Analysers Online
Analysers Online Header Image
Analysers Online

Monitek Ultrasonic™ Oil in Water & Total Suspended Solids


When it comes to monitoring samples that have high suspended solids, are opaque in colour etc, traditional optical-based technologies are just not able to offer reliable results.  This is where our Galvanic, acoustic based products come in.   These sensors deliver rugged, reliable, real-time results to optimise your processes, and assure consistent quality and regulatory compliance. The Monitek family of turbidity and total suspended solid (TSS) monitors are ideal for applications that require detecting suspended solids in samples that typically coat sensors, particles in opaque liquids, and oil in water.

Monitek Introduction

  • Measures Oil in Water or Suspended Solids
  • User Defined Units (ie. ppm, mg/L, g/L)
  • Backed by 40 years of experience with tough applications

Rapid Return on Investment

  • Never miss unexpected breakthroughs
  • Meet environmental regulations
  • Optimise process control

Key Applications

  • Oil and Water Separators
  • Filter Break-Through



Measurement Certainty

  • CRN Sensor Rated to 150 °C & 260 psi
  • Accurate in Dirty, Dark Samples.  This is not an optical sensor so does not get influenced by the colour of the sample. Measures in opaque liquids and in photo-sensitive fluids
  • Explosion proof options are available (ATEX Zone Classification Available)
  • Zero Downtime for Sensor Removal
  • Up to 100 meter cable lengths available
  • Insensitive to coatings and not affected by colour
  • Easy insertion / removal without process interruption
  • Virtually maintenance free as there are no moving parts

The Monitek UltraSonic multi-sensor controller delivers unparalleled flexibility and economical operation:

  • Analog Output: 0/4-20mA
  • Calibration: Process calibration curve can be created between two and 16 standards
  • Measurement frequencies: 5 MHz and 15 MHz
  • High sensitivity with programmable measurement range
  • Ranges: 0 - 10 ppm or 0 - 10,000 ppm
  • Precision: +/- 1% of range
  • Four programmable relays
  • Backlit graphical display


Monitek’s two-component systems include modular, fit-for-purpose probes to pair with a controller. The monitors employ the principle of ultrasonic reflection for measurement, where an emitted ultrasonic pulse is reflected by the particles in a return “echo,” which is back-scattered and transformed into an electronic signal. The system detects, evaluates, and then displays the signal as a precise measurement value. Various sensor configurations allow for installation into process pipes, tanks, or open channels.


To request a brochure or for further product information, please contact us