Sigma Controls Flow Meter/Controller, Model SDM 693
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Model SDM 693 Flow Meter/Controller

Brand: Sigma Controls, Inc.

The SDM 693 is a high performance, industrial-grade digital flow meter. It accepts all the standard process signals: pulse, open collector, switch, TTL or square wave displaying them in engineering units on a six digit display. The display also includes an extra zero which may be used to handle numbers up to 999,999.
Features
  • NEMA 4 Front Panel
  • Pulse, open collector, switch closure, TTL or square wave field selectable inputs
  • K-Factor, internal or external calibration
  • 11 Point calibration for non-linear inputs
  • Low flow cutoff
  • 12 Vdc at 50 mA or 24 Vdc at 20 mA field selectable power supply
  • 2 or 4 Relay output options
  • Tachometer/Rate meter
  • 4-20 mA output option - converts the pulse input into an isolated 4-20 mA output

    • Specifications

    Brand

    Accuracy

    • ± 0.1% of Full Scale

    Adjustment Type

    • Push Button

    Approvals & Certifications

    • UL

    Calibration

    • 11-Point Calibration for Non-Linear Inputs

    Deadband

    • Deadband Adjustment: 0 to 100%

    Display

    • 6-Digit, 0.56" (14.2 mm) High Efficiency Red or Green LED Display

    Electrical Connectors

    • Terminal Strip

    Electrical Rating

    • SPDT: 2 A at 250 Vac, Resistive

    Enclosure, Body Material

    • 25% Fiberglass Reinforced Grey Polyester, Corrosion Resistant

    Environmental Protection

    • IP66
    • NEMA 4 Front Panel
    • NEMA 4X Enclosure

    Hysteresis

    • 30 mV

    Input Signal

    • Open Collector 4.7 KiloOhms Pull-up to 12 V at 30 kHz
    • Pulse or Square: 0-12 V at 30 kHz
    • Pulse or Square: 0-5 V at 30 kHz
    • Switch Contact 4.7 KiloOhms Pull-up to 12 V at 40 Hz
    • TTL

    Loop Resistance

    • Maximum

    Materials of Construction

    • Instrument Mounting Panel: Hinged Aluminum

    Output Noise

    • < 10 mV peak-to-peak

    Power Supply

    • 12 Vdc at 50 mA
    • 24 Vdc at 20 mA, Regulated ± 5%

    Relay Output

    • 4-20 mA

    Sensitivity

    • 125 mV peak-to-peak

    Span - Minimum

    • Input Span - Minimum: 2 Hz between Points

    Switch Type

    • 2 or 4 SPDT

    Documentation

    Data Sheets

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