- Model MF pro - Water Flow Meter

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The OTT MF Pro is a user-friendly, low maintenance electromagnetic current meter for cost-efficient in-stream discharge measurement. The OTT MF Pro is a user-friendly, low maintenance electromagnetic current meter for cost-efficient in-stream discharge measurement. The OTT MF pro saves time in the field by automatically calculating discharge and its electromagnetic sensor head is maintenance-free, ideal for use in low-flow environments, and unaffected by large amounts of organic matter.

  • Usage Type: Spot
  • Measurement technology: Electro-magnetic
  • Parameters measured: Flow velocity and water depth
  • Product Highlights: Low maintenance magnetic - inductive probe with level measurement for reliable flow measurements. Works well in low flow and turbulent conditions, cross - sections with weed growth and pollution. Applicable in streams and conduits. Provides colored graphi
  • Measurement range: 0 … 6 m/s
  • Accuracy: ± 2% of measured value ± 0.015 m/s ( 0 … 3 m/s ) and ± 4% of measured value ± 0.015 m/s ( 3 … 5 m/s )

  • Discharge automatically calculated: the OTT MF pro computes discharge automatically based on USGS and ISO methods, saving time and eliminating potential for error caused by written transcription 
  • Real-time velocity: velocity is graphed in real-time on the meter's color display, allowing trends to be visualized quickly
  • Maintenance-free: the electromagnetic sensor head has no moving parts and is virtually maintenance-free
  • Versatile applications: the sensor's magnetic inductive measurement principle makes the OTT MF pro ideal for use in low-flow conditions and environments heavy in organic matter, unlike mechanical or acoustic meters
  • User-friendly handheld: a lightweight, water-resistant handheld features a full color display that is easily readable even in bright sunlight. Depth sensor: optionally included in the unit

  • Velocity measurement:
  • Measurement method: Magnetic-inductive
  • Measuring range: 0 ... 6 m/s
  • Accuracy:
    • Accuracy at 0 3 m/s: ±2 % of meas. value ±0.015 m/s
    • Accuracy at 0 5 m/s: ±4 % of meas. value ±0.015 m/s
    • Zero stability: ±0.015 m/s
  • Resolution:
    • 0.001 at measured value: <10
    • 0.01 at measured value: <100
    • 0.1 at measured value: >100
  • Depth measurement (option):
    • Absolute pressure sensor: with single point calibration
    • Measuring range: 0 ... 3.05 m
    • Accuracy: The larger of ±2% of measured value or ±0.015 m
  • Methods for velocity measurement:
    • Streams: 1, 2, 3, 5, and 6 point measurement (ISO / USGS standards)
    • Conduits (canalization): 0.9 x Vmax; 0.2/0.4/0.8; 2D
    • velocity integrating method
    • Conduit profiles: Circular, rectangular, trapezoidal, 2/3 egg, inverted 2/3 egg
  • Methods for discharge calculation:
    • EN ISO 748: Mid and Mean section method
  • Power supply: Lithium-ion battery
    • Lifetime: 18 hours typ. (20°C)
  • Data memory capacity: Up to 10 measuring locations (of 32 vertical profiles each)
  • Temperature: -20 ... +60°C (operation/storage)
  • Handheld unit display:
    • Graphic colour display, transflective: LCD 3.5', QVGA
    • Handheld unit interface: USB Mini B type, 5-pin
    • Export format: TSV (Tab Separated Value) file format
  • Operating modes: Real-time velocity measurement, Discharge profile (stream/conduit)
  • Noise suppression: 50 Hz, 60 Hz (adjustable)
  • Cable lengths: 2 m, 6 m,12 m, and 30 m
  • Material:
    • Sensor housing: ABS, glass-fiber reinforced
    • Handheld unit: Polycarbonate, moulded,by shock-absorbing elastomer (TPE)
  • Dimensions and weight:
  • Sensor body:
    • L x W x H: 11.9 cm x 4.3 cm x 6.3 cm
    • Weight: 0.5 kg ( with 6 m cable)
  • Handheld unit:
    • L x W x H: 21.8 cm x 9.3 cm x 5.3 cm
    • Weight: 0.68 kg
  • IP class of protection:
    • Sensor: IP68
    • Handheld unit: IP67 (USB cap attached)

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