Utility Metering Flow Computer KEPmeter ES-749

Description

Utility Metering Flow KEPmeter ES-749 Computer for a variety of flowmeter types in liquid, gas, steam, and heat applications. Multiple flow equations are available in a single instrument with many advanced features. The alphanumeric display offers measured parameters in easy to understand format. Manual access to measurements and display scrolling is supported versatility of the Flow Computer permits a wide measure of versatility within the instrument package.

The various hardware inputs and outputs can be “soft” assigned to meet a variety of common application needs. The user “soft selects” the usage of each input/output while configuring the instrument. Applications Include: Steam Mass, Steam Heat, Natural Gas, Fuel 0il, Compressed Air, Chilled Water Only, and Heated Water Only including Low DeltaT Cutout.

The isolated analog output can be chosen to follow the volume flow, corrected volume flow, mass flow, heat flow, temperature, pressure, or density by means of a menu selection. Most hardware features are assignable by this method.

The user can assign the standard RS-232 Serial Port for external data logging, transaction printing, or for connection to a modem for a remote meter reading. A Service or Test mode is provided to assist the user during start-up system check out by monitoring inputs and exercising outputs. The system setup can also be printed.

Utility Metering Flow KEPmeter ES-749 Feature

  • “EZ Setup”- Guided Setup for First-Time Users
  • Liquid, Gas, Steam and Heat Flow Equations
  • Utility Metering – Steam, Heating/Cooling, Chilled Water, Natural Gas, Compressed Air
  • Menu Selectable Hardware & Software Features
  • Internal Data Logger
  • Isolated Pulse and Analog Outputs Standard
  • RS-232 Port Standard, Provides Power for Modem
  • RS-485 with Modbus RTU Optional
  • Internal Communication Card OptionSupports: BACnet IP, BACnet MS/TP, Metasys N2, Modbus TCP, AB Ethernet IP, AB DF1, LonWorks*
  • Windows™ Setup Software
  • NX19 Gas Equations, Stacked DP Transmitters
  • DDE Server & HMI Software Available
  • Remote Metering by External Wireless or Modem
  • Attractive Wall Mount Enclosure Available

Utility Metering Flow KEPmeter ES-749 Specifications:

Environmental

  • Operating Temperature: 0 to +50 C
  • Storage Temperature: -40 to +85 C
  • Humidity : 0-95% Non-condensing
  • Materials: UL, CSA, VDE approved

Display

  • Type: 2 lines of 20 characters
  • Types: Backlit LCD, OLED, and VFD ordering options
  • Character Size: 0.2” nominal
  • User-selectable label descriptors and units of measure

Keypad

  • Keypad Type: Membrane Keypad with 16 keys
  • Keypad Rating: Sealed to NEMA 4X / IP65

Enclosure

  • Enclosure Options: Panel, Wall, Explosion Proof
  • Size: See Dimensions
  • Depth behind panel: 6.5” including mating connector
  • Type: DIN
  • Materials: Plastic, UL94V-0, Flame retardant
  • Bezel: Textured per matt finish

Power Input

  • The factory-equipped power option is internally fused.
  • An internal line-to-line filter capacitor is provided for added transient suppression. MOV protection for surge transient is also supported
  • Universal AC Power: 85 to 276 Vrms, 50/60 Hz
  • DC Power Option: 24 VDC (16 to 48 VDC)
  • Power Consumption
  • AC Power: 6.5 V/A
  • DC Power: 300 mA max.

Flow Meter Types:

  • Linear: Vortex, Turbine, Positive Displacement, Magnetic, GilFlo, ILVA, Mass Flow and others
  • Square Law: Orifice, Venturi, Nozzle, V-Cone, Wedge,
  • Averaging Pitot, Target, Verabar, Accelabar, and others
  • Multi-Point Linearization: May be used with all flowmeter types. Including 16 point, UVC, and dynamic
    compensation.

Flow Inputs:

Analog Input:

  • Accuracy: 0.02% FS at 20° C
  • Ranges Voltage: 0-10 VDC, 0-5 VDC, 1-5 VDC
  • Current: 4-20 mA, 0-20 mA,4-20 mA stacked, 0-20 mA stacked
  • Basic Measurement Resolution: 16 bit
  • Update Rate: 4 updates/sec
  • Automatic Fault detection: Signal over/under range,
  • Current Loop Broken
  • Calibration: Operator assisted learning mode
  • Extended calibration: Learns Zero and Full Scale of each range
  • Fault Protection:
    • Fast Transient: 500 V Protection (capacitive clamp)
    • Reverse Polarity: No ill effects
    • Over-Voltage Limit: 50 VDC Over voltage protection
    • Over-Current Protection: Internally current limited protected to 24VDC

Pulse Inputs:

  • Number of Flow Inputs: one Input
  • Impedance: 10 k ? nominal
  • Trigger Level: (menu selectable)
    • High Level Input
      • Logic On: 2.5 to 30 VDC
      • Logic Off: 0 to 2 VDC
    • Low Level Input (mag pickup) Selectable sensitivity:
      • 10 mV and 100 mV
      • Minimum Count Speed: 0.25 Hz (to maintain rate display)
      • Maximum Count Speed: Selectable: 0 to 50 kHz
      • Overvoltage Protection: 50 VDC

User Entered Stored Information (EEPROM / Nonvolatile RAM)

  • Transmitter Ranges, Signal Types
  • Fluid Properties (specific gravity, expansion factor, specific heat, viscosity, isentropic exponent, combustion heating value, Z factor)
  • Units Selections (English/Metric)
  • Language Translations (optional)

Data Sheet: ES749-utility-metering-flow-computer

Reference: https://kepmeters.com

Another Article:

author

Rudy Wiratama

rudywinoto.com/wmablog.com/flowmasonic.com

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