Level- and interface metering
Typ: BA

The BA-type liquid level meter is suitable for level measurement of liquid products in open or pressurized vessels. The device is based on Archimedes’ buoyancy principle.

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  • Level measurement, monitoring, regulation and control.
  • Especially because of its design, the BA is suitable for processes under difficult and rough operating conditions.
  • For process monitoring and regulation, the units are available with additional electrical equipment.
Special features
  • Wide range of wetted materials
  • High pressure design
  • Clear 90°-scale
  • Stainless steel display
  • Can be used in the Category 2 potentially explosive area
Technical data


  • Materials: Stainless steel, Hastelloy (others on request)
  • Process connection: DN50 flange acc. EN 1092, ASME B16.5, DIN2512, (others on request)
  • Nominal pressure: PN 40, ASME Cl150 / 300
  • Process temperature: -40°C up to +250°C
  • Ambient temperature: -40°C up to +80°C
  • Ingress protection: IP 65 (EN60529)
  • Density range: 400?2.000 g/l


  • Aluminum (enamel finish)
  • Stainless steel

Output signal:

  • inductive limit switches
  • induktive limit switches (safety technology)
  • micro switch (others on request)
  • ES Transmitter
    • Power supply: 14…30 VDC
    • Outputs: passive, galvanically isolated
      • Analog: 4…20 mA
      • Binary 1 and 2: Ui=30 V, Ii=20mA, Pi=100 mW
    • Input binary: Counter reset (only for ES with counter module)
    • Ambient temperature: -40°C up to +70°C
    • Ingress protection: IP 20 (EN60529)
    • Communication
      • HART-protocol
      • HART-protocol and 2 NAMUR-switches
      • HART-protocol and 1 NAMUR-switch / pulse output
      • HART-protocol and counter module
      • Profibus-PA
      • Foundation Fieldbus
  • Ambient temperature:
    • -40°C up to +80°C (without switch)
    • -40°C up to +65°C (with switch)


  • ± 5 mm of actual value
  • ± 0,2% with transmitter (ES)