Modell ONS-U26-001

  • Affordable, high performance dissolved oxygen (DO) monitoring with 0.2 mg O2/l accuracy
  • Optical DO sensor technology for long-lasting calibration with less maintenance
  • Software corrects for measurement drift from fouling; provides salinity-adjusted DO concentrations and percent saturation
  • Optical USB interface for high-speed, reliable data offload
  • Easy-to-replace DO sensor cap lasts six months
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The HOBO Dissolved Oxygen logger is a standalone logger that uses RDO® Basic Technology to measure dissolved oxygen (DO). The logger has an optical sensor that provides 0.2 mg/L accuracy. The logger also features an easily replaceable sensor cap and an integrated temperature sensor. Using HOBOware® software for logger setup and a HOBO Waterproof Shuttle for quick data offload, this logger is easy to deploy in both freshwater and saltwater environments making it an ideal tool for environmental impact studies as well as ecological and oceanographic research. Using the data offloaded from the logger, the HOBOware Dissolved Oxygen Assistant can calculate percent saturation and salinity-adjusted DO concentration as well as correct for measurement drift from fouling (additional meter or logger measurements required).


Spezifikationen
Dissolved Oxygen
Sensor TypeOptical (dynamic luminescence quenching)
Measurement Range0 to 30 mg/l
Calibrated Range0 to 20 mg/l, 0 to 35°C
Accuracy0.2 mg/l up to 8 mg/l,
0.5 mg/l from 8 to 20 mg/l
Resolution0.02 mg/l
Response TimeTo 90% in less than 2 minutes
DO Sensor Cap Life6 months (cap expires 7 months after initialization)
Temperature
Temperature Measurement/Operating Range-5 to 40°C, non-freezing
Temperature Accuracy0.2°C
Temperature Resolution0.02°C
Response TimeTo 90% in less than 30 minutes
Logger
Memory21,700 sets of DO and temperature measurements (64 KB total memory); logging stops when memory fills
Logging Rate1 minute to 18 hours
Time Accuracy±1 minute per month at 0 to 50°C
Battery3.6 V lithium battery, factory replaceable
Battery Life3 years (at 5 minute logging)
Download TypeOptical
Depth Rating100 m
Wetted MaterialsBlack Delrin®, PVC, EPDM o-rings, silicon bronze screws; rated for saltwater use
Size39.6 mm diameter x 266.7 mm length,
mounting hole 7.88 mm
Weight464 g


Broschüre
Betriebsanleitung
PDF Download - 289 KB

Datenlogger > Datensammler und Software
ModellBeschreibungEinsetzbar mit
ONS-BASE-U-4
  • Basismessstation mit Infrarotschnittstelle
  • Serie UA
  • Serien U20 … U24
  • UTBI
ONS-U-DTW-1
  • Wasserdichter Datensammler
  • Basismessstation
  • Serie UA
  • Serien U20 … U24
  • UTBI
ONS-BHW-PRO-CD
  • Software HoboWare Pro 3.0 für Windows/MAC
  • inkl. USB-Verbindungskabel
  • Allen Onset-Datenloggern

Datenlogger > Unterwassereinsatz
ModellMaximale WassertiefeMess-/Überwachungs­größeMess-/Über­wachungs­bereichMesswerte/Status­wechsel
ONS-U24-001
  • 70 m
  • Elektrische Leitfähigkeit
  • Temperatur
  • 0 … 10.000 µS/cm
  • 0 … 36 °C
  • 18.500 Wertepaare
ONS-U20-001-03
  • 112 m
  • Wassertiefe
  • Druck
  • Temperatur
  • 0 … 76 m
  • 0 … 850 kPa
  • -20 … 50 °C
  • 21.700 Wertepaare
ONS-UA-001-64
  • 30 m
  • Temperatur
  • -20 … 50 °C
    (unter Wasser)
  • 52.000
ONS-UA-002-64
  • 30 m
  • Temperatur
  • Beleuchtungsstärke
  • -20 … 50 °C
    (unter Wasser)
  • 0 … 323.000 lm/m²
  • 28.000 Wertepaare
ONS-UTBI-001
  • 305 m
  • Temperatur
  • -20 … 30 °C
    (dauerhaft unter Wasser)
  • 42.000
ONS-U22-001
  • 120 m
  • Temperatur
  • -40 … 50 °C
    (unter Wasser)
  • 42.000

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