FST Series Field Calibration and Loop Validation

Specifications | Diagrams | Installation | Accessories| Field Service

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service cable ACRLXB5

Each FST series transmitter features a service connector that can be accessed without disturbing the output signals.

CableACRLXB5 is used to connect the service connector of the transmitter to probe input 2 of the HygroPalm 3 portable indicator.

Field Calibration

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

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

b) 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: transmitter, wiring and central processing unit.

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.

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.