Water Current Meter (Miniature type)
Shallow Water, Small Channel & Stream Velocity Measurement The Balaji HydroMet BHM-H-CM4 is a compact miniature water current meter for shallow open or closed channels, small irrigation canals, streams and hydraulic laboratories. Also known as a dwarf current meter, it measures from 0.025 m/s to 5.0 m/s with the selected propeller.
- Category : Water Current Meter
- Model Number : BHM-H-CM04
- Brand : Balaji Hydromet
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Water Current Meter (Miniature type)
What is the BHM-H-CM4 Miniature Water Current Meter?
The BHM-H-CM4 is a compact mechanical current meter used for measuring point water velocity in shallow streams, irrigation channels, small canals, open channels, hydraulic laboratories, and physical hydraulic models.
What is the measuring range of the BHM-H-CM4?
The meter measures water velocities from 0.025 m/s to 5.0 m/s, depending on the propeller fitted to the instrument.
Why is it called a miniature or dwarf current meter?
The BHM-H-CM4 features a compact body and small interchangeable propellers, making it ideal for shallow water conditions and confined measurement locations where standard-size current meters may be difficult to use.
How does the miniature current meter measure velocity?
Water flow rotates the propeller, and a dry reed-contact system generates electrical pulses corresponding to the propeller's revolutions. These pulses are processed by the DVI-V1 Direct Velocity Indicator/Logger, which applies the meter's calibration equation and displays the water velocity directly in metres per second (m/s).
Where can the BHM-H-CM4 be used?
Typical applications include shallow streams and rivers, irrigation canals and distributaries, drainage channels, riverbank measurements, hydraulic laboratories, physical model studies, and water-resource surveys.
Does the BHM-H-CM4 provide a direct velocity display?
Yes. The instrument can be supplied with the DVI-V1 Direct Velocity Indicator/Logger, which displays water velocity directly and allows field data storage for later analysis.
Who manufactures the BHM-H-CM4?
The BHM-H-CM4 is manufactured by Balaji HydroMet, India, for hydrological, irrigation, environmental monitoring, research, and water-resource measurement applications.
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Brand Balaji HydroMet (BHM) Model BHM-H-CM4 Type Miniature / Dwarf Water Current Meter Measurement Principle Mechanical propeller with dry reed contact Measuring Range 0.025 m/s to 5.0 m/s, dependent on selected propeller Accuracy ±1% of measured value with correctly selected propeller Current Meter Body Corrosion-resistant stainless steel or nickel brass Propeller Material Anodised aluminium Body Length 146 mm Standard Mounting Locking screw for 9 mm shaft Optional Mounting Adaptable to 20 mm shaft Standard Wading Rod Stainless steel, 9 mm diameter, 1.5 m, three parts Rod Graduation Centimetre scaling with numbering every 5 cm Connection Cable 2 metre contact cable with stainless-chrome plugs Velocity Readout Direct Velocity Logger / Indicator DVI-V1 Calibration Relation V = k x n + Delta Primary Applications Shallow channels, small canals, streams, laboratories and model studies -
Shallow stream velocity measurementSmall canal discharge measurementIrrigation-channel flow monitoringOpen-channel velocity measurementClosed-channel water-flow studiesStream gaugingRiver-edge velocity surveysDrainage-channel monitoringHydraulic laboratory experimentsPhysical model studiesEnvironmental flow monitoringWater-resource engineering surveysResearch and educational applications
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