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HACH COMPANY was established in 1947, in Ames, Iowa, USA. For more than 60 years, Hach has been the world market leader for Analytical Instrumentation for Complete Water Analysis, providing solutions for lab, process and field.

In 2002, GLI, a leading US manufacturer of process electro-chemistry analytical instruments, became part of the Hach Company family.

Water analysis has to be right. Our customers deserve complete, reliable solutions that they can be fully  confident in. Hach is your answer. We make water analysis simpler

Suspended Solids / Turbidity Sensor

TSS sc

Suspended Solids / Turbidity Sensor


Applications: Industrial Water, Food & Beverage.

TSS sc probes can measure both online suspended solids and turbidity in one instrument. They cover the total measurement range from the finest turbidity to solids over a wide range. TSS sc probes have been specially developed for industrial applications in production processes in the chemical and pharmaceutical sector and for the requirements of industrial wastewater plants. For high solids environments TSS W sc is equipped with a wiper to maintain accuracy. Probes are available as tank probes and for inline installation.

  • Unique Multi-Beam Pulsed Infrared Light System
  • Automatic Compensation for Air Bubbles and Temperature Swings for Accuracy
  • Standard Compliant and Precise - Ease of Calibration
  • Withstands Difficult Conditions and Harsh Environments


Accuracy:Turbidity up to 1000 NTU: 
< 5% of the measured value ±0.01 NTU
Cable Length:10 m (optional extension cables available)
Cable Length 2:10 m (optional extension cables available)
Calibration Method:Turbidity (TRB): Factory calibrated
Solids (TS): To be calibrated by customer on site
Zero point: Permanently calibrated in the factory
Dimensions (D x L):1.57 in x 12.99 in (40 mm x 330 mm)
Flow:Max. 3 m/s (the presence of air bubbles affects the measurement)
Maintenance Interval:1 h/month
Material:Gasket: FKM; Wiper: PA (GF), TPV
Max Temperature:50
Measuring Principle:Combined multiple beam alternating light method with infrared diode system and beam focusing
Turbidity: 2-channel 90° scattered light measurement in accordance with DIN/EN 27027/ISO 7027, wavelength = 860 nm
Solids: Modified absorption measurement; eight-channel multiple-angle measurement, wavelength = 860 nm
Measuring Range TSS-Content:0.001 to 500 g/L
Measuring Range Turbidity:0.001 to 9999 FNU
Mounting Configurations:Immersion
Operating Temperature Range:0 to 50 °C
Pressure Range:≤ 6 bar
Repeatability:< 4 %
Repeatability Turbidity:< 3 %
Response Time T90:1 to 300 s adjustable
Weight 2:1.6 kg


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