Endress+Hauser Deltabar S PMD75 Einbauanleitung Seite 4

Flanges and gaskets
Disassembly of flanges and gaskets
• After an exchange of flanges or gaskets, the technical characteristics will be outside the specifications, the instrument will measure with slightly
reduced accuracy.
The error rate can be max. 3 mbar, this is independent form the measuring range.
Note: Zero error can be corrected in the operating menu group calibration field position calibration.
• The specifications shown in technical data sheets can only be accomplished in the regular manufacturing process.
The reason is a lack of conditions available in normal production, such as controlled temperature, adjusted air pressure, constant air humidity.
• Follow exactly the description in order to minimize the measured error.
1
18/19 mm
Re-assembly of sensor assembly
1
5
18 mm
x Nm
1. Clean the gaskets and inner surface of both flanges carefully. No sealing surface may be damaged or show any marks or dents.
3. 2.
The mounting position of the sensor is optional. The markings of the pressure surfaces LP and HP are visible on both sides of the sensor.
Clamp the flanges tight and parallel to the measuring cell (i.e. with a vise).
3.
4. Depending on the gasket and pressure version the screws were secured with lock washers or special screws, covered with glue, are used.
If the original screws are used again or if copper gaskets are mounted, it is necessary to place lock washers between the flange and the nuts.
Tighten the screws alternately in a crosswise manner. Please observe the tightening torques and holding time listed in the following table.
5.
Secure the screwed connection with locking varnish.
6.
4
2
Flange01
2
Flange05
1 3
4 2
3
1
4 2
3
Flange02
3
Flange06
6
180°
Flange09
4
Flange03
4
18 mm
Flange07
Flange10
Endress + Hauser
Flange04
Flange08