For liquid helium measurement, see our liquid helium level sensors .
Construction is stainless steel.
Operation is capacitance-based using cryogenic liquid as the dielectric. As liquid level changes, the varying capacitance is interpreted by a Cryomagnetics' liquid cryogen monitor as an easily understood readout. For the latest in liquid cryogen level measurement instrumentation, please check out our Model LM-500 Liquid Cryogen Monitor . To order a capacitance-based liquid cryogen level sensor, please refer to the above drawing and specify the active length required. Standard active lengths are available up to 250 centimeters.