Cryomagnetics’ capacitance-based liquid cryogen level sensors are suitable for measuring liquid nitrogen. Construction is stainless steel. Operation is capacitance-based using cryogenic liquid as the dielectric. Outside diameter is 9.52mm (3/8″). Active Sensing Lengths (ASL) of 1 – 193 cm are available with Overall Length (OAL) from 8cm (ASL+7cm) to a maximum of 200cm. Please specify sensor dimensions when ordering.