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Part Number -
W-DO
Dissolved Oxygen Sensor
$995.00 USD
A dissolved oxygen and temperature sensor for use with HOBO MX800 Series Water Loggers
Important Information
Requires a HOBO MX801 or MX802 Data Logger, the HOBOconnect app, and a compatible mobile device or Windows computer. System requirements for the app can be found at the bottom of our HOBOconnect software page.
Compatible with
Overview
The dissolved oxygen sensor is an interchangeable sensor that works with HOBO MX800 Series Water Loggers to measure dissolved oxygen and temperature.
The DO sensor can be attached directly to the fully submersible MX801 model, or attached via cable to the direct read MX802 model, which doesn’t require having to pull the sensor out of the water to download data.
When this sensor is connected to a HOBO MX800 logger that also has a conductivity or CTD sensor attached, the logger can record salinity-adjusted DO directly. With this sensor attached to the HOBO MX802 direct read model, the logger can calculate DO percent saturation directly. When used with fully submersible HOBO MX801 model, a barometric logger data file (from either an MX802 or MX2001 logger) is needed to calculate DO percent saturation, for post-processing in the HOBOconnect app. In waters with changing salinity, the logger must also have a salinity sensor attached or you will need an MX800 salinity data file to get DO percent saturation.
Features
- User-replaceable DO cap lasts 2 years or more
- High accuracy measurements, even without calibration
- Get salinity-adjusted DO directly when used with conductivity sensor (W-CT or W-CTD), no need for post-processing
- Direct DO percent saturation data, no need for post-processing (when used with MX802)
- Easy calibration with included calibration boot – saves time
- 1” diameter for use in narrow wells (with cable to MX802 above the well)
- PVC housing holds up in saltwater
Specifications
Dissolved Oxygen
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(dynamic luminescence quenching)
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0 to 60 mg/L; 0-600% Saturation
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Out-of-box: ±0.2 mg/L (typical) over the range of 0 to 20 mg/L±4% over the range of 20 to 60 mg/LWith user calibration: ±0.1 mg/L over the range of 0 to 20 mg/L; ±2% over the range of 20 to 60 mg/L
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0.01 mg/L
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Accuracy is maintained for 2 years; aside from the effects of fouling
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To 90% in less than 45 sec
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2 years; after this the sensor will continue operate, but possibly with less accuracy
Optical Sensor
Measurement Range
Accuracy
Resolution
Sensor Drift
Response Time
DO Sensor Cap Life
Temperature
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-5 to 50°C (23 to 104°F), non-freezing
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0.15°C (0.27°F)
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0.01°C (0.04°F)
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To 90% in less than 15 minutes
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When using this sensor, the maximum logging rate is 1 min
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IP-68, waterproof to 100 m (328 ft) - must be attached to logger and have DO sensor cap installed
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Black Delrin®, PVC, EPDM o-rings, rated for saltwater use
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To Be Determined
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Temperature Measurement/Operating Range
Temperature Accuracy
Temperature Resolution
Response Time
Logging Rate
Depth Rating
Wetted Materials
Size
Markings
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The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).
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Compatible items
What's in the box
- Dissolved oxygen sensor
- Dissolved oxygen sensor cap
- Calibration boot and sponge