Ultrasonic clamp-on flowmeter for flow measurement of liquids

  • Stationary device, for installation at any location without process interruption or need to cut pipes
  • Up to +200°C / +392°F
  • For pipes DN15…4000 / ½…160"
  • 4…20 mA, HART®7, Modbus

OPTISONIC 6300 F – Version with field-mounted converter

Ultrasonic clamp-on flowmeter OPTISONIC 6300 F – Version with field-mounted converter

The OPTISONIC 6300 is an ultrasonic clamp-on flowmeter for permanent mount installation. It is particularly suitable for flow measurement of (non-)conductive liquids at any location where inline measurement is not possible or desirable. The flowmeter consists of a combination of one or two clamp-on sensors and one ultrasonic signal converter. Its robust clamp-on rail is highly flexible and can be very easily attached to virtually any pipe up to DN4000 / 160".

Typical applications of the clamp-on flowmeter include flow measurement of a broad range of refined hydrocarbons, demineralised water or chemicals as well as measurements in hygienic applications. A clamp-on version for extended temperature ranges up to +200°C / +392°F is also available. The OPTISONIC 6300 has approvals for use in hazardous areas and offers HART® communication capability.

Product highlights

  • Robust industrial design to provide maximum reliability
  • Easy and accurate sensor mounting using a rail system
  • Minimal maintenance using efficient re-greasing concept or solid coupling pads
  • Optimal accuracy due to factory flow calibration
  • X-mode dual path sensor for extra reliability
  • Measurement range: 0,1...20 m/s (200:1)
  • Integrated thermal energy calculation
  • IP68 / Nema 6P option
  • Namur NE107 diagnostics
  • With wall-mounted or field-mounted converter

Typical applications


  • Utilities like demineralized and deionized water in all industries
  • Sanitary flow rate measurement
  • Cooling water circuits
  • Process control

Water industry

  • Potable water

Power industry

  • Water intake
  • Heated water
  • Purified water

Oil and gas industry

  • Oil transportation
  • On-loading and off-loading
  • Tank storage applications
  • Natural gas dehydration / glycol circuit
  • Leak detection
  • Water draining from storage tanks

Chemical and petrochemical industries

  • Chemical or petrochemical feedstock
  • Refined liquid hydrocarbons
  • Retrofit or replacement of inline meters
  • Chemical addition
  • Corrosive, toxic and abrasive chemicals