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7
Adjustment and Calibration
Definitions
Adjustment:
The specimen is brought in line with the reference.
Calibration:
The specimen is compared with a reference and its deviation from the reference is documented.
7.1
Calibration and Adjustment of the Sensing Probes
Depending on the application and the requirements of certain industries, there might arise the need for
periodical probe calibration or adjustment.
7.1.1
Calibration and Adjustment at E+E
Calibration and/or adjustment can be performed in the E+E Elektronik calibration laboratory. Return the
sensing probes for adjustment and calibration at E+E. Please see www.kalibrierdienst.at for information
on the scope of calibration and contact your E+E local sales representative for advice.
7.1.2
User Adjustment and Calibration
E+E Elektronik provides qualified references for RH, T, and CO
• E+E Humidity Calibrator Humor 20, please see the data sheet at www.epluse.com/humor20
• Humidity Calibration Kit, please see data sheet at www.epluse.com/EE07
• Calibrated salt solutions, please see "Calibration Kit - User Guide" at www.epluse.com/EE07
• Hand-held instrument for various measurands, please find details at www.epluse.com/omniport30
Please contact your E+E local sales representative for further information.
7.2
Replacement and Maintenance of the Sensing Probes for EE244
Replacement:
For replacement probes see the EE07 and EE871 data sheets at www.epluse.com/EE240.
Maintenance:
The filter cap of EE07 RH/T and of EE871 shall be replaced as needed with an E+E original one. A
polluted filter cap causes longer response time.
7.3
Cleaning of the Sensing Head of the EE07 RH/T Probe
Use in polluted environment might arise the need for cleaning the sensing head and replacing the filter
cap. In such a case please see "Cleaning Instructions" at www.epluse.com/EE240.
7.4
Replacement of the RH and of the CO
The RH and the CO
as in case of drift caused by polluted and aggressive environment.
Replacement procedure:
• Open the EE245 enclosure, see chapter 4.2.4 EE245 Mounting
• Power off the EE245 by removing one battery, if battery powered.
• Carefully remove the module by pulling it straight upward off the main electronics board, see Fig. 9.
• Plug in the replacement module. Take good care to not bend or break the connecting pins.
• Power on the EE245 and close the enclosure, see chapter 4.2.4
7.5
Functional Test for the EE244 and the entire EE240 Wireless Sensor
Network
A test of correct function and accuracy of the wireless network can be easily performed with the optional
reference probes, see accessories in the EE240 data sheet. The reference probes supply fix values
for RH and T. Simply plug the reference probe instead of any sensing probe of EE244 and check the
indication on the transmitter display or / and the data received by the base station.
24
modules of the EE245 are pluggable and can be easily replaced if needed, such
2
probe calibration:
2
Measuring Module of EE245
2
User Manual EE240 Wireless Sensor Network
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