This product is not available for new orders. We recommend ordering: ClariVUE10.
| Services Available | |
|---|---|
| Repair | No |
| Free Support | Yes |
Überblick
Der OBS-3+ ist ein Trübungssensor mit seitwärts weisender Optik, der in Gewässern versenkt werden kann. Er bestimmt suspendierte Festkörper und Trübung für Anwendungen wie z.b. Wasserqualität in Flüssen uns Strömen, Sedimenttransport und Überwachung von Ausbaggerungen. Logger von Campbell Scientific messen die Ausgabe des Sensors und Berechnen die Trübung.
Lesen Sie mehrFunktionen und Vorteile
- Sideways facing optics avoid obstructions above and below the probe
- Measures suspended solids and turbidity for up to 4000 NTUs
- Provides a compact, low-power probe that is field proven
- Compatible with most Campbell Scientific data loggers
- Accurate and rugged
- Stainless-steel body allows use down to 500 m in fresh water
- Titanium body allows use down to 1500 m in fresh or salt water
- 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)
Bilder
Technische Beschreibung
The OBS-3+ uses its sideways-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 sideways-facing optics avoids obstructions above and below the probe. The OBS300 is available for locations that have obstructions around the sides of the probe.
OBS® is a registered trademark of Campbell Scientific.
Kompatibel mit
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Spezifikationen
| Range |
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| Maximum Submersion Depth |
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| Concentration Accuracy |
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| Maximum Concentration Range |
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| 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 | 14.7 cm (5.79 in.) |
| Weight | 181.4 g (0.4 lb) |
-2.5 Output Option |
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| Output Voltage | 0 to 2.5 V (over selected NTU range) |
| Supply Voltage | 5 to 15 Vdc |
| Current Drain | 15 mA |
-5 Output Option |
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| Output Voltage | 0 to 5 V (over selected NTU range) |
| Supply Voltage | 5 to 15 Vdc |
| Current Drain | 15 mA |
-20 Output Option |
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| Output Voltage | 4 to 20 mA (over selected NTU range) |
| Supply Voltage | 9 to 15 Vdc |
| Current Drain | 45 mA |
Dokumente
Broschüren Produkte
Technische Artikel
- OBS and Turbidity Sensors Basics (2Q-P)
- OBS: Effects of Light Absorption and Scattering in Water Samples on Measurements
- OBS Sensors: Light Sources and Photodetectors
- OBS: Effects of Suspended Solids Concentration (SSC)
- OBS Measurements: Effects of Sediment Size
- OBS Measurements: Effects of Sediment Color
- OBS Measurements: Effects of Water Color
- OBS: Effects of Bubbles
- OBS Sensor: Effects of Fouling on the Lens
- OBS Sensors: Sediment Calibration
- OBS Sensors: Turbidity Calibration
- OBS: Comparison of Suspended Solids Concentration (SSC) and Turbidity
Übereinstimmung mit Richtlinien u. Vorschriften
FAQs für
Number of FAQs related to OBS-3+: 19
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The most significant difference between backscatter and side-scatter measurements is the sample volume. A backscatter sensor has a much larger sample volume that helps measure higher turbidity values. The smaller sample volume of side-scatter sensors works better at lower turbidities.
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Sensors are calibrated at the factory for measurements up to 4,000 NTUs, if requested at the time of order. Sensor ranges cannot be adjusted outside the factory.
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The OBS-3+ or OBS300 provides two separate outputs to match the two turbidity ranges selected at the time of purchase. Use the curve that matches the turbidity range likely to be experienced during monitoring. Program the datalogger to record and store data from each output, or choose which output to use automatically depending on the turbidity.
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The beam divergence angle of the sensor is 42°. (Within this 42° cone, 95% of the beam power is contained.)
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The accuracy is 0.5 NTU or 2% of reading.
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This sensor is available with two types of wipers.
- The Hydro-Wiper-C is a battery powered mechanical wiper with a scheduled wiping frequency.
- The Hydro-Wiper-D is a mechanical wiper that is controlled and powered by the datalogger.
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Campbell Scientific does not offer a display that can be attached directly to the sensor; however, the datalogger used to capture and record the data may have a display.
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Possibly. Remember that the accuracy of the sensor is 0.5 NTU. If the drinking water standard is near 1, this sensor may not be a good match.
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No. A datalogger is necessary.
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This has not been tested; however, it is likely that, as the sensor moves through the water, disturbances or bubbles are created that could distort the turbidity measurements.