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  • Volume Corrector
  • EVC Primus 400

Compact volume corrector Primus 400

The Primus 400 volume corrector is an extremely compact and robust device that has been specially developed for the natural gas market and is suitable for commercial and industrial applications. It enables gas network operators and their customers to precisely measure the gas flow, to convert the measured volume based on the state variables pressure, temperature and compressibility and to read out all data via standard protocols.
  • MID approval
  • Versions for Ex zones 0, 1 and 2
  • Characteristic curve correction of the gas meter
  • Tariff memory and event logbook
  • With GSM/GPRS/LTE modem (optional)
  • Possibility of connecting an additional modem (multi-client capability)
  • Windows operating software (supplied free of charge)
  • Easy installation and commissioning; simple and intuitive operation


Calculation of the compressibility number (K number) according to different methods:

  • MKV Parameters (L-Gas/H-Gas)
  • AGA NX-19 mod
  • AGA8-G1/G2
  • SGERG-88
  • AGA8-92DC
  • as a constant
Ultraschallgaszähler USM GT400
Max. Operating pressure pmax130 bar
Inputs8 digital inputs for
-LF/HF pulses
-NAMUR signals
-EncoderStatus messages
Up to 6 analog inputs (optional)
Pressure TransducerBuilt into the housing or external
Temperature sensorPT 1000, 4-wire connection
Output signals4 digital outputs
Up to 4 analog outputs (optional)
InterfacesOptical interface (IEC-1107) for infrared read head
2 RS 232/485 interfaces
Internal modem (LTE/GSM/GPRS)
ProtocolsModbus RTU/TCP
DisplayBacklit LCD display
HousingPlastic, WxHxD = 263x201x111 mm
Protection class IP 66
Supply voltageLithium battery or 5 VDC / 24 VDC / 230 VAC
Ambient temperature-25°C to +70°C
LoremLipsum
Technical Product Information & Software
Primus 400 EN
Data Sheet, PDF (408kb)
RMGView_Prime_1.0.5.73
Software, ZIP (76,3mb)
EU-DoC_Primus 400_2022-03-18
Declaration of conformity, PDF (159kb)
HIE04_ModA_CDM21228_Setup
Software, ZIP (2,3MB)
Manual RMGView Prime V1.1 EN
Manual EN, PDF (1,7mb)
Operating & maintenance instructions
Primus 400 EN
Manual, PDF (5,3mb)

Information videos about Primus 400

Firmware Upload + Parameter file upload
Modbuslist Update RMGView Prime
Add standard flow
Upload parameter file
Enter and reset password
Primus 400 operating point test
Primus 400 connection mit Comserver
Time synchronization
Set analog output

Do you have any questions about:

Compact Volume Corrector Primus 400

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Gas Measurement Technology
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Otto-Hahn-Straße 5 35510 Butzbach Germany
+49 6033 897 0