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This product is not available for new orders. We recommend ordering: ClariVue 10.
OBS300 Turbidity Sensor
Services Available
Repair No
Calibration No
Free Support Yes

Visão Geral

The OBS300 is a submersible turbidity probe that has downward-facing optics. It uses OBS technology to measure suspended solids and turbidity for applications ranging from water quality in freshwater rivers and streams to sediment transport and dredge monitoring. Campbell Scientific data loggers measure the OBS300 probe's output and calculate turbidity.

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Benefícios e Características

  • Downward-facing optics avoid obstructions around the sides of the probe
  • Measures suspended solids and turbidity for up to 4000 NTUs
  • Provides a compact, low-power probe that is field proven
  • Stainless-steel body allows use down to 500 m in fresh water
  • Compatible with most Campbell Scientific data loggers
  • Titanium body allows use down to 1500 m in fresh or salt water
  • Accurate and rugged
  • Fitted with MCBH-5-FS, wet-pluggable connector—multiple mating cable length options available
  • Offers an optional five-point sedimentation calibration for better measurements (see Ordering Info on the web page)

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Descrição Técnica

The OBS300 uses its downward-facing optics to emit a near-infrared light into the water. It then measures the light that bounces back from the water’s suspended particles.

If an obstruction is in the emitted light’s range, the light will scatter back and the turbidity reading will be too high. This probe's downward-facing optics avoid obstructions around the sides of the probe. The OBS-3+ is available for locations that have obstructions above and below the probe. (OBS® is a registered trademark of Campbell Scientific.)

Compatibilidade

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

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR300 (retired)
CR3000 (retired)
CR310
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR6
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)

Especificações

Range
  • 0 to 250 NTU
  • 0 to 500 NTU
  • 0 to 1000 NTU
  • 0 to 3000 NTU
  • 0 to 4000 NTU
Maximum Submersion Depth
  • 500 m (1640.5 ft) for stainless-steel body
  • 1500 m (4921.5 ft ) for titanium body
Maximum Concentration Range
  • Maximum concentration depends on sediment size, particle shape, and reflectivity.
  • 5,000 to 10,000 mg/l (for mud)
  • 50,000 to 100,000 mg/l (for sand)
Concentration Accuracy
  • 2% of reading or 1 mg/l (whichever is larger) for mud
  • 4% of reading or 10 mg/l (whichever is larger) for sand
Operating Temperature Range 0° to 40°C
Drift over Time < 2% per year
Maximum Data Rate 10 Hz
Minimum Warm-up Time 2 s
Infrared Wavelength 850 nm ±5 nm
Daylight Rejection -28 dB (re: 48 mW/cm-2)
Optical Power 2000 µW
Turbidity Accuracy 2% of reading or 0.5 NTU (whichever is larger)
Housing Material 316 stainless steel or titanium
Connector MCBH-5-FS, wet-pluggable
Diameter 2.5 cm (0.98 in.)
Height 13.1 cm (5.15 in.)
Weight 181.4 g (0.4 lb)

-2.5 Output Option
Output Voltage 0 to 2.5 V (over selected NTU range)
Supply Voltage 5 to 15 Vdc
Current Drain 15 mA

-5 Output Option
Output Voltage 0 to 5 V (over selected NTU range)
Supply Voltage 5 to 15 Vdc
Current Drain 15 mA

-20 Output Option
Output Voltage 4 to 20 mA (over selected NTU range)
Supply Voltage 9 to 15 Vdc
Current Drain 45 mA

Perguntas Frequentes Relacionadas

Number of FAQs related to OBS300: 16

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  1. How is an OBS300 sensor secured?
  2. Can the OBS300 withstand dry weather conditions and work properly if it is not submerged in water all the time?
  3. Are data from the OBS-3A comparable with data from the OBS-3+ or OBS300?
  4. Is it possible to adjust an OBS-3+ or OBS300 for measurements up to 4,000 NTUs?
  5. What type of maintenance is needed for the OBS-3+ or OBS300?
  6. What is the accuracy and deviation from actual NTU in the low range for the OBS-3+ or OBS300?
  7. Is it possible to operate an OBS-3+ or OBS300 onboard a vessel while the vessel is in motion?
  8. What type of handheld display can be used with the OBS-3+ or OBS300?
  9. What is the difference between the OBS-3+ and the OBS300?
  10. Using an OBS-3+ or OBS300, when would it be advantageous to use a 4X curve instead of a 1X curve?
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