EN 12178:2016

Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking EN 12178:2016

Publication date:   Jan 18, 2017

General information

99.60 Withdrawal effective   Feb 28, 2024

CEN

CEN/TC 182 Refrigerating systems, safety and environmental requirements

European Norm

27.080   Heat pumps | 27.200   Refrigerating technology

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Scope

This European Standard specifies safety requirements, safety factors, test methods, test pressures and marking of liquid level indicating devices, referred to throughout this standard as level indicators, for use in refrigerating systems and heat pumps.
It applies to devices connected to refrigerant vessels (e.g. on high-pressure liquid receivers, intercoolers and low-pressure receivers) and to devices connected to other parts of a refrigerating system (e.g. oil-level sight glasses on a compressor).
This European Standard applies to those types of level indicators that are direct and indirect reading devices (e.g. sight glasses, frosting tubes), and includes electrical and pneumatic indicators.
This European Standard describes the procedure to be followed when designing (by calculation or by an experimental design method) level indicator parts subjected to pressure as well as the criteria to be used for the selection of materials.
This European Standard applies to the design of level indicators with respect to pressure containment and describes methods by which the reduced impact values at lower temperatures may be taken into account in a safe manner.
It also gives guidance on some aspects of application and installation.

Related legislation

Legislation related to this standard

2014/68/EU

Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment

Harmonized/Supporting

Life cycle

PREVIOUSLY

WITHDRAWN
EN 12178:2003

NOW

WITHDRAWN
EN 12178:2016
99.60 Withdrawal effective
Feb 28, 2024

REVISED BY

PUBLISHED
EN ISO 21922:2021