BA_005_2019-05_10.00 Pressure transmitter COMPACT
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4.1 Zero-point correction
In the case of the field housing version, the potentiometers are encapsulated and can be
accessed through the clamping plate. In the case of plug versions and the cable-
connection version unscrew the union nut and remove the plug insert by carefully lifting it
out. The internally-fitted zero and span potentiometers can be accessed from above
through the potting. Trim them using a screwdriver (1.5 x 40) (10 turns = ± 5 % of measur-
ing range). Span adjustment requires a precise reference pressure.
Figure 2: Zero-point correction
4.2 Devices with Diaphragm Seal
Remove the protective cap or protective wrapping from the diaphragm only just before in-
stallation to prevent contamination or damage.
The diaphragm must not be touched. Do not place the device on its diaphragm. Even
small scratches or deformations may negatively influence the zero point or other charac-
teristics of the device.
Pressure transmitter and diaphragm seal are a closed system that must not be separated.
You can find further information about diaphragm seals in the document TA_031 on
www.labom.com.
4.3 Maintenance / Service
When properly installed in accordance with applicable specifications, this device is
maintenance-free. However, we recommend an annual recalibration of the device.
In the event of any damage or defect the customer cannot replace or repair any compo-
nents or assemblies.
