Impeller Flowmeter Tool
Precision Fluid Velocity Measurement
The Impeller Flowmeter Tool is a reliable instrument designed to measure vertical fluid velocity within a borehole, enabling the identification of inflow and outflow zones. Typically operated at a constant logging speed both up and down the borehole, this tool provides accurate data for hydrogeological and environmental assessments.
After data collection, measurements are corrected for logging speed to produce a Fluid Velocity (FV) log. By combining FV data with caliper measurements (borehole diameter), the tool can calculate flow rates (Q) in litres per second, providing valuable insights into subsurface water movement.
Key Features
Specifications
- Dimensions: 700mm (length) x 38mm (diameter)
- Weight: 5kg
- Velocity Range: 10mm/s and above
- Maximum Temperature: 80°C
- Maximum Pressure: 20MPa
Logging Conditions
- Logging Speed: 4–15 m/min
Borehole Compatibility
- Minimum Diameter: 60mm
- Environment: Water-filled boreholes
- Lining: Suitable for unlined, steel, or plastic-screened boreholes
The Impeller Flowmeter Tool is an essential solution for assessing fluid velocity and flow dynamics within boreholes. Its precise measurements and ability to identify water movement make it indispensable for groundwater studies, aquifer evaluations, and environmental monitoring.



