Trübungsmesser / OBS501
OBS501 Smart Turbidity Meter with Antifouling Features
Ideal für höhere SedimentkonzentrationenMit antifouling
wetter wasser energie gas flux and turbulence bauwerke boden

Überblick

Der OBS501 verfügt über duale Rückstreu- und Seitenstreusensoren, einen Verschließmechanismus, der die Linse sauber hält und eine nachfüllbare Biozidkammer zur Vermeidung von Bewuchs wie der OBS500. Bei höheren Sedimentgehalten arbeitet er aber besser U.S. Pat. No. 8429952 (OBS® is a registered trademark of Campbell Scientific.).

Der OBS501 wurde so konstruiert, dass Sand oder andere Partikel nicht zwischen Linse und Abdeckung geraten können, wodurch sich die Abdeckung nicht mehr gut bewegen ließe. Durch Spülen der Optik werden  zusätzlich Partikel entfernt. 
Wenn der OBS501 merkt, dass der Motor der Abdeckung stärker als normal arbeiten muss, wird die Abdeckung leicht vor- und zurückbewegt, um Sandkörner zu entfernen, bevor die Abdeckung ganz geöffnet oder geschlossen wird.

Lesen Sie mehr

Funktionen und Vorteile

  • Dualer Rückstreuungs- und Seitenstreuungssensor zur Messung der Trübung
  • ClearSensorTM Antifouling-Methode für bessere Messungen in biologisch aktiven Gewäsern
  • Mechanismus mit Blende und Wischer sorgt für ein sauberes Fenster
  • Nachfüllbare Biozid-Kammer gegen Fouling
  • Einweg-Plastikhülse erleichert das Säubern
  • Optionale Kupferhülse für zusätzlichen Schutz, (vor allem vor Seewasser) oder Einweg-Plastikhülse erleichern die Reinigung

Bilder

OBS501 in open and closed shutter positions
OBS501 in open and closed shutter positions
OBS501 in open and closed shutter positions
OBS501 in open shutter position
OBS501 in closed shutter position

Technische Beschreibung

Design features of the OBS501 include the combination of a backscatter sensor (better at measuring higher turbidity) with a second sidescatter sensor (better at measuring lower turbidity). It has a shutter that is opened only during measurements, which reduces the time that algae or other organisms can cling to its optics.

The OBS501 is constructed to prevent sand grains or packed sediment from getting wedged between the shutter and sensor body, which inhibits the shutter’s movement. To do this, the OBS501's shutter and body were designed to eliminate parallel surfaces between moving parts wherever possible. The probe also uses a flushing action that moves the sediment down and out of the cavity behind the shutter.

To prevent biofouling and ensure better measurements, the OBS501 incorporates the ClearSensor Method  (U.S. Patent No. 8,429,952. This method uses a shutter/wiper mechanism to protect and clean the optics. With the ClearSensor method, a chamber is also filled with a biocide that continuously leaches out over the optics while the probe shutter is in the closed position. ClearSensor® and OBS® are registered trademarks of Campbell Scientific.

The OBS501 can sense if the shutter’s motor is working harder than normal. If it is, the shutter moves slightly back and forth to dislodge sand grains before fully opening or closing.

Campbell Scientific offers a disposable, plastic sleeve that can make cleanup a snap, as well as a copper sleeve that can provide additional protection, especially in sea water.

Spezifikationen

Dual Probe 90° sidescatter and backscatter
Measurement Range 0 to 4000 NTU
Active and Passive Antifouling Shutter, wiper, biocide, copper, optional removable sleeve
Accuracy ±2% of reading or 0.5 NTU (whichever is greater)
Operating Temperature Range 0° to 40°C
Storage 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
  • 116 m (380 ft) for 1 channel SDI-12 or analog
  • 15 m (50 ft) for RS-232
Length 27 cm (10.63 in.)
Weight 0.59 kg (1.30 lb)

Power Consumption

Quiescent < 200 µA
Measurement < 40 mA
Communication < 40 mA
Active Shutter Motor < 380 mA

Outputs

SDI-12 Version 1.3, 1200 bps
RS-232 9600 bps, 8 data bits, 1 stop bit, no parity, no flow control
Analog 0 to 5 Vdc

Kompatibel mit

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

Datenlogger

Product Compatible Note
CR1000 (retired)
CR1000X
CR200X (retired)
CR216X (retired)
CR300
CR3000
CR5000 (retired)
CR6
CR800
CR850
CR9000X (retired)

Miscellaneous

Product Compatible Note
CR310

Anwendungsbeispiele

Panama: Turbidity in Mine Runoff
Water and Earth Technologies (WET), a Campbell Scientific integrator, is a water resources and environmental engineering firm.......lesen Sie mehr
Panama: Turbidity in Mine Runoff
Water and Earth Technologies (WET), a Campbell Scientific integrator, is a water resources and environmental engineering firm.......lesen Sie mehr
Costa Rica: Buoy System
Overview The existing port of Limon was constructed over 30 years ago. With the increase of......lesen Sie mehr

Artikel und Pressemitteilungen