Soil Oxygen Sensor MIJ-03
・Can be used for long term observation with easy set-up.
・Automatic temperature compensation.
・No influence by the rain or other waters.
・Easy span calibration.
・Not require to do the zero calibration. 0% Oxygen = 0 mV output.
Difference between dissolved oxygen sensor and soil oxygen sensor MIJ-03
Dissolved oxygen Sensor:
Sensor that measures oxygen dissolved in water. The normal measurement range excluding supersaturation is 20mg/L measured in ppb units.
In the case of permanent installation, be careful of electrode contamination.
Soil oxygen sensor MIJ-03:
Since soil is rarely flooded, an soil oxygen sensor MIJ-03 developed to solve the problem that the dissolved oxygen sensor cannot measure for long term measurement because dissolved oxygen sensor need water to measure oxygen. Since MIJ-03 structure does not care for direct contact between the electrodes and the soil so no maintenance need and permanent installation is possible. The normal measurement range is 0 to 20.9%. Soil oxygen can never be higher than 20.9% of atmospheric oxygen. As a special case, rice field have a period of both flooding and drainage so both dissolved oxygen sensor and soil oxygen sensor MIJ-03 are often use together for this particular field.
Soil Oxygen Sensor MIJ-03
MIJ-03 developed by our company Environmental Measurement Japan in April 2006. MIJ-03 soil oxygen sensor is used for the measurement of the root aspiration. MIJ-03 detects the density of oxygen in the soil by % order without any difficulties, it simply digs up the hole in the soil and lay this sensor into the ground. An usual usage of this sensor is laid in a vertical direction at intervals of 20 to 50 cm. Researchers can measure the vertical profile of the O in the soil.
Why we recommend our MIJ-03?
Soil Oxygen Sensor MIJ-03 is built from a rigid thermoplastic, that allows long-term stability in most environmental conditions; thus it’s life time is maximum about 10 years.
Most users are not willing to maintenance the sensors; MIJ-03 is friendly to those users because it need only minimum maintenance. Once the sensor is installed in the soil, you do not need to care about maintenance.
MIJ-03 can be connected to EMJ data logger MIJ-12 or MIJ-01. If you have your own data logger you may be able to connect MIJ-03; this is because it has a voltage output that can be supported by any compatible data logging system.
|Theory||Galvanic Battery + Porous membrane sheet|
|Output|| 45 – 65mV at 20.9%O2
(Users must check the output at the air before set-up)
|Cable Length||5m (＋/White, -/Black, Shield cable)|
|Temperature Effect||At R.H. 100 % and O2 20.9%.
Sensor out put is 20.8% at 5, 19.4% at 40degree.
At R.H. 0% and O2 20.9%.
It is not influence from the temperature effect