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Field Service made easy
   

Each H290D transmitter features a service connector that can be accessed without disturbing the output signal. Cable ACRLXB5 is used to connect the service connector to a HygroPalm 3 indicator.
 

Field Calibration

Using the HygroPalm 3 indicator and the service cable, the following can be done:

  1. 1-point adjustment of the transmitter against a reference probe connected to the HygroPalm.

  2. Single- or multi-point adjustment against a reference environment (requires a humidity generator). When no humidity generator is available, ROTRONIC offers     easy-to-use certified humidity standards to generate known humidity values. See below for details.

Validation of the signal loop

By displaying the signals of the transmitter with the HygroPalm 3, the entire measuring loop can be validated, including transmitter, wiring and central processing unit.

Calibration standards

Certified Humidity Standards: if you do not have access to a humidity generator, the ROTRONIC humidity standards offer a reliable and convenient way to generate a reference humidity condition during probe calibration.
The ROTRONIC standards are shipped with an internationally accepted certificate, meeting in full the requirements of quality systems such as ISO 9000. The standards are available in boxes of 5 glass ampoules of the same value, and can be stored indefinitely. Standards in the range of 5 to 95 %RH are non-saturated aqueous salt solutions.
The 0 %RH humidity standard is made of small granules of a highly porous ceramic. A Material Safety Data Sheet is available for each standard.
Calibration devices

ER-15 calibration device: this is a small airtight container that fits on the probe and seals around the humidity sensor. During calibration, a known reference humidity is produced inside the calibration device by means of a humidity standard.