green and red LED on
for about 1 sec.
Green LED flashing /
Red LED off
Red LED on
Red LED flashes (1Hz)
Red LED flashes very
fast (5 Hz)
Optocoupler closed
Optocoupler open
Namur (Disabled by default)
21 mA / 11 V
10
HA011017
PC
Meaning
acknowledgment for ARC
start / stop
normal measuring mode
electronics failure
probe is not properly
connected or damaged
ARC mode is active
humidity output is frozen /
ARC active
normal measuring mode /
ARC inactive
an error has occurred
Action
The ARC mode is either started or stopped. If the sensor is in the
ARC mode the red LED flashes very fast.
-
Contact the E+E representative.
Contact the E+E representative.
Wait until the ARC cycle is finished,
or interrupt the ARC cycle
Wait until the ARC cycle ist finished.
Check the red LED.
-
Contact the E+E representative.
Operation Manual EE1950 dew point module for high humidity applications
EE1950
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