The IMCTL (ceramic) and IMSTL (silicon) ranges of submersible dual output level and temperature transmitters, from Impress Sensors & Systems, are suitable for continuous submersion in water. They provide dual independent, 2-wire, 4-20mA outputs: one for level and one for temperature. The sensors offer nominal pressure ranges from 10 to 100mWG (ceramic) and 0.5 to 100mWG (silicon). The higher accuracy IMSTL version uses the latest piezoresistive media-isolated silicon sensing technology and a stainless steel diaphragm. This provides high stability, repeatability and resolution, particularly for high accuracy level and temperature measurement (including V-notch weir flow measurements) in rivers, canals, reservoirs, boreholes and aquifers. The IMCTL uses a ceramic sensor for level measurements, which provides high corrosion resistance, particularly in aggressive media. Applications include level and temperature measurements in tanks, rivers, boreholes and aquifers, as well as environmental monitoring in estuaries and seawater applications (when used with the marine bronze housing).