Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART Installation
Endress+Hauser 17
3.3.7 PMP51, version prepared for diaphragm seal mount –
welding recommendation
P01-PMP71xxx-11-xx-xx-xx-000
Fig. 14: Version U1: prepared for diaphragm seal mount
1 Hole for fill fluid
2Bearing
3Setscrew
A1 See the "Welding recommendation" table below
Endress+Hauser recommends welding on the diaphragm seal as follows for the "XSJ - Prepared for
diaphragm seal mount" version in feature 110 "Process connections" in the order code up to, and
including, 40 bar sensors: the total welding depth of the fillet weld is 1 mm (0.04 in) with an outer
diameter of 16 mm (0.63 in). Welding is performed according to the WIG method.
Information on filling
The diaphragm seal must be filled as soon as it has been welded on.
• After welding into the process connection, the sensor assembly must be properly filled with a
filling oil and sealed gas-tight with a sealing ball and lock screw.
Once the diaphragm seal has been filled, the device display should not exceed 10% of the full scale
value of the cell measuring range at the zero point. The internal pressure of the diaphragm seal
must be corrected accordingly.
• Adjustment / calibration:
– The device is operational once it has been fully assembled.
– Once the device has been switched on, the total reset code (7864) must be entered in the path:
"Expert" "System" "Management" "Enter reset code (124)" (see also Section 5.3.7).
The electronics then read all the specific sensor data out of the sensor electronics. The device
then has to be calibrated to the process measuring range as explained in the Operating
Instructions.
Consecutive
seam no.
Sketch/welding groove
shape, dimension as per
DIN 8551
Base material
matching
Welding
process
DIN EN
ISO 24063
Welding
position
Inert gas,
additives
A1
for sensors
40 bar (600
psi)
P01-PMP71xxx-11-xx-xx-xx-001
Adapter made of
AISI 316L (1.4435)
to be welded to
diaphragm seal made of
AISI 316L
(1.4435 or 1.4404)
141 PB Inert gas
Ar/H 95/5
Additive:
ER 316L Si
(1.4430)
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