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Turbidity meter series Turb PLUS 2000

Turbidity meter series Turb PLUS 2000


  • Safe measurements by integrated bubble trap and ultrasonic cleaning
  • Easy calibration with standards that are traceable to Formazine
  • Standard-compliant measurement according to US EPA 180.1 and DIN EN ISO 7027, respectively
  • High accuracy, especially below 40 NTU

The nephelometric turbidity meters of series Turb PLUS 2000 can be used for nearly all applications thanks to its large measuring range. By using white or infrared light and the respective standards, the meters meet the requirements of the US EPA 180.1 as well as those of the DIN EN ISO 7027. Instrument with white as well as infrared light are equipped by default with an integrated bubble trap and ultrasonic cleaning, which saves time and effort. If needed, a set with additional external bubble trap is available.

Calibration solutions need to be ordered separately.


Turb PLUS 2020: Online turbidity meter, with white light and integrated bubble trap; nephelometric measurement specified
according to US EPA 180.1, with ultrasonic cleaning 110–240 VAC.
Turb PLUS 2120: Online turbidity meter, with infrared light and integrated bubble trap; nephelometric measurement specified according to DIN EN ISO 7027, with ultrasonic cleaning 110–240 VAC.
Turb PLUS 2120 Set: Turb PLUS 2120 including external bubble trap

  • Specs


    Turb PLUS 2020

    Turb PLUS 2120

    Measurement principle

    Scattered light measurement
    white light, nephelometric measurement

    Scattered light measurement
    infrared light, nephelometric measurement

    Measurement Range

    Factory setting: 0 ... 100 NTU; optional measuring ranges 0 ... 10 and 0 ... 1000 NTU (loaded on USB)


    Down to 0.0001 NTU


    ±2 % of reading or ±0.02 NTU below 40 NTU whichever is greater (0–100 and 0–1000 ranges)
    ±5 % of reading above 40 NTU (0–100 and 0–1000 NTU ranges)
    ±2 % of reading or ±0.02 NTU (0–10 NTU range)

    Limit of Detection

    0.02 mg/l

    Response time

    Adjustable (1 ... 60 readings)

    Sample Temperature

    1 °C ... 50 °C (34 °F ... 122 °F)

    Sample Flow Rate

    100 ml/min. ... 1.5 liter/min. (0.026 0.40 Gal/min)

    Maximum Water Pressure

    Integral pressure regulator rated 7 bar (101.5 PSI)


    Ultrasonic cleaning


    Factory calibrated to 0 100 NTU, recalibration required every three months and after change of measuring range


    Multi-Line Liquid Crystal Backlit Display


    Wall mounting with 6 screws

    Regulatory Compliance

    Compliant to U.S. EPA 180.1 Compliant to DIN EN ISO 7027


    100–240 V AC, 47–63 Hz, 80 VA


    Two Programmable, 120–240 V AC 2A Form C Relay

    Analog Output

    One powered 4–20 mA, 1000 W drive

    Digital Output

    Bi-directional RS-485, Modbus RTU

    Environmental conditions

    Storage Temperature Range: 1 °C ... 50 °C (34 °F 122 °F)
    Operating Temperature Range: 1 °C ... 50 °C (34 °F 122 °F)
    Relative Humidity: Up to 95 % (non-condensing) Not recommended for outdoor use. Altitude up to 2000 meters.


    CE, cETLus
    CE Approved, LC listed to UL 61010-1 3rd Edition: 2012 LC: Certified to CSA 22.2 No.61010-1-12: 2012


    Wetted Materials: Nylon, Wetted Materials: Nylon, Borosilicate Glass, Silicone, Polypropylene, Stainless Steel, Viton, Acety
    Housing: ABS (Double Insulated, Pollution Degree 2, Overvoltage Category II)


    2.8 kg (6.2 lbs.)

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