Instantaneous Respose
Because the sensor optics are in the process stream, the Model 951 suspended solids sensor does not require bypass systems. Our in-stream measurement eliminates slow response times inherent with turbidimeters requiring bypass plumbing. The Model 951 is extremely effective where filter monitoring is crucial, and efficiency or breakthrough must be detected quickly.

Wide Dynamic Range
Our suspended solids sensor can be scaled from as low as 0-2000 ppm to as high as 0-20% TSS. The 0-2000 ppm range gives low level readings with high resolution for use downstream of clarifiers or on raw water supply. Ranges above 2000 ppm can be used for measuring high concentration solids or detecting sludge levels in clarifiers.

Handles Harsh Process Conditions
The optical design of the sensor minimizes the effects of fluid color, flow, chemicals, temperature & pressure. Our instrument operates under a wide range of temperature and pressure conditions. Robust wetted parts are 316 stainless steel and glass for high resistance to process chemicals.

Data Communication
Our suspended solids sensor comes standard with an isolated 4-20mA output for connection to control/monitoring systems. Other outputs are available.

Minimal Maintenance
The Model 951 uses a light source with a 13-year life expectancy which provides long-term stability and very low maintenance. Although our suspended solids sensor is easily calibrated by the end user, calibration drift is minimal. Because sensor removal is simple, the optics can readily be cleaned as necessary.

Limited one-year warranty against defects in material and workmanship.

Suspended Solids Sensor Model 951

The Confab Model 951 Suspended Solids Sensor is a rugged DC-powered insertion-type probe that measures suspended solids as a standalone unit. Since the sensor can be inserted in any size pipe, costly bypass systems are not required. The design eliminates the effects of fluid color. In-situ measurements provide instantaneous, accurate readings and the sensor has an isolated linear 4-20mA output for connection to control/monitoring systems.


All prices in US Dollars and do not include applicable taxes, shipping, duties and customs fees.  Please contact us for quantity discount and reseller information.

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Type Insertion Probe
Range Adjustable from 0-2000ppm up to 0 to 50% solids
Power 24 VDC @ 120mA standard or 12 VDC @ 240mA
Output 4-20 mA into 600 ohms max. isolated, other outputs available

Pipe Size

Pipes greater than 2 inches
Wetted Parts 316 stainless steel, borosilicate glass
Process Temperature -10C to 110C
Pressure 0 to 150 psig
Mounting 1" NPT male
Resolution 1 ppm
Repeatability 1 ppm
Accuracy 1% of Scale
Ambient Temperature 0C to 50C
Enclosure Dust Proof, Waterproof
Cable Length 25 feet standard, optional lengths available up to 1000 feet
Shipping Weight 6-10 pounds depending on cable length
Tube Diameter 7/8"
Tube Length 12"
Junction Box 2.5"x3"x6"
Overall Length 21-22" depending on light gap
Typical Sensor Mounting

Industrial Applications Include:

  • Potable water
  • Wastewater
  • Dairy
  • Mining
  • Chemical
  • Food and beverage
  • Breweries
  • Pulp and paper
  • Petrochemical
  • Forestry
  • Environmental