Adjustment Of Zero Point / Span - SICK PFT Manual De Instrucciones

Operating Instructions

8. Adjustment of zero point / span

We do not recommend to adjust the span potentiometer. It is used for adjustment ex factory
and should not be adjusted by you unless you have adequate calibration equipment at your
disposal (at least three times more accurate than the instrument being tested).
Make sure wires are not cut or pinche
„
during disassembly and reassembly of the
connector.
Remove the female connector. Open the
„
pressure transmitter by detaching the clam-
ping nut (see Fig. A ). Carefully remove the
male connector from the case.
Adjust the zero point (Z) (see Fig. B ) by
„
generating the lower limit of the pressure
range.
Adjust the span (S) by generating the higher
„
limit of the pressure range.
Check the zero point.
„
If the zero point is incorrect, repeat proce-
„
dure as required.
Reassemble the instrument carefully.
„
Make sure all sealings and o-rings are not
„
damaged and correctly installed to assure
the rated moisture ingress protection.
Recommended recalibration cycle: yearly
8013155/ZZV8/2018-06-25
8. Adjustment of zero point / span
(only for pressure transmitter with clamping nut)
A
© SICK AG • Germany • All rights reserved
Female
connector
Sealing
Clamping
nut
Male
connector
Sealing
S = Span
Z = Zero
Case with
pressure
connection
PFT
GB
B
31