Model 801 – EM Flowmeter

Specifications

Model 801 - Flat Type

Data Acquisition

The Model 801 Flowmeters are supplied with a dedicated Control Display Unit that both drives the sensor and provides data display of the measured water velocity. Data is updated at 1 Hz, and may be averaged over any number of seconds from 1 to 600. The display will show real-time speed data at a resolution of 1 mm/s, as well as the result of the data average, and a Standard Deviation figure to give added data confidence. A solid state memory records all results (up to 999 averaged readings), and the data may be downloaded to PC using
the RS232 interface lead supplied.

Calibration

The Model 801 is calibrated at Valeport’s own premises up to speeds of 1 m/s. Higher speed measurements are based on linear extrapolation. Specific high speed calibrations can be arranged at a third party facility on request.

Control Display Unit

Application

The Model 801 is available for use as hand held “Wading Sets” only, with the operator standing in the channel, holding the instrument in position. The system is supplied with 1.5 m wading rod (3 x 0.5 m sections), graduated in cm, and a 3 m
cable from instrument to display unit.

Alternatively, a “top-setting” wading rod system is available, which allows the vertical position of the instrument to be set without removing the wading rods from the water.

Software

System is supplied with CDUExpress Windows-based PC software, for data extraction from the display unit. CDU Express is licence free.

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