Pressure Systems, Inc.,

waterMONITOR submersible datalogging level transducer
The waterMONITOR submersible datalogging level transducer takes measurements in an absolute reference pressure format. The sealed reference design simplifies maintenance, since no vent tube or associated desiccant filter is required to guard against moisture incursion. This transducer is capable of being modified into a baroMONITOR, which collects corresponding barometric pressure readings that can compensate for errors in absolute level measurements caused by changes in barometric pressure. The transducer is suitable for many groundwater and surface water applications, such as boreholes, tanks, rivers, lakes and streams. Capable of storing 600,000 measurements, the units have full-scale level ranges from 10 ft to 692 ft of water, with an accuracy of up to ±0.05% FS TEB (total error band) over the compensated temperature range of 14_F to 104_F. The baroMONITOR has a pressure range of 8 to 16 psia. Sampling modes include linear, linear averaging, event and logarithmic. Transducers feature programmable sampling rates of up to 15 readings/s; incorporate internal non-volatile memory of 2 MB or 4 MB; and upload data at 100 scans/s at a baud rate of 19,200, with a pressure and temperature time stamp.