WIKA 891.34.2189 User Manual
Page 12
GB
9. Service and maintenance / 10. Special instructions ...
SP potentiometer for span
NP potentiometer for zero point
2158991.01
Measuring differential
pressure again
release
valve
actuate
Differential pres-
sure drops to zero
2279453 08/2009 GB/D/F
WIKA Operating Instructions Differential Pressure Transmitter DELTA-trans
12
10. Special instructions for integrated pressure equalising valve or
4-way valve manifold
10.1 Integrated pressure equalising valve
For zero point control on working
processes. Offset errors can be adjusted
using the zero point potentiometer (see
Chapter 9. Service and Maintenance)
Principle of operation
When the button is pressed, the
separation between the measuring chambers is released. The pressure
is thus equalised in both chambers, and the differential pressure is zero.
Releasing the button separates the chambers again and the current differen-
tial pressure is measured.
Position of potentiometers in the electronics case
- 890.09.2190 (44 pages)
- A-10 (96 pages)
- A2G-50 (52 pages)
- A2G-55 (36 pages)
- AC-1 (88 pages)
- C-2 (24 pages)
- D-10-7 (112 pages)
- D-20-9 (51 pages)
- D-20-9 (35 pages)
- DG-10 (112 pages)
- DP-10 (44 pages)
- DPT-10 (96 pages)
- DPT-10 (92 pages)
- GCS-1 (76 pages)
- HP-2 (84 pages)
- IL-10 (31 pages)
- IPT-10 (48 pages)
- IPT-10 (28 pages)
- IPT-10 (36 pages)
- IPT-10 (56 pages)
- IS-20-F (7 pages)
- IS-20-F (43 pages)
- IS-20-H (7 pages)
- UT-10 (42 pages)
- UT-10 (52 pages)
- IUT-10 (78 pages)
- LH-10 (60 pages)
- LH-20 (60 pages)
- LS-10 (60 pages)
- MG-1 (92 pages)
- MH-1 (11 pages)
- MH-2 (9 pages)
- MHC-1 (84 pages)
- N-10 (35 pages)
- O-10 (108 pages)
- OT-1 (60 pages)
- P-30 (92 pages)
- PSA-31 (124 pages)
- PSD-30 (128 pages)
- R-1 (92 pages)
- S-10 (35 pages)
- S-11 (102 pages)
- S-20 (52 pages)
- S-20 (96 pages)
- SL-1 (21 pages)