TSI FlowMaster 250DL Flow Meter

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The Flowmaster 250DL measures the flow rate and the pressure at every water drawing off point and produces verifiable reports. Applications include; Testing hydrants, Testing pumps, Testing dry risers, Testing branches and hoses, Flushing water mains, Evaluating fire fighting techniques, Training.


  • Easy to use
  • Automatically stores your test results
  • Creates verifiable test reports
  • Accurate and reliable electromagnetic sensor
  • Robust – no moving parts
  • Portable, rechargeable and connectable anywhere
  • Large digital electronic flow rate display
  • 4-digit backlit LCD display
  • Volume readings to 1,000,000 litres
  • Flow readings in LPM or in US GPM


Type: Electromagnetic
Operating Range: 30 to 3,000 lpm, can be extended to 5,000 lpm
Accuracy: 30 to 750 lpm: ±15 lpm > 750 lpm: ± 2%
Power Supply: Internal battery 12V DC, 2.4Ah Up to 10 hours continuous operation
Operating temperature: -10 to +50ºC
Weight: 12.5kg Dimensions: 210 (H) x 240 (W) x 390 (L) mm
Housing: Solid and corrosion resistant LM25 aluminium
Sensor: Piezoresistive pressure transducer
Range: 0-25bar in 0.1bar increments
Accuracy: ± 1%
Readout: High brightness LED. Readings in BAR or PSI

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