Maintenance and servicing
5.8 Cleaning
SITRANS P DS III
Service Manual, 06/2014, A5E34219855-01
51
1. Clean residues off the thread of the housing.
2. Push the measuring cell PCB through the threaded hole.
3. Turn the measuring cell into the housing until an overhang of 2.6 mm ± 0.75 remains.
The ribbon cable must be present as a loop between the two feed-through pins, and must
follow every rotation of the cell.
Make sure that the mounting flange is correctly orientated on the differential pressure cell.
The arrow
② must remain visible within the marked area ①.
4. Work from here on in the reverse order as described in "Procedure for replacing the
measuring cell".
5. Close the device as described in Chapter Closing the device (Page 26).
6. Following a replacement, permanently obliterate the hardware ID on the nameplate if
applicable.
7. Write the new hardware ID on the nameplate.
8. Following replacement of the measuring cell, carry out an insulation test between the
short-circuited input terminals and the protective earth connection. The insulation
resistance should have a value greater than 10 MOhm.
Danger of explosion in hazardous areas. Device may overheat due to dust build up.
• Remove dust layers in excess of 5 mm.
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