ROTRONIC ATEX - Manual (Page 16)

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Attention !
The temperature dependence of the ROTRONIC humidity standards is automatically compensated between
5 and 40 °C by the HygroPalm, when the option RHS in the menu 8.1 is selected.
c) Start with the 35 %rh calibration point and, if necessary, adjust with the HygroPalm; the second, third and fourth
calibration step then follows and, if necessary, adjustment with the HygroPalm (80 %, 10 %, 0 %rh).
Calibration -/adjustment steps:
1. Connect the instruments to the power supply.
2. Plug the service cable into the 5-pin service plug socket of the PCB nominated SPB-5 and connect it with the HygroPalm.
3. Unscrew the screw cap of the calibration device.
4. Unscrew and remove the filter element. The slotted cap remains on the probe and serves as sensor protection.
Introduce the probe into the calibration device as far as it will go and secure by turning the knurled screw.
5. Place a textile pad in the screw cap.
6. Shake the ampoule until the entire liquid is in the wide part of the ampoule.
7. Break off the neck of the ampoule at the predetermined breaking point (white line) and empty the entire contents into the
middle of the textile pad (possibly tap a little).
8. Immediately mount the screw cap from below into the calibration device.
9. Let the calibration device on the probe for about 1 hour.
10. Adjustment according to the operating instructions of the HygroPalm
11. Unscrew the screw cap from the calibration device.
12. Remove the textile pad and dispose of it with the household refuse.
(The textile pad is designed for one-time use and must not be used again.)
13. Wash out the screw cap thoroughly under running water and dry it carefully.
14. Repeat the process (Items 5...13) with the 80 %rh, 10 %rh, 5 %rh or 0 %rh humidity standards.
15. Remove the calibration device, replace the filter element and fasten the screw. Install the transmitter again.
6.4 Check of the temperature transmitter
A temperature adjustment is usually not required. When in doubt about the correct calibration, you may check the transmitter
and adjust it, if necessary. As reference, use an accurate temperature probe or an accurate thermometer.
Material required:
- Reference probe
- Service cable (type AC1628)
- HygroPalm2 or 3
Calibration steps:
1. Connect the instruments to the power supply.
2. Loosen the screws and remove the cover plate.
3. Put the service cable into the 5-pole socket and connect it with the HygroPalm.
4. Hold the reference probe or thermometer next to the transmitter (wall- or duct type).
5. Wait for the display to become stable.
6. Adjustment according to the operating instructions of HygroPalm.
7. Remove service cable and remount the cover plate.
6.5 Contaminated filters
A polluted filter can cause measurement errors and extend the adapting time. Dependent on the degree of pollution, the filter is to be
cleaned periodically or, if necessary, to be replaced.
In order not to damage the sensors, unscrew the filter for cleaning.
Clean the filter with soap water, alcohol or a cleaning agent suitable for removing the contamination and wash it thoroughly at the
end with water. Do not screw the filter back on to the probe until it is completely dry. Replace filters which can no longer be cleaned
by new ones. Should the sensors be severely contaminated despite the protecting filters, then we recommend having these replaced
by our service department.
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