D-Opto Optical Dissolved Oxygen Sensors
D-Opto - Logger
Simple to operate, the rugged low power D-OptoLogger optical dissolved oxygen and temperature logger allows time-course data to be logged for more accurate assessment of oxygen dynamics, while enduring long field deployments between servicing.
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- Typical power endurance exceeds 30 days for all logging intervals (around 3 months at 15 minute logging interval)
- Simple to operate
- Easy to deploy
- Field replaceable 9-volt battery
- Simple software with data graphing function makes field servicing quick and straightforward
- Logs dissolved oxygen saturation (%) content (PPM) and temperature
- Compact, easy to deploy underwater housing
- Supplied with D-OptoLog software for deployment set-up, data offload and calibration
- The data is stored on-board in non-volatile memory
- Data offloaded using simple Windows based software, supplied with the instrument
- Logger can be set to stop logging when memory is full
The D-OptoLogger enabled Dr Young and his team to accurately and safely measure dissolved oxygen concentrations every 5 minutes at various sites along each river." – Dr Roger Young (Cawthron Institute New Zealand), following a survey of the health of 11 large rivers across New Zealand.
Accuracy
- Dissolved Oxygen: 1% of measurement or 0.02ppm (whichever is greater)
- Temperature: +/- 0.1 Deg C
Resolution
- DO Saturation: 0.01%
- DO Content: 0.001 PPM
- Temperature: 0.01 Deg C
Memory
- Logger memory: Non-volatile, 10080 data records
- Logged record: Time, date, DO% and DO PPM
Physical
- Size: 48mm diameter x 200mm long
- Depth rating: 30 metres
- Bio-fouling control: Copper guard around sensor window
Power
- Battery: 2 x 9 volt alkaline (PP9)
- Battery endurance: Around 3 months at 15 minute logging interval, DO PPM, Temperature Deg C
Software
D-OptoLog supplied at no charge
- D-Opto field proven optical technology
- Measures temperature, dissolved oxygen saturation and dissolved oxygen content
- Excellent long-term stability
- Low power consumption
- Simple calibration procedure
- Copper anti-fouling ring around the optical window
- Minimal servicing requirements
- 30 meter depth rating
- No consumables