Optical Flow Sensors (OFS) 

OFS technology has proven successful in a variety of challenging applications that include high temperatures, high and variable opacity and dust concentrations, including Thermal Oxidizers,  wet scrubbers, flare stacks, incinerators, SRU, cat crackers, glass furnaces and similar processes with entrained / suspended liquid droplets. 

OSI’s patented Optical Scintillation measurement technique use a proprietary patented algorithm developed by OSI and certified by NIST (National Institute of Standards and Technology).  Supported with over 20 million hours of observation data,  OFS measures the movement of turbulence found in a gaseous flow streams.  OFS is utilizing light to see turbulence moving past out detectors.

The Measurement principle is Not Affected by Distance, Pressure, Temperature, Gas Density, Moisture or Opacity

OFS Measurement is also Not Dependent On Differential Pressure, Design DP, Beta ratio, Temperature, Gas composition, Humidity or the Speed of sound.

OFS is a single plane of measurement and in some applications may require additional paths to account for stratifications in the pipes or ducts 

OFS technology has proven successful in a variety of challenging applications that include high temperatures, high and variable opacity and dust concentrations, including Flare Stacks, Thermal Oxidizers, wet scrubbers, incinerators, carbon capture, primary/secondary air ducts, bag houses or similar processes with entrained / suspended liquid droplets. 

Truly a versatile technology when it comes to monitoring velocity, OFS makes drift free measurements across the entire measurement path and is also isolated from the process so it won’t create a pressure drop on critical processes.  

OFS is unique because our patented technology is looking at fluctuations in light and thermal Turbulence.  

The OFS measurement technique is unaffected by and does not have to compensate for changes in temperature, pressure, gas density or gas concentrations. 

Resources:

1. How OFS Works

2. OFS Technology Overview

3. OFS Emissions – Stake Brochure

4. OFS Series Optical Flow Sensors