KEP meter Supertrol 2 Multi-Function Flow Computer

The SUPERtrol II Flow Computer satisfies the instrument requirements 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. Includes equations for most flow meter types. The alphanumeric display offers measured parameters in easy to understand format. Manual access to measurements and display scrolling is supported.

The 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 flowmeter type and the usage of each input/output while configuring the instrument. Consider the following illustrative examples.

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 startup system check out by monitoring inputs and exercising outputs. The system setup can also be printed.


  • “EZ Setup”- Guided Setup for First Time Users
  • Liquid, Gas, Steam and Heat Flow Equations
  • Utility Metering
  • Menu Selectable Hardware & Software Features
  • Internal Data Logging Option
  • Isolated Pulse, Analog and Relay Outputs Standard
  • RS-232 Port Standard, Provides Power for Modem
  • RS-485 with Modbus RTU Optional
  • Internal Communication Card Option Supports: 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 Wireless or Modem and TROLlink Remote Metering Software Available

  Another Article:


Flow Meters and Computations

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


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


  • Listing: CE Compliant, UL/C-UL Pending


  • Type: 2 lines of 20 characters
  • Types: Backlit LCD or OLED
  • Character Size: 0.2” nominal
  • User-programmable label descriptors and units of measure


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


  • Size: See Dimensions at the datasheet
  • Seal: Sealed to NEMA 4X / IP65

Real-Time Clock

  • The Flow Computer is equipped with a battery-backed real-time clock with a display of time and date.

12 or 24 hour time display
Day, Month, Year date display

Power Input

  • The factory equipped power option is internally fused. An internal line to line filter capacitor and MOV are 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: 11.0 VA (11W)
DC: 300 mA max.

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: Software Calibration (no trimmers) and Auto-zero Continuously
    • Extended calibration: Learns Zero and Full Scale of each range using special test mode.
    • Fault Protection: Reverse Polarity: No ill effects
      Over-Voltage Limit: 50 VDC Overvoltage ;protection
      Over-Current Protection: Internally current limited protected to 24VDC

Pulse Inputs:

  • Number of Flow Inputs: one with or without quadrature Input
  • Impedance: 10 KΩ 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)

Sensitivity: 10 mV or 100 mV

  • Minimum Count Speed: 0.25 Hz (to maintain rate display)
  • Maximum Count Speed: Selectable: 0 to 50 kHz
  • Overvoltage Protection: 50 VDC

More Info Check Data Sheet: KEP meter Supertrol 2 st2