DRG Series Paddle Wheel Flow Sensor

Brand: KOBOLD Instruments, Inc

The KOBOLD DRG paddle-wheel flow sensor offers the winning combination of compact size, low cost and versatility, which makes it the perfect OEM flow sensor.

The DRG uses a Hall effect sensor to detect the passing of permanent magnets embedded within the rotating paddle wheel.

The sensor can be supplied with either a frequency output, 4-20 mA output or a versatile compact electronics package providing an LED flow rate display with a 4-20 mA analog output or two programmable setpoint switches.

The DRG is offered in five material combinations. An all-plastic version is available, making it suitable for use with high purity water and many types of aggressive, water-based chemicals.
  • Economically Priced
  • Perfect OEM Flow Sensor
  • All Plastic Version Available
  • Five Material Combinations
  • Frequency, 4-20 mA Analog, or Optional Digital Flowrate Indicators
  • Water Flow Ranges of 0.15...3 GPM to 3...37 GPM
  • Operating Pressures to 580 PSIG
  • Made in the USA
  • Quick Delivery


Measuring Range

  • 0.15-3 GPM to 3-37 GPM


  • 1/8” NPT to 1” NPT Threads

Body Materials

  • Brass
  • 316 Stainless Steel
  • Polypropylene

Maximum Pressure

  • 580 psig

Maximum Temperature

  • 176° F


  • ± 3 % Full Scale

Outputs Available

  • Pulse Frequency
  • 4-20 mA Analog
  • Transistor Switches

Media Category

  • Liquid


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