Ultrasonic Flow and Level Sensors

Ultrasonic Flow and Level Sensors

  • High Accuracy
  • Intelligence Built In
  • IP68 Rating/NEMA 6P
  • 3m-20m Range
  • Temperature Compensation
  • Narrow Beam Angle
  • Encapsulated Sensor
  • Unique Radial Ultrasonic Crystal
  • Excellent Chemical Resistance
  • Description
  • Application Areas
  • Specifications
  • Brochure

Product Description

  • High Accuracy
  • Intelligence Built In
  • IP68 Rating/NEMA 6P
  • 3m-20m Range
  • Temperature Compensation
  • Narrow Beam Angle
  • Encapsulated Sensor
  • Unique Radial Ultrasonic Crystal
  • Excellent Chemical Resistance

The Digison range of intelligent ultrasonic sensors range from high accuracy, high resolution devices for precision flow measurement, to robust high power devices for liquid and solid level measurement. Manufactured in HDPE or PTFE, the sensors are resistant to most chemicals and hostile environments.

Intelligence: All Digison sensors contain powerful Field Programmable Gate Array (FPGA) processors which are renowned for robust performance and excellent durability. Unique to the Digison range of sensors is the ability to return a real time ultrasonic echo direct to the USI controller for viewing and setup. The user has direct control over the sensor via the USI screen rather than through a laptop or oscilloscope. Programmable options allow:

• Tank mapping
• Echo tracking
• Echo cancellation and discrimination from false echoes
• Noise suppression
• Digital filtering
• Variable echo transmit and return power

High Resolution and data speed: The Digison 3 & 6 offer resolution of less than a millimetre and data capture of less than 1 second which means for flow applications both instantaneous flow rate and daily totalised flow are truly representative and highly accurate.

Narrow Beam Angle: All Digison sensors generate a beam angle of only 6 degrees meaning narrow vessels and apertures can be used meaning the risk of false echoes from tank walls, seams and welds and other interfering objects such as internal ladders are reduced.

Integral Temperature compensation: All Digison 3 have integral temperature compensation to allow for ultrasonic time of flight variations due to temperature (~0.7% per degree centigrade). Changes in time of flight are automatically compensated for in the sensor electronics so the distance measured is always the true distance. The Digison 3 is available with a reflective plate which enables even higher accuracy for flow measurement.

Fittings: The transducers are available in 1” NPT thread or blind flanged in ANSI or DIN patterns. Submersion hood, angled brackets and aiming kits are also available.

  • Liquid and Solid Level
  • Pump Control
  • Penstock Control
  • Tank mapping
  •  Echo tracking
  • Echo cancellation and discrimination from false echoes
  • Noise suppression
  • Digital filtering
  • Variable echo transmit and return power

Type          Range    Freq(KHz)    Cable Length

Digison 3      3m          150KHz            5m

Digison 6      6m          80KHz             10m

Digison 10    10m        60KHz             12m

Digison 20   20m        40KHz             20m

  • Maximum Cable length: Cable length can be up to a maximum of 500m from the instrument.
  • IP Rating: Digison 6,10 &20 - IP68: Digison 3 – IP65 (IP68 on request)
  • Operating Temperature: -30 degrees Centigrade to + 60 degrees Centigrade
  • Standard Thread: 1” BSP (other threads available on request).
  • Range: The above ranges relate to liquids at ambient temperatures only. High temperatures, dust, solids, steam will all reduce the operational range.

Ultrasonic Flow and Level Sensors Brochure