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Technical Description

ERZ 2000 Flow Computer Series

Micro-computer for Optional Flow Correction

ERZ 2000 Flow Computer Series

Available as

  • Flow corrector based on state variables ERZ 2004
  • Flow corrector based on density variables ERZ 2002
  • Flow corrector based on calorific value ERZ 2102, ERZ 2104
  • Differential pressure calculator ERZ 2112, ERZ 2114
  • Multistream version ERZ 2404


  • Parallel calculation of compressibility according to all established methods, (e.g., GERG 88 S, AGA 8, AGA NX 19 or Beattie-Bridgeman)
  • When carrying out corrections using density and standard density, the speed of sound effect is measured and calculated
  • PC-based computer
  • Parameters are freely programmable and remote parameterisable
  • Easy to operate using Internet browsers
  • DSfG control point function
  • Version ERZ 2404 for up to 4 gas meters
  • Optional plug-in Ex-i card for pressure, temperature and volume inputs
  • Gas rates function
  • Correction of meter’s performance curve (also using Reynold’s index)
  • Parameters, constants, limit values freely programmable
  • Freezing measuring and calculation values
  • Calibration “on the fly”
  • Plug-in modules, 19" plug-in
  • PTB-approved
Connections 2-channel volume input
Digital and analogue inputs
Impulse and analogue outputs
DSfG interface according to DVGW G 485
Modbus interface (ASCII/RTU/TCP)
Ethernet TCP/IP network interface
Display Electronic totalizers
Supply voltage 230/110 VAC, 24 VDC
Ambient temperature –20 °C to +55 °C
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