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We’ll get back to you within 24 hours or the following business day.

Prefer to call?
Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

(800) 616–3837

SDI Series Flow Sensor

The SDI Series flow sensor offers unparalleled performance for liquid flow measurement in closed pipe systems in an easy-to-install economical package. Impeller sensors offer a quick response to changes in flow rate and are well suited to flow control and batch type applications in addition to flow monitoring. The new four-bladed impeller design is rugged, non-fouling and does not require custom calibration.

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  • Size
    68...914 mm
    1-1/2...36 in.
  • Temperature Range
    –10…65° C
    14...150° F
  • Flow Range
    0.3…6.1 m/sec
    1...20 ft/sec
  • Pressure Range
    Up to 68 bar
    Up to 1000 PSI
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Rugged, non-fouling. No custom calibration required.

Intended for general clean liquid flow measurement applications.

  • Single direction powered insert with raw, scaled pulse and analog output
  • Bi-directional powered insert with analog and scaled pulse output
  • Battery powered insert with a local and remote display and scaled pulse output

Product Certifications
Prohibits the use of lead as an intentional additive in wetted materials and components of products, meeting the definition of “lead free” within the specific provision of the U.S. Safe Drinking Water Act (SDWA)
Prohibits the use of lead as an intentional additive in wetted materials and components of products, meeting the definition of “lead free” within the specific provision of the U.S. Safe Drinking Water Act (SDWA)

Product Specifications

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  • Operating Temperature
    Electronics –10…65 °C
    LCD –20…65 °C
    Electronics 14…150 °F
    LCD –4…150 °F
  • Maximum Pressure Rating Stainless Steel (Non Shock)
    1000 psi (68.9 bar) @ 70° F (21° C)
    900 psi (62 bar) @ 100° F (37.8° C)
    670 psi (46.1 bar) @ 140° F (60° C)
    225 psi (15.5 bar) @ 180° F (82° C)
    600 psi (41.3 bar) @ up to 140° F (60° C)
    225 psi (15.5 bar) @ 180° F (82° C)
    1000 psi (68.9 bar) @ 70° F (21° C)
    900 psi (62 bar) @ 100° F (37.8° C)
    670 psi (46.1 bar) @ 140° F (60° C)
    225 psi (15.5 bar) @ 180° F (82° C)
    600 psi (41.3 bar) @ up to 140° F (60° C)
    225 psi (15.5 bar) @ 180° F (82° C)
  • Optimum Design Flow Range
    1…20 ft/sec. (0.30…6 m/sec.)
    Extended flow range < 0.5…20 fps
    1…20 ft/sec. (0.30…6 m/sec.)
    Extended flow range < 0.5…20 fps
  • Pressure Drop
    0.5 psi or less at 10 ft/sec (3 m/sec.) for all pipe sizes 1.5 in. (38 mm) diameter and up
    0.5 psi or less at 10 ft/sec (3 m/sec.) for all pipe sizes 1.5 in. (38 mm) diameter and up
  • Accuracy
    Standard: to ±1% of rate over optimum flow range
    Standard: to ±1% of rate over optimum flow range
  • Straight Pipe Requirements
    Install sensor in straight pipe section with a minimum distance of 10 diameters upstream and 5 diameters downstream to any bend, transition, or obstruction.
    Install sensor in straight pipe section with a minimum distance of 10 diameters upstream and 5 diameters downstream to any bend, transition, or obstruction.
  • Repeatability
    ±0.5%
    ±0.5%
  • Enclosure
    • Sensor- battery: Polypropylene with Viton® sealed acrylic cover. Meets NEMA 6P specifications
    • Sensor: Polypropylene with Viton® sealed acrylic cover. Meets NEMA 4X specifications
    • Remote: Polycarbonate w/ Neoprene® sealed cover. Meets NEMA 4X specifications.
    • Sensor- battery: Polypropylene with Viton® sealed acrylic cover. Meets NEMA 6P specifications
    • Sensor: Polypropylene with Viton® sealed acrylic cover. Meets NEMA 4X specifications
    • Remote: Polycarbonate w/ Neoprene® sealed cover. Meets NEMA 4X specifications.
  • Programming
    • Battery powered version:  A-303 connector cable and SDI Series software
    • Bidirectional, pulse, and analog versions:  USB to DIC converter programming kit (840134-0002)
    • Battery powered version:  A-303 connector cable and SDI Series software
    • Bidirectional, pulse, and analog versions:  USB to DIC converter programming kit (840134-0002)
  • Display (Optional)
    • 8 character, 3/8 in. (10 mm) LCD
    • STN (Super Twisted Nematic) display
    • Annunciators for rate, total, totalizer multipliers, low battery, flow direction
    • 8 character, 3/8 in. (10 mm) LCD
    • STN (Super Twisted Nematic) display
    • Annunciators for rate, total, totalizer multipliers, low battery, flow direction
  • Accessories
    • USB to DIC converter programming kit (840134-0002)
    • ASDIB-20 programming kit- battery powered A-301 connector cable or USB
    • Battery powered version:
      • 07101 5 ft (1.5 m) extension cable
      • 07108 10 ft (3 m) extension cable
      • 07102 20 ft (6 m) extension cable
      • 07109 50 ft (15 m) extension cable
    • USB to DIC converter programming kit (840134-0002)
    • ASDIB-20 programming kit- battery powered A-301 connector cable or USB
    • Battery powered version:
      • 07101 5 ft (1.5 m) extension cable
      • 07108 10 ft (3 m) extension cable
      • 07102 20 ft (6 m) extension cable
      • 07109 50 ft (15 m) extension cable
View all Specifications
SDI Impeller Flow Meters: How They Work

Find Us On MasterSpec®

Did you know that we are on MasterSpec - Powered by Deltek Specpoint, the leading building and construction specification system used by architects and engineers? Members can access specification details for our full line of flow and energy measurement products to make specifying our class-leading technology even clearer and easier for your next project, for both new construction and retrofit.

Read More Division 23 Documentation Division 23 Documentation - BTU

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 flow meters are specifically designed to provide solutions that are accurate and reliable, even under the most challenging conditions.

    View Solutions
  • Wastewater Treatment

    Wastewater treatment facilities feature complex operational processes involving a wide range of flow measurement, water quality monitoring and toxic gas detection solutions, designed to conserve water, increase regulatory compliance and safeguard water quality, people and the environment. From individual monitors to multiparameter measurement, our versatile solutions deliver continuous and proactive monitoring for early event detection, odor control, pollution prevention, chemical management and toxic gas detection.

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  • Industrial Process

    The measurement and monitoring of flow, water quality and toxic and combustible gas plays a vital role in industrial processes for consistent delivery of quality control, personnel safety, environmental protection, process monitoring and optimization. Our comprehensive range of robust, real-time and reliable instrumentation provides dependable solutions that are easy to install, simple to maintain, creates safe areas of work and deliver increased regulation compliance.

    View Solutions

Product Documentation

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Software | Updated August 19, 2020 | 43.04 MB Impeller/Data Industrial Product Software Impeller See Release Notes
Software | Updated August 19, 2020 | 43.04 MB Impeller/Data Industrial Product Software Impeller See Release Notes

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Contact a Customer Care Representative

We’ll get back to you within 24 hours or the following business day.

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Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

(800) 616–3837