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Metallic Tee Type Flow Sensors - Series 250

The Series 250 flow sensor features a six-bladed impeller design with a proprietary non-magnetic sensing mechanism, mounted in a cast bronze housing, with female NPT threads.The unique impeller design is less prone to be fouled by waterborne debris. The forward curved shape coupled with the absence of magnetic drag provides improved operation and repeatability even at lower flow rates. This is especially true where the impeller is exposed to metallic or rust particles found in steel or iron pipes.

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  • Size
    12.7...63.5 mm
    1/2...2-1/2 in.
  • Temperature Range
    Up to 105 °C
    Up to 221 °F
  • Flow Range
    0.09…9.144 m/sec
    0.03...30 ft/sec
  • Pressure Range
    Up to 27 bar
    Up to 400 PSI
  • Accuracy
    ±1.0%
    ±1.0%
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Provides higher, more consistent torque than four-bladed impeller designs.

Used in conjunction with any Badger Meter impeller flow monitor or transmitter, Badger Meter non-magnetic flow sensors provide an accurate reading of the rate of liquid flow as well as total accumulated flow.

  • Impeller, bearing and shaft are easily replaced in field
    without changing calibration
  • Sensor electronics easily removed from tee
  • Two-wire sensor—power and signal transmit on single pair of wires up to the distance of 2000 feet (610 meters)
  • Digital signal easily interfaced with transmitters, monitors, or PLC’s


Product Specifications

View & configure CAD/BIM drawings Download CSI specifications
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  • Temperature Ratings
    Standard Version 105 °C continuous service
    Irrigation Version 66 °C continuous service
    Standard Version 221 °F continuous service
    Irrigation Version 150 °F continuous service
  • Maximum Pressure at 100 °F
    400 psi
    400 psi
  • Recommended Design Flow Range
    0.15…9 m/sec
    0.3…15 ft/sec
  • Accuracy
    ±1.0% of full scale over recommended design flow range
    ±1.0% of full scale over recommended design flow range
  • Repeatability
    ± 0.7% over recommended design flow range
    ± 0.7% over recommended design flow range
  • Linearity
    ± 0.7% over recommended design flow range
    ± 0.7% over recommended design flow range
  • Rangeability
    60:1
    60:1
  • Transducer Excitation
        • Supply voltage = 8V DC min. 35V DC max.
          Quiescent current = 600 uA (typical)
          OFF State (VHigh) = Supply voltage – (600 uA * Supply
          impedance)
          ON State (VLow) = 1.2V DC @ 40 mA (15 Ω + 0.7V DC)
        • Supply voltage = 8V DC min. 35V DC max.
          Quiescent current = 600 uA (typical)
          OFF State (VHigh) = Supply voltage – (600 uA * Supply
          impedance)
          ON State (VLow) = 1.2V DC @ 40 mA (15 Ω + 0.7V DC)
  • Electrical Cable for IR Sensor Electronics
    48 in (122 cm) of UL style 116666 copper solid AWG 18 wire with direct burial insulation. Rated to 221° F (105° C).
    48 in (122 cm) of UL style 116666 copper solid AWG 18 wire with direct burial insulation. Rated to 221° F (105° C).
  • Electrical Cable for Standard Sensor Electronics
    20 ft (610 cm) of 2-conductor AWG 20 with AWG 22 drain wire shielded UL type PTLC wire provided for connection to display or transmitter unit. Rated to 221°
    F (105° C). May be extended to a maximum of 2000 ft (610 m) with similar cable and insulation appropriate for application.
    20 ft (610 cm) of 2-conductor AWG 20 with AWG 22 drain wire shielded UL type PTLC wire provided for connection to display or transmitter unit. Rated to 221°
    F (105° C). May be extended to a maximum of 2000 ft (610 m) with similar cable and insulation appropriate for application.
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Market Applications

  • Building Design, HVAC & Plumbing

    Flow instrumentation solutions are a crucial aspect of building design, construction and operation for apartments, hospitals, schools, factories and other facilities. From HVAC and grounds management to plumbing and water services, our meters are specifically designed to provide solutions that are accurate and reliable, even under the most challenging conditions.

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  • Municipal Water Treatment & Distribution

    Water and wastewater treatment facilities have the critical job of producing a safe supply of high-quality drinking water. Their operational processes are complex and involve a wide range of flow measurement tasks. These applications demand the highest flow meter accuracy and reliability, as well as long-term stability and a low cost-of-ownership. Badger Meter water treatment solutions meet the challenge and are part of our end-to-end portfolio of products for the water utility industry.

    View Solutions
  • Process & General Industry

    To succeed in a competitive marketplace, manufacturers must deliver the right product on time, every time, as well as capitalize on opportunities for new products, while maximizing uptime and reducing production costs. These manufacturing and processing industries worldwide depend on precise measurement and control technology flow meters. Badger Meter flow meters produce consistently reliable performance to ensure proper blending, custody transfer and signal transmission as well as compliance with international industry standard requirements. Exceptionally durable flow meters and control products help keep production up and running.

    View Solutions

Product Documentation

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