BINP level meter for cold liquids The method of measurements: change of the capacitance as function of a level of a liquid Originally designed for LN 2.

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Presentation transcript:

BINP level meter for cold liquids The method of measurements: change of the capacitance as function of a level of a liquid Originally designed for LN 2 at the CMD-2 detector Used for LXe calorimeter now Sensor: wire  1.2mm at axis of tube  3mm (inner) capacitance 117 pf (0cm)  212 pf (160cm) 0.6 pf/cm Material: stainless steel and teflon  clean! Electronics: conversion C  f resonance  V

The lever meter for the LXe calorimeter 1- LXe calorimeter 2- short sensor (145 mm) 3- long sensor (1600 mm) 4- teflon insulator (10 cm step) mm stainless steel wire 6- stainless steel tube with inner diameter 3 mm

LN 2 level meter at the CMD-2 10 cm

LXe level meter at the calorimeter