RETIRED ›
This product is no longer available and has been replaced by: OBS501. Some accessories, replacement parts, or services may still be available.
OBS500 Smart Turbidity Meter with Antifouling Features
Services Available
Repair Yes
Calibration Yes
Free Support Yes

Overview

The OBS500 is a submersible turbidity probe with active antifouling capabilities for better measurements in biologically active water with both high and low turbidity. It outputs an SDI-12, digitally processed signal that many of our data loggers can measure. ClearSensor®  and OBS® are registered trademarks of Campbell Scientific.

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Benefits and Features

  • Dual backscatter and sidescatter sensors used to measure turbidity
  • Patented ClearSensor antifouling method for better measurements in biologically active water
  • Shutter/wiper mechanism keeps lenses clean
  • Refillable biocide chamber prevents fouling
  • Disposable plastic sleeve facilitates cleanup
  • Optional copper sleeve for additional protection (especially for sea water) or disposable plastic sleeve facilitates easy cleanup

Images

Similar Products


Specifications

Dual Probe 90° sidescatter and backscatter
Range 0 to 4000 NTU
Active and Passive Antifouling Shutter, wiper, biocide, copper, optional removable sleeve
Concentration Accuracy ±2% of reading or 0.5 NTU (whichever is greater)
Operating Temperature Range 0° to 40°C
Temperature Accuracy ±0.3°C
Emitter Wavelength 850 nm
Power Requirements 9.6 to 18 Vdc
Measurement Time < 10 s
Maximum Submersion Depth 100 m (330 ft)
Diameter 4.8 cm (1.88 in.)
Maximum Cable Length > 500 m (1640 ft)
Length 27 cm (10.63 in.)
Weight 0.59 kg (1.3 lb)

Power Consumption

Quiescent < 200 µA
Measurement < 40 mA
Communication < 40 mA
Maximum Peak Current 200 mA for 50 ms when shutter motor starts
Active Shutter Motor < 120 mA

Outputs

SDI-12 Version 1.3, 1200 bps
RS-232 9600 bps
Analog 0 to 5 Vdc

Compatibility

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Data Loggers

Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR23X (retired)
CR295X (retired)
CR3000
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X

Downloads

OBS500 Firmware v.03 (441 KB) 24-04-2017

Latest firmware for the OBS500.

View Revision History