LIQUID LEVEL GAUGE Russian patent published in 1999 - IPC

FIELD: test of liquid level in various technological apparatuses. SUBSTANCE: liquid level gauge includes float with through hole embracing vertical guiding tube with disc on end which houses hermetically sealed reed relays. Hermetically sealed reed relays and magnets are anchored on bar inside tube facing opposite directions, relays are located in field of action of magnets which interact with internal wall of float manufactured from ferromagnetic alloy. Length of wall is bigger than distance between hermetically sealed reed relays which determine maximum permissible deviations of upper and lower levels of liquid from preset one. For expansion of technological capabilities of gauge nonmagnetic tube with float is mounted on cover of tank to change its position by height and is fitted with additional limiter of upward travel of float in the form clamp so anchored on tube that ferromagnetic tube is fixed in extreme upper position by clamp and interacts with upper hermetically sealed reed relay and magnet determining upper maximum permissible level of liquid. EFFECT: enhanced authenticity of test and expanded technological capabilities of level gauge. 2 cl, 1 dwg