Electronic pressure sensor
PI17xx
13
u
The sealing area on the flange/socket must be flush with the tapped hole and have a surface
characteristic of at least Rz = 6.3 (observe DIN EN ISO 1179-1).
5.1 Use in hygienic areas according to 3-A
The following applies to units with 3-A certification:
u
Only use adapters with A-3 certification for the process
connection.
u
Do not install the unit at the lowest point of the pipe or tank
(position 5) so that the medium can run off the area of the
measuring element.
5.2 Use in hygienic areas to EHEDG
In case welded adapters are used, the food contact surface must be smooth (surface roughness
Ra < 0.8 µm) and the welding has to be done according to EHEDG Guideline 9 and 35.
The device is suited for CIP (cleaning in process) when installed correctly.
u
Observe the application limits (temperature and material resistance) according to the data
sheet.
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Ensure that the installation of the device in the system complies with EHEDG guidelines.
u
Use self-draining installation.
u
Only use process adapters permitted according to EHEDG with special seals required by the
EHEDG position paper.
The gasket of the system interface must not be in contact with the sealing point of the sensor.
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When mounted in a tank, the installation must be flush mount. If not possible then direct water jet
cleaning and cleaning of dead spaces must be possible.
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Leakage ports must be clearly visible and must be installed facing downwards for vertical pipes.
1
L
D
1:
Leakage port
u
To avoid dead space adhere to the dimensions:
L < D
