Madison Company”s MAD4500 and MAD4510 hydrostatic pressure level sensors are approved to UL/cUL913 (CSA 157) Class I Div 1, Groups C and D for use in intrinsically safe areas with an approved barrier. The sensors are constructed from high-strength stainless steel and are suitable for harsh environments, both indoors and outdoors. They are compatible with a range of liquids and are a good fit for such applications as ground water level depth measurement; earthen and concrete dams; liquid tanks; gasoline and diesel fuel tanks; irrigation; and wastewater canals. The sensors support liquid pressure up to 100 PSIG. Other benefits include a wide operating temperature range and EMI/RFI protection. The sensors are part of Madison”s PR Series, which also includes Madison-Omni(R) pressure sensors with integrated programmable displays and the Madison-Omni(R) differential-pressure transmitter.