The CS431 submersible pressure transducer, available from Campbell Scientific Aust measures both water level and water temperature in one compact package and is suitable for hydrological and water quality applications.
It uses piezoresistive strain gage technology to measure water level and an on-board thermistor to measure temperatures.
The CS431 submersible pressure transducer includes a strain gage bonded to a pressure-sensitive diaphragm and as the pressure changes on the diaphragm, the electrical resistance also changes.
Campbell Scientific data loggers measure the resistance and then convert the measured value to the desired units. The CS431 submersible pressure transducer is suitable for CRBasic model data loggers and the older CR10X data logger.