Campbell Scientific, Inc. offers: CS477-L radar water-level sensors, CS475-L radar water-level sensors, CS470 bubble water level sensors, CS460-L pressure transducers, and CS450-L pressure transducers. These sensors have operating temperatures from -40 to +80°C, their output can be read by Campbell Scientific dataloggers, and they feature a measurement range of 0 to 230 ft. CS475-L features an SDI-12 signal, CS470 has an accuracy rating of ±0.02 ft, CS460-L has several output options, and CS450-L features a stainless steel casing configuration. Campbell Scientific also offers: CS455-L pressure transducers, CS431-L water level/temperature sensors, SR50A-L sonic ranging sensors, etc.