Brooks Instrument's Magentic Level Gauge
Type 810 magnetic level gauges measure liquids, including corrosives or toxics. They feature sealed measurement chambers of stainless steel, PVC, PPH, PVDF or PTFE. They measure liquid level over ranges from 1 ft to 20 ft and longer with multiple sections of instruments if needed. They handle fluid temperatures from -256 ºF to 750 ºF, and pressures as high as 3480 psi.