ultrasonic flowmeter-optisonic 6300


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 / 1⁄2…160″
  • 4…20 mA, HART®7, Modbus

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.

  • 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 / 0.3…65.6 ft/s (200:1)
  • Integrated thermal energy calculation
  • IP68 / NEMA 6P option
  • NAMUR NE 107 diagnostics
  • With wall-mounted or field-mounted converter


  • 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
ultrasonic flowmeter-optisonic 7300 biogas

OPTISONIC 7300 Biogas

Ultrasonic flowmeter for biogas, landfill and sewage gas applications

  • 1- or 2-path meter for low pressure biogas (dry or wet) with a high CO2 content
  • Integrated gas volume correction and methane content measurement
  • Lap joint flange: DN50…200 / 2…8″, max. PN10 / ASME Cl 150
  • Large turndown ratio (100:1)

The OPTISONIC 7300 Biogas is an ultrasonic flowmeter for low pressure biogas, landfill and sewage gas applications. The flowmeter is ideally suited to measure biogas with a high CO2 content as well as small amounts of other media like H2S, nitrogen, hydrocarbons or condensation water. Its corrosion resistant titanium transducers provide a strong ultrasonic signal into the gas. The signal processing of the meter allows a better detection of small, strongly dampened acoustic signals.

  • Bi-directional flow measurement over a wide dynamic range
  • Integrated temperature measurement
  • Integrated calculation of standard volume with optional integrated pressure sensor
  • Insensitive to corrosive components in the gas (e.g. H2S)
  • High accuracy: ±1% error of measured value (±2% of methane content)
  • With lap joint flanges for lower overall weight
  • Full bore design: No moving parts, no wear, no pressure loss
  • No periodical maintenance needed
  • Available as remote version with field converter
  • Also for use in hazardous areas zone 1

Renewable energy industry, wastewater industry

  • Measurement of raw and wet biogas right after production/fermentation
  • Methane measurement at the inlet of CHP (combined heat and power) systems

*More instruments are available, please liaise with us if any of your required instruments is not listed above.