C581 Single stream Flow & Energy Computer

Flow and energy computer measures the actual flow, temperature and pressure.
Uses the IAPWS determinations to calculate the energy, mass and volumetric flow.
Linearization enhances accuracy in any flow range.
Hydrogen dispenser in conjunction with Coriolis mass flow meters.
Large logging register contains all measured and calculated values.
Robust IP66/67, Type4X aluminum field enclosure, withstands extreme weather and industrial conditions.

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Specification

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.

  • Displays calculated mass flow, volumetric flow and power at actual conditions.
  • Calculates totalized values for volume, mass and energy.
  • Determines density and enthalpy according to IAPWS.
  • Main screen with custom selectable order of measured and calculated variables.
  • Data logging of process parameters and calculated values.
  • 11 linearization points per input, for all inputs.
  • Ability to process various flow inputs: pulse (pending), (stacked) differential pressure or other 4 – 20mA signals.
  • 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.
  • Large graphical user interface with large digits.
  • Hydrogen For industrial environments, measuring water, superheated and saturated steam at heat exchangers, boilers, condensers and coolers.
  • For single or stacked differential pressure based flowmeters or averaging systems.
  • 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).

Signal Inputs

Flow meter input :

One HF pulse input (pending): 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 input :

One Pt100, Pt500 (2- or 3-wire) or 4-20 mA (active/passive) input

Pressure input :

One analog input: 4 – 20mA active or passive input.

Status input:

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: 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.

Datasheet

Manual