Total Organic Carbon



  • Drinking water
  • Industrial waste water
  • Municipal waste water
  • Surface water
Total Organic Carbon



The total organic carbon measurement is based on the UV/persulfate method. The sample is acidified and stripped with air to remove inorganic carbon. Sodium persulfate is added and the sample is processed in two UV reactors. In the reactors the organic species present in the sample are completely oxidized to CO2. The resulting carbon dioxide is then measured by a NDIR detector and the TOC concentration is measured.


Measured parameter TOC


(with dilution) 20000 mg/l


* if two values take whichever is greater.
±2 % FS
(with dilution) ±4 % FS
Demineralized water Not required
Number of reagents 2

Reagent consumption**

** per month, at the default analysis frequency.
10 L

Technical Specifications

Model 3S-TM
Sampling Mode Continuous.
Sample Pressure: Atmospheric
Temperature: 2 ‐ 70°C (36 ‐ 158°F)
Flow Rate: 80 to 500 mL/min
Connection: 6 mm (¼-in.)
Drain Pressure-free drain
Connection: 12 mm (½-in.)
Input Streams 2
Material Epoxy-coated stainless steel AISI 304
Dimensions (H x W x D) 760 x 600 x 210 mm (29.6 x 23.4 x 8.2 in)
Weight 37 kg (81 lbs)
Power Supply Input Voltage: 115 VAC,230 VAC
Power consumption: max. 80 W
Output signals 2 x 4-20 mA analog outputs
Modbus via RS485
Alarms 2 SPDT programmable voltage-free relays
Digital Input None, Online
Ambient Temperature 5 - 50 °C (41 - 122 °F)
Ambient Humidity 10 - 90 % RH (non-condensing)
Protection Grade IP54 (indoor only, outdoor use possible with external cabinet, not included)


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