2132926.07 GB/D/F/E 03/2010
18
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio IS-2X
2132926.07 GB/D/F/E 03/2010
19
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio IS-2X
Specifications
Model IS-20-S, IS-21-S, IS-20-F, IS-21-F, IS-20-H
Weight » Model IS-2X-S/F
kg
Model IS-2X-S: Approx. 0.2 Model IS-2X-F: Approx. 0.35
» Model IS-20-H
kg
Approx. 0.3 (approx. 0.45 with version field case)
8. Adjustment of zero point / span (only for pressure transmitter with clamping nut)
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).
Functional test
Open pressure connections only after the system is without pressure!
Observe the ambient and working conditions outlined in section 7
„Technical data.
Please make sure that the pressure transmitter is only used within the over
load threshold limit at all times!
When touching the pressure transmitter, keep in mind that the surfaces of
the instrument components might get hot during operation.
The output signal must be proportional to the pressure. If not, this might point to a
damage of the diaphragm. In that case refer to chapter 10 „Troubleshooting“.
7. Starting, operation / 8. Adjustment of zero point / span
GB
When designing your plant, take into account that the stated values (e.g.burst pressure,
over pressure safety) apply depending on the material, thread and sealing element used.
*
)
In an oxygen version model IS-21 is not available. In an oxygen version model IS-20 is only available in gauge pressure ranges
≥
0.25 bar with media temperatures between -4 … +140 °F / -20 … +60 °C and using stainless steel or Elgiloy
®
wetted parts.
{ } Items in curved brackets are optional extras for additional price.
Z = Zero
S = Span
Female
connector
Sealing
Clamping
nut
Male
connector
Sealing
Case with
pressure
connection
Recommended recalibration cycle: 1 year
For further information (+49) 9372/132-295
A
B
8. Adjustment of zero point / span
GB
Make sure wires are not cut or pinche during disassembly and reassembly of the connector.
IS-2X-S, IS-20-H: Remove the female connector. Open the pressure transmitter by deta-
ching the clamping nut (see Fig. A ). Carefully remove the male connector from the case.
IS-2X-F, IS-20-H with field case: Open the pressure transmitter by twisting off the fied case
over.
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 procedure 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.
S = Span
Z = Zero
B
IS-20-F, IS-21-F,
IS-20-H with field case:
9. Maintenance, accessories
WIKA pressure transmitters require no maintenance.
Have repairs performed by the manufacturer only.
IS-20-S, IS-21-S, IS-20-H:
Warning
Caution
