OBS-3-L

D&A Instrument Company Turbidity Monitor

Retired Product
(not available for purchase)

REPLACED BY THE OBS-3+

The OBS-3 Turbidity Monitor is a submersible probe manufactured by D & A Instrument Company. It uses a backscatter method to measure turbidity for the range of 0.02 to 2000 FTU.

Our dataloggers require a voltage clamp that reduces the voltage output to 5 V for the CR23X, or 2.5 V for the CR10(X) and CR510. The standard calibration is included, and a three-point calibration is available upon request. A 4-20 version is also available.


Features

  • Measures turbidity range for 0.02 to 2000 FTU
  • Non-linearity of turbidity (formazin, 0 to 2000 FTU) is 2.0%
  • Manufactured by D&A Instrument Company

Specifications

  • Non-linearity of turbidity: 2% (formazin, 0 to 2000 FTU)
  • Drift: <5% per year
  • Settling time: <1 second
  • Input voltage: 9 to 16 Vdc
  • Maximum depth: 500 m (1640.5 ft)
  • Infrared wavelength: 875 nm
  • Diameter: 1.2" (3 cm)
  • Length: 7.1" (18 cm)
  • Weight: 0.4 lbs (181.4 g)