Calibration Procedure for ROTRONIC Digital Products and Service Cable Overview Contents: Procedures: ......................2 General recommendations ................2 Sources of errors....................2 Periodic probe calibration..................2 Reference adjustment by HygroPalm 3 handheld instrument ......3 Probe adjustment with calibration device and Humidity Standard .....3 Cable Overview ......................5 HygroPalm connected to PC ................5...
1.3 Periodic probe calibration The Pt 100 RTD temperature sensor as well as the electronics are very stable and normally do not have to be adjusted after the factory-calibration.
Menu key will bring you back. 1.5 Probe adjustment with calibration device and Humidity Standard ROTRONIC provides easy-to-use, certified humidity standards for those customers who do not have access to a humidity generator. To use these standards, you will need a calibration device that is suitable for your probe.
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Certified Humidity Standards The ROTRONIC certified standards are available in boxes of 5 glass ampoules of the same value, which can be stored indefinitely. Standards in the range of 5 to 95 %RH are non- saturated aqueous salt solutions that are precisely titrated at our factory for the right concentration.
Cable Overview 2.1 HygroPalm connected to PC Service Cable Palm 2 Palm 3 Possible Functions Communication by RS232 between Palm and PC, Configuration of Palm with RS232 1 point probe adjustment of probe 1, probe 2 or both at the Cable same time Multi point probe adjustment of...
2.3 HygroPalm connected to M- & Roline-L Series Service M23/M33 L-1x Possible Functions Cable Display the measurement values of any probe connected to the M2 / M3 transmitter Display the status (configuration, serial number, RS status, probe serial number, firmware version etc.) 1-point adjustment of any digital probe respectively transmitter, using the ACRLXB5...
M1-Series & Roline-L connected to PC via HygroPalm M1xW Possible Accessories Device M1xD Functions required Scaling of output signals PC, HW3 Service cable Adjustment of digital/analog software, ACRL001 converter HygroPalm, ACRL005 AC1622 or Service cable compensation ACRL010 Docking Station Simulation of analogue outputs ACRL020 Note: Use the appropriate cable according to the output signal of the transmitter that...
2.7 M1S- & Roline-LxS Series connected to PC via MOK-WIN and ACRLXB5 M1xS Possible Device L1xS Accessories required M1xS Functions Service cable Display the measurement values of the M1 / L1x transmitter 1-point adjustment using a PC running MOK-02-WIN RHS humidity standard. HW3 software Multi- point adjustment using AC1625...
2.8 Frequently asked questions Question: I am using at present a ACRL010 on a HygroPalm 3, input 1. I plug into the M-series. Input 2 is connected to a MOK-02-B5 with my reference HygroClip. I read the unit and compare the value with the value of the HygroClip on input 2.
Theory on calibration 3.1 Multipoint adjustment An ideal characteristic line of a sensor would be absolutely straight. Output A real characteristic line of a humidity sensor curve is not straight, but slightly bent. Hence, the aim must be to achieve a linearisation. Output Relative humidity Adjustment points...
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As first step to achieve this, the offset value must be set correctly. This is usually done at 35 %rh. Output Ideal curve Before adjustment After adjustment Relative humidity (10) Adjustment points The offset is now adjusted, the blue line goes through the 35 % point. As the line is not going trough zero and maximum, the slope and linearity must be adjusted next: The slope will be set at 80 %.
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Next, the linearity between 30 and 10 % must be set: Output Fix due to 80% adjustment Fix due to 35% adjustment Relative humidity Adjustment points If measurement is required below 10%rh, the 4 point should also be set. Usually, this is done at 0 (0.5 %rh Output e.g 80%...
3.2 Single point Adjustment If a one point adjustment only is performed, the measured values are accurate around the selected point. But as slope and linearity are not adjusted, the ranges that are far away from the adjusted point are not very accurate. Offset of the charachteristic Output...