Last Updated: 05/04/2020
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Dwyer Series 645 Wet/Wet Differential Pressure Transmitter

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Part Number: Series 645 Categories: ,
  • Free Shipping
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    Questions? Call +604-502 1894 Mon-Fri 8:30am to 5:30pm or Email [email protected]

    FREE Domestic AND SEA Shipping!

    Most orders RM500/USD120 or more ship SEA for FREE!

    • Delivery within the Southeast Asia only.
    • Hazardous items excluded.
    • Extremely heavy or bulky items excluded.
    • Distributors, Resellers and OEMs excluded.
    • Contact us for shipping charge for orders < RM500/USD120
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    Questions? Call +604-502 1894 Mon-Fri 8:30am to 5:30pm

    Setup, Configuration and Technical Support of our Products are FREE.

    We help to check your faulty Instruments too, fill in the form here

    Free phone and email tech support continues as long as you own the product. Click here for contact information.

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  • SERIES 645 Wet/Wet Differential Pressure Transmitters are designed for use with compatible gases and liquids which can be applied to both the pressure and reference ports. Quick response capacitance sensor delivers a 4 to 20 mA output signal proportional to differential pressure with ±.25% accuracy. The Series 645 transmitters are ideal for process control, filter condition monitoring, refrigeration equipment, pump speed control, HVAC equipment, and liquid level measurement. For ease of installation and maintenance, order optional 3-valve manifold assembly. Bleed ports allow for total elimination of air in the line and pressure cavities.

    California Residents:  Click Here for Proposition 65 WARNING.

    Product Applications

    • Process control
    • Filter monitoring
    • Refrigeration equipment
    • Pump speed control
    • HVAC equipment
    • Liquid level measurement

    Service : Compatible gases or liquids on both pressure and reference sides.

    Wetted Materials : 17-4 PH stainless steel, 300 Series stainless steel, fluoroelastomer and silicone O-rings and bleed screw seals.

    Accuracy : ±0.25% FS (RSS).

    Temperature Limits : Operating: 0 to 175°F (-22 to 80°C); Storage: -65 to 260°F (-54 to 126°C).

    Pressure Limits : (High side) 1 to 5 psi: 20 x FS, 10 to 25 psi: 10 x FS, 50 psi: 5 x FS, 100 psi: 2.5 x FS; (low side) 2.5 x FS.

    Thermal Effects : (includes zero and span) ±0.02% FS/°F, 30 to 150°F (-1 to 65°C).

    Power Requirements : 11 to 30 VDC.

    Output Signal : 4 to 20 mA, 2-wire.

    Zero and Span Adjustments : Adjustable, ±1 mA, non-interactive.

    Response Time : 30 to 50 ms.

    Loop Resistance : 0 to 1000Ω.

    Electrical Connection : Barrier strip terminal block with conduit enclosure and .875″ (22 mm) diameter conduit opening.

    Process Connection : 1/4″-18 female NPT.

    Housing : Stainless steel/aluminum, NEMA 4X (IP56).

    Weight : 14.4 oz (0.4 kg).

    Agency Approvals : CE.3-Valve Manifold Assembly

    Manifold : Brass.

    Valve Type : 90° on/off.

    Process Connection : 1/4″-18 female NPT.

    • Versatile, high-accuracy device for liquid or gas supports designs requiring more precise measurements in support of application
    • Optional 3-way valve manifold supports simplifying installation or removal of transmitter without interrupting process

    Product Literature

    Manual

    Catalog Pages

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    Questions? Call +604-502 1894 Mon-Fri 8:30am to 5:30pm

    Setup, Configuration and Technical Support of our Products are FREE.

    We help to check your faulty Instruments too, fill in the form here

    Free phone and email tech support continues as long as you own the product. Click here for contact information.

    close-link
    celectric logo

    Questions? Call +604-502 1894 Mon-Fri 8:30am to 5:30pm or Email [email protected]

    FREE Domestic AND SEA Shipping!

    Most orders RM500/USD120 or more ship SEA for FREE!

    • Delivery within the Southeast Asia only.
    • Hazardous items excluded.
    • Extremely heavy or bulky items excluded.
    • Distributors, Resellers and OEMs excluded.
    • Contact us for shipping charge for orders < RM500/USD120
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