WIKA MH-4 Manual De Instrucciones página 8

4. Mounting
Socket wrench suitability
Hexagon (SW 22) integrated into case Additional hexagon (SW 27) above the process connection
EN
⬡
22
⬡
27
4.2 Electrical mounting
Voltage supply
→ For auxiliary power, see product label
→ For further details on electrical mounting, see IN 00.50
For instruments without UL, CSA or cURus approval:
This equipment is intended for operation with low voltages, which are separated from the AC 230 V (50 Hz) mains
voltage or voltages greater than AC 50 V or DC 120 V for dry environments. A connection to an SELV circuit is
recommended, or alternatively to circuits with a different protective measure in accordance with IEC 60364-4-41
installation standard.
For instruments with North American certification per UL/CSA IEC 61010-1:
The supply for the pressure sensor must be made via a limited-energy circuit in accordance with section 9.4 of
UL/EN/IEC 61010-1 or LPS in accordance with UL/EN/IEC 62368-1 or UL/EN/IEC 60950-1 or Class 2 in accordance
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WIKA operating instructions pressure sensor, model MH-4