FISCHER NK10 B, Руководство по эксплуатации

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2 | Product and functional description FISCHER Mess- und Regeltechnik GmbH
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2 Product and functional description
2.1 Delivery scope
• NK10 according to specification (see order code)
• Operating Manual
• SIL safety manual for version NK10 … U0600
2.2 Use as intended
The NK10 fill level limiter is used in thermo-technical and process plants as a
safeguard against the fill level falling below the lowest permissible level. As a
limiter the device conforms to the requirements of DIN 4754.
The devices in this series are...
• type-tested in compliance with DIN 4754-3
• certified to DNVGL-CG-0339
• Functional safety as per IEC 61508/61511
• certified to directive 2014/68/EU
Copies of the certificates can be found in the appendix to the operating manual.
2.3 Function diagram
1
2 3
6
4
9
8 7
10
approx. 10 mm
approx. 60 mm
5
Fig. 1: Function diagram
1 Swimmer 2 Swimmer rod
3 Metal bellows 4 Test button
5 Switch lever 6 Micro-switch S1
7 Cable screw connection 8 Flange and counter-flange
9 Welding socket 10 Tank