2017DIN EN 12178:2017-03 Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking; German version EN 12178:2016
2017DIN EN 12178:2017 Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking; German version EN 12178:2016
2004DIN EN 12178:2004 Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking; German version EN 12178:2003
1970DIN EN 12178 E:1996-01 Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements, testing and marking