Endress+Hauser Ceraphant PTP31B - 5 Installation; Mounting Dimensions; Installation Conditions; Influence of the Installation Position

Ceraphant PTP31B, PTP33B Installation
Endress+Hauser 15
5 Installation
5.1 Mounting dimensions
For dimensions, see the "Mechanical construction" section in the Technical Information.
5.2 Installation conditions
• No moisture may enter the housing when installing or operating the device, or when
establishing the electrical connection.
• Do not clean or touch process isolating diaphragms with hard and/or pointed objects.
• Do not remove the protector on the process isolating diaphragm until just before
installation.
• Always firmly tighten the cable entry.
• Point the cable and connector downwards where possible to prevent moisture from
entering (e.g. rain or condensation water).
• Protect the housing from impact
• The following instruction applies for devices with a gauge pressure sensor and M12 plug
or valve plug:
NOTICE
If a heated device is cooled during the cleaning process (e.g. by cold water), a vacuum
develops for a short time, whereby moisture can penetrate the sensor through the
pressure compensation element (1).
Device could be destroyed!
‣
In this case, mount the device with the pressure compensation element (1) pointing
diagonally downwards where possible or to the side.
1
1
1
1
A0022252
5.3 Influence of the installation position
Any orientation is possible. However, the orientation may cause a zero point shift i.e. the
measured value does not show zero when the vessel is empty or partially full.
C
A
B
A0024708
Process isolating diaphragm axis
is horizontal (A)
Process isolating diaphragm
pointing upwards (B)
Process isolating diaphragm
pointing downwards (C)
Calibration position, no effect Up to +4 mbar (+0.058 psi) Up to –4 mbar (–0.058 psi)
A position-dependent zero shift can be corrected on the device .