Reliable, precise turbidity

Leading edge technology has allowed Lucenline to become the leader in regulatory reporting turbidimeters. Our intelligent measurement devices are characterized by outstanding precision and reliability, proven in countless installations in applications worldwide.




TU660 The Lucenline TU660 Online Turbidimeter is specially designed for industry and municipal applications. It is a leader in the industry, and has been designed to meet the regulations of EPA 180.1 and ISO 7027.


Range 0~100NTU / 0~1000NTU
Measurement principle Nephelometry (90 degrees)
Accuracy 0~40NTU: 2% of reading or ±0.02, whichever is greater
>40 NTU: 5% of reading
Resolution 0.0001 (below 10NTU)
Response time Adjustable (5 to 500 seconds) (0 - 1000 NTU)
Light source White light or infrared light (850nm LED)
Standard Output Isolated 4-20 mA or RS-485 (selectable)
RS-485 protocols Modbus
User alarms 2 user selectable high / low alarms
Input Pressure 1 - 200psi (built in regulator set at 15psi)
Enclosure NEMA 4X, IP66
Dimensions 14 " x 12" x 12" ( 35 cm x 30 cm x 30 cm )
Shipping weight 5.5 lbs. (2.5 kg)
 Ambient Conditions
Operating Temperature of CL720 0°C to 50°C (32°F to 122°F)
Storage temperature -20°C to 60°C (-4°F to 140°F)


  • Fast and Easy Calibration: Verification can be completed in seconds while a complete primary calibration can be finished in less than 5 minutes. The calibration kits can be used repeatedly. Low costs can be obtained over a long period of usage.
  • Low Volume Sample Chamber: The low volume sample chamber (30 ml) reduces calibration costs and provides quick response times. The optical devices are isolated from the sample, so there is no potential damage.
  • Easy Installation: An integrated design simplifies field installation.
  • Low Maintenance Fail Safe Design: Simple modular design is easy to use and service.
  • Bubble Rejection System: Eliminates bubbles without delaying the response time.
  • Affordable: Modular microprocessor based technology ensures high quality at a low price.
  • Auto Clean(optional): The optional Auto Clean Ultrasonic cleaning system is available.

Address: 11111 Katy Freeway, Suite 910, Houston, TX 77079 USAPhone: +1-832-380-8855Fax: +1-832-380-8866Email: