This product is no longer available. Some accessories, replacement parts, or services may still be available.
VMT2 Geotivity Velocity Sensor


On November 14, 2008, Campbell Scientific removed the VMT2 from our pricing system because Geotivity, the manufacturer, is no longer producing it. This ultrasonic doppler velocity sensor determined the average velocity in open channels or round pipes. The VMT2 could be combined with a level sensor in a culvert or a fixed channel to calculate flow rate (flow Q= area x velocity). Flow was measured in one direction only.

Read More


Detailed Description

  • Measures flow in one direction only.
  • No restocks or returns
  • Manufactured by Geotivity, Kelowna, British Columbia


Range 0 to 4.5 m/s (0 to 15 ft/s)
Accuracy +2% readings
Temperature Range -20° to +80°C (-4° to +176°F)
Dimensions 5.08 x 5.08 x 1.9 cm (2 x 2 x 0.75 in.)
Weight 2.3 kg (5 lb)


Datalogger Considerations

The CR200(X)-series, CR510, and CR10X can measure velocities up to 2.5 mps directly. The CR800-series, CR1000 and CR3000 can directly measure velocities up to 5.0 mps. If higher velocities are expected, a Voltage Divider (VDIV2:1 or VDIV10:1) is required.

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X
* *

*The CR500 and CR510 require the SW12V Power Switch Assembly to control power to the sensor.

Privacy Policy Update

We've updated our privacy policy.  Learn More