WIKA MH-4 Manual De Instrucciones página 7

4. Mounting
Mounting the instrument
The max. torque depends on the mounting point (e.g. material and shape). If you have any questions,
please contact our application consultant.
→ For contact details, see chapter 1 "General information" or the back page of the operating
instructions.
1. Seal the sealing faces.
2 At the mounting point, screw the pressure sensor in hand-tight.
.
3 Tighten with a torque wrench using the spanner flats.
.
Hexagon at the case, spanner width 22 mm:
■
- Open-ended spanner: 30 Nm ±5 %
- Socket wrench: 50 Nm ±5 %
Optional hexagon at the process connection, spanner width 27 mm:
■
- Open-ended spanner: 50 Nm ±5 %
- Socket wrench: 50 Nm ±5 %
The correct torque depends on the dimensions of the connection thread and the seal used (form/material).
Operation with version MH-4 (v) with vented electrical output
The instruments must not be sealed at the venting, e.g. painted over, otherwise the pressure compensation to the
environment is not guaranteed and the accuracy cannot be maintained.
WIKA operating instructions pressure sensor, model MH-4
Hexagon (SW 22) integrated
into case
⬡
22
Additional hexagon (SW 27) above
the process connection
⬡
27
EN
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