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CSERIES

C571

Flow & Energy Computer

for natural gas, hydrogen and other gases

Product description

The C571 is a Flow & Energy Computer for natural gas, hydrogen and other gas applications. It measures flow, temperature and pressure and uses AGA8 92DC, SGERG88(91) or table determinations to calculate volume, mass and energy. The linearization enhances accuracy in any flow range. The large logging register contains all measured and calculated values. The robust IP66/67 aluminum field enclosure, withstands extreme weather and industrial conditions.

Our proven experience with instrumentation, international requirements and the focus on user-friendly operation are combined in the most robust, accurate and easy-to-use field mount Flow & Energy Computer on the market. Learn more about the C571.

Advantages
  • Robust IP66/67, Type4X aluminium field enclosure, withstands extreme weather and industrial conditions.
  • Large, versatile display with bright backlight, all info at a glance.
  • Easy-to-operate with 6 rugged industrial silicone buttons.
  • User-friendly operation and configuration via the keypad and display or with the free available configuration software.
  • 2 temperature inputs for inlet and outlet measurement, e.g. at a heat exchanger.

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Features

  • Media: Air, nitrogen (N2), oxygen (O2), hydrogen (H2), carbondioxyde (CO2), methane (CH4), natural gas, ideal gas, other gases.
  • Displays calculated mass flow,(base) volumetric flow and power at actual conditions.
  • Calculates totalized values for (base) volume, mass and energy.
  • Determines density, enthalpy , specific heat & compressibility (SGERG88(91) and AGA8 92DC).
  • For single stream applications.
  • Main screen with custom selectable order of measured and calculated variables.
  • Data logging of process parameters and calculated values.
  • Measuring & calculation update frequency of 10 times per sec.
  • 11 linearization points per input, for all inputs.
  • Ability to process various flow inputs: pulse, (stacked) differential pressure or other 4 - 20mA signals.
  • Pt100, Pt500 or Pt1000 inputs with Callendar-van Dusen equation.
  • Ambient temp.: -40°C to +55/+70 °C (-40°F to +131/+158°F).
  • Bright backlight for good readability during day and night.
  • Multiple languages supported: English, German, French, Dutch, others pending.
  • Large graphical user interface with large digits.

Applications

  • For industrial environments, measuring natural gas, hydrogen, carbondioxyde and other gases.
  • For single or stacked differential pressure based flowmeters or averaging systems. Check here a Success story example
  • Extreme weather and industrial conditions like rain, snow, sandy deserts, salty atmospheres and temperatures between -40°C up to +70°C (-40°F up to 158°F).

Product specifications

  • Signal Inputs

    • Flowmeter Inputs

      • One HF pulse input: NAMUR, Coil, PNP, NPN, Reed sensor or active input.
      • One to three analog inputs: 4 - 20mA active or passive. Also suitable for 2 or 3 stacked dP sensors.

    • Temperature Inputs

      • Two Pt100, Pt500, Pt1000 (2-, 3- or 4-wire) inputs with Callendar-van Dusen equation.
      • Two 4 – 20 mA (active/passive) inputs.

    • Pressure Inputs

      • One analog input: 4 - 20mA active or passive input.

    • Status Inputs

      • Two configurable inputs for e.g. external alarms.

  • Signal Outputs

    • Pulse outputs

      • Function: Two configurable pulse outputs, selectable from a list of calculated values. Frequency max. 2kHz.
      • Type: Two passive transistor outputs.

    • Alarm outputs

      • Function: Configurable for various errors or warning, selectable from a list of events, measured and calculated values.
      • Type: Two passive transistor outputs and two relay outputs.

    • Analog outputs

      • Function: Re-transmitting analog values, selectable from a list of calculated values.
      • Type: One or two configurable active / passive isolated 4 – 20mA outputs.

  • Supply

    • Power Supply

      • 16 – 27V DC
      • 100 – 230V AC

    • Sensor Supply

      • Analog inputs: >20V DC when active.
      • Pulse inputs: 5.4 – 8.2 – 12 – 22V DC

  • Hazardous Area

    • Non-Sparking, Zone 2

      • Pending.

  • Communication

      • Function: Reading display info, read/write configuration settings, data log extraction, firmware uploads (via USB only).

      • Protocol: Modbus RTU.

      • Interface: USB, RS232 and RS485 2-wire.

Alternative products

  • C581

    C581

    Flow & Energy Computer for coolants, water and saturated / superheated steam

  • F126-EG

    F126-EG

    Safe area / Intrinsically safe - Flow Computer for gas with temperature and pressure compensation for corrected volume

  • E126-EG

    E126-EG

    Explosion proof - Flow Computer for gas with temperature and pressure compensation for corrected volume

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