Sealed reference simplifies transducer maintenance
A
Pressure Systems product story
Edited by the Engineeringtalk editorial team
Mar 2, 2006
Submersible datalogging level transducer has sealed reference design to simplify maintenance, since no vent tube or associated desiccant filter is required to guard against moisture incursion.
Pressure Systems has introduced the Watermonitor submersible datalogging level transducer 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.
A configuration of this transducer, the Baromonitor, has been developed to collect corresponding barometric (atmospheric) pressure readings.
These measurements are used to compensate for errors in the absolute level measurements induced by changing barometric pressure.
The error compensation for the barometric pressure is executed under the control of K-Ware, the firm's Visual Basic-based software.
K-Ware guides users through the process of extracting measurements from the transducers and presenting the data in various formats for analysis as well as for export to another software program.
The software package comes with both the Watermonitor and Baromonitor.
Upgrades are available on Pressure Systems' web site at no charge.
The Watermonitor and Baromonitor are for groundwater and surface water applications in areas such as boreholes, tanks, rivers, lakes and streams.
The transducers can each store up to 600,000 level, temperature and time stamp measurements.
The units have full-scale level ranges from 3 to 210m H2O with an accuracy of up to +/-0.05% FS total error band over the compensated temperature range of -10 to +40C.
The Baromonitor has a pressure range of 55 to 110kPa.
The transducer electronics, along with two replaceable AA batteries, are completely sealed in a 1.9cm stainless steel or titanium housing.
The transducers' selectable sampling modes include linear, linear averaging, event and logarithmic.
The units also have programmable sampling rates of up to 15 reading/s, incorporate internal non-volatile memory of 2 or 4Mbyte, and upload data at 100scans/s at a 19,200baud rate, with a pressure and temperature time stamp.
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