WIKA FSD-3, Operating Instructions Manual

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14 WIKA operating instructions flow switch, model FSD-3
EN
14153887.01 09/2016 EN/DE/FR
5.1.6 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.
If a process connection adapter (optional) is used, first screw it into the mounting point by hand and then tighten it
using a torque spanner. Use enclosed sealing.
1. Depressurise the system and switch off the flow.
2
.
Seal the process connection (→ see “Sealing variants”).
3
.
At the mounting point, screw the flow switch in hand-tight.
4
.
Tighten with a torque spanner using the spanner flats.
5.2 Electrical mounting
Requirements for voltage supply
Power supply: DC 15 ... 35 V
The power supply for the flow switch must be made via an energy-limited electrical circuit in accordance with section
9.3 of UL/EN/IEC 61010-1 or an LPS to UL/EN/IEC 60950-1 or class 2 in accordance with UL1310/UL1585 (NEC or
CEC). The voltage supply must be suitable for operation above 2,000 m above sea level, should the flow switch be
used at this altitude.
Requirement for shielding and grounding
The flow switch must be shielded and grounded in accordance with the grounding concept of the plant.
The instrument must be grounded via the process connection.
Connecting the instrument
1. Assemble the mating connector.
→ see pin assignment
2
.
Establish the plug connection.
5. Commissioning, operation