... move up to trigger the mechanical switch. When the liquid level decreasing, displacer emerges from liquid level, spring receives that added force, and ... to former state by action of first magnetic switch. Technique Parameter Accuracy: Liquid level control±4mmNominal pressure: 6.3MPa, 10MPa, 16MPa, 25MPa ... safe ExiaIICT4~T6; explosion proof: ExdIICT4~T6Enclosure: IP67 UQK6200 Displacer level switch