Transmitter With Sensor Probe; Interruption Of Power Supply During The Measurement Process; Ending The Calibration Or Adjustment Process - E+E Elektronik HUMOR 20 Notice D'utilisation

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7.2

Transmitter with sensor probe:

Due to its working principle, the HUMOR 20 has a slightly higher temperature
than the surroundings. Therefore, for the measurement, make sure that the probe
temperature can be aligned with the measuring chamber temperature.
For precise measurements, the cover-feedthrough should be adapted to the
probe diameter as much as possible. In order to guarantee this fit, there are
various cover-feedthroughs available for selection (see Appendix Accessories).
1. Place suitable measuring chamber cover (watch position and diameter of
the feedthrough) and tightly fasten both knurled nuts.
2. Introduce specimen(s) through the feedthrough(s) into the measuring
chamber and tightly fasten threaded joint(s).
3. If feedthroughs are not equipped with a probe, these feedthroughs are
to be sealed by included blind plugs.
4. Connect specimen(s) to the power connections of the HUMOR 20
(24V DC) or to an external power supply section.
5. Apply output signal of the specimen to the internal measurement
inputs of HUMOR 20 (Unit1 RH, Unit2 RH).
Select the measuring range according to the output signal of the
6.
specimen.
Additionally the temperture of the measuring chamber can be displayed
by selecting it with the measuring range switch.
7. Select desired humidity - desired value with the controller.
8. The typical deviations and stabilization times for the specimen must be
taken from documentation of the manufacturer (we advise min. 15 min.).
9. Compare the values shown in the display with the output signal of the
measurement transmitter.
7.3 Interruption of power supply during the measurement
process
For longer loss of power (>5 min.), the rotating head must be released (pulled up)
and turned all the way to the left. Furthermore, the media supply should be clam-
ped. After restoration of power and execution of the warm-up phase, the measu-
rement can be started again.
7.4

Ending the calibration or adjustment process

1. Release the rotating head of the controller (pull up) and turn all the way to
the left and wait until RH >= 90% is displayed.
2. Remove the media supply (compressed air / N2).
3. If long downtimes are expected, it is recommended to completely empty
the distilled (deionized) water. For the steps for this procedure, see
Maintenance - Removing water.
4. Turn off the main switch.
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