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Specification Sheet

Home      Soils      Soil Oxygen      Soil Oxygen Meter      ICTO2 Soil Oxygen Sensor

Optimal logging solution:   Soil Oxygen Meter

ICTO2 Soil Oxygen Sensor

For measuring root respiration
It detects the density of oxygen in the soil by percentage order.

The usual usage of this sensor is to place the sensor vertically at intervals of 20 to 50 cm. The vertical profile of the O2 in the soil can then be measured. To install, auger a hole in the soil and place this sensor into the hole.





More Details       

Geotechnical Engineers

The ICTO2 Soil Oxygen Sensor is not affected by saline or sodic soils and can be used in wide ranging applications. For example, in the mining and landfill industries the sensors could be buried in wastes to aid assessment of the effectiveness of covers designed to reduce oxygen flux into the waste.

Plant Physiologists

Plant species vary in their tolerance to anaerobic and oxygen deprived soils. The Soil Oxygen Meter can quantify the exact level of tolerance for all plant species.

Figure 4 - click to show
Plant root systems uptake oxygen to support respiration and other energy requirements. Figure 4 shows a correlation between photosynthetically active radiation (PAR) and soil oxygen where a noticeable decrease in soil oxygen content occurs during the day. With additional measurements this decrease in oxygen content can be related to plant or microbe activity. The formation of aerenchyma in plant roots is a common morphological response to decreased oxygen in soils. The Soil Oxygen Meter can be used to quantify the level of soil oxygen content whereby this occurs for individual plants.

Specifications

Sensor Specifications

Theory Galvanic battery + porous membrane sheet
Shape Diameter 35 mm, length 65mm
(cable connector length 50mm)
Output 45~65 mV at 20.9 % O2
(users must check the output of the air before set-up)
Weight 220 grams (includes 3m cables)
Cable Length 3 m (+ white, - black, shield cable)
Temperature effect At R.H. 100 % and O2 20.9 %. Sensor output is 20.8 % at 5 C, 19.4 % at 40 C. At R.H. 0 % and O2 20.9 %. Sensor output is not Influenced by temperature.
Temperature 0~40°C when in use

Meter Specifications

Instrument Logging
Instrument Specification Brochure
Analogue Channels 5 double ended or 10 single ended
Resolution 0.00001V—24-Bit
Accuracy 0.001V
Minimum Logging Interval 1 second
Delayed Start Suspend Logging, Customised Intervals
Sampling Frequency 10Hz
Data
Communications USB, Wireless Radio Frequency 2.4 GHz
Data Storage MicroSD Card, SD, SDHC & SDXC Compatible (FAT32 format)
Software Compatibility Windows XP, Vista and Windows 7
Data Compatibility FAT32 compatible for direct exchange of SD card with any Windows PC
Data File Format Comma Separated Values (CSV) for compatibility with all software programs
Memory Capacity 2GB expandable to 64GB
Operating Conditions
Temperature Range -40 ° C to +80 ° C
R/H Range 0-100%
Upgradable User Upgradeable firmware using USB boot strap loader function
Power
Power supply 12V DC 2-wire non polarized bus
Power Consumption 20 mA
Internal Battery Monitoring Logging internal battery voltage & charging current
Charging Rate Automatic variable rate of charging to maximise solar panel charging current on full sun days and or under low light cloudy conditions Variable current 10 mA to 200 mA


Image Gallery

Related Products

Soil Oxygen Meter

The Soil Oxygen Meter (SOM) can support up to ten ICT02 Soil Oxygen Sensors. The SOM is ideally used in combination with an ICT Light Sensor Meter (LSM) to obtain data in Figure 4. The SOM is also used in combination with ICT's Soil Moisture Meter (SMM) and for measurement of water potential, Soil Tension Meter (STM).
Features
  • Can be used for long - term observation with easy set-up.
  • Automatic temperature compensation as it has a built in thermo-couple compensation circuit.
  • Not influenced by the rain or water. TEFLON water protection.
  • Easy span calibration. Users can calibrate at the usual atmosphere (20.9 % Oxygen concentration).
  • Zero calibration is not needed. 0 % Oxygen = 0 mV output.
Optimal logging solution:   
Soil Oxygen Meter


Logging:
  • Stand-alone logging
  • MicroSD expandable memory
  • Wireless connectivity and data transfer
  • Simple conversion and scripting
  • Flexible sensor calibration, look-up tables, and user scripts
  • 24-Bit resolution
  • IP68 rated water proof enclosure
  • Free Windows utility configuration software
  • Optional wireless logging via MCC1    
Power management:
  • Field: solar power and 12V battery
  • Lab: main power supply
  • Internal Lithium-Polymer battery
  • Internal voltage regulation
  • Optical isolation lightening protection
Applications
  • Geo, Civil and Environmental Engineering
  • Hydrology Management
  • Mine Site, Land Fill, Road & Railway Monitoring
  • Plant Canopy Monitoring


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ICT International Pty Ltd     P.O Box 503, Armidale, NSW, 2350, Australia     Ph: +61-2-6772 6770

ICT International has provided solutions for soil, plant and environmental monitoring since 1982.
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