Igema NA7-130, Инструкция по установке и эксплуатации

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2. Contents of packing
1. - Standpipe with indicating ledge
- Float and new gasket are packed on the outside of the unit
- Setting magnet is enclosed
Additional equipment (also possible for existing devices):
- Magnetic switch
- Contact bar with reed contacts (Primary element MRK-
…)
- Drain valve
2 Mounting and operating instructions
3. Important information
3.1 Intended use
Magnetic level gauge NA7-45 / NA7-130 :
The magnetic level gauge is a liquid level gauge which can be used for steam boilers and
containers.
The indication is made via a float operated magnetic system.
The product corresponding to the EU 2014/68/EU.
Applied standards as per EN 13445 / EN 12952 / EN 12953 / AD 2000 or ASME-Boiler.
4. Explanations
4.1 System description
The level gauge indicates the level in the boiler indirectly.
4.2 Function
The unit works according to the physical law of the communicating tubes.
The liquid level in the standpipe (2) is the same as the one in the boiler. The liquid level is
transmitted to the indicating ledge on the outside of the standpipe via a float with inner
magnetic system located inside of the standpipe. The magnetic system actuates
simultaneously additionally mounted switches (4) on the standpipe and/or a sensor (5) for
remote liquid level transmission.
Design sketches see chapter 6