Apogee Soil Oxygen Sensors
The Apogee oxygen sensors measure gaseous oxygen between 0 and 100%. The oxygen sensor is available as a portable version with handheld meter, thermistor or thermocouple, fast response and with an SDI-12 output.
It is designed for measuring oxygen levels in soils, compost piles and other environments for climate monitoring purposes. it also helps for determining respiration rates from measuring O2 usage from soils and any porous media.
The Apogee Oxygen sensor is available as:
- Portable Oxygen sensor with handheld meter and 2 m cable.
- Thermistor reference oxygen sensor
- Thermocouple reference oxygen sensor
The oxygen sensor is also available as an SDI-12 output sensor (thermistor only).
Apogee Soil Oxygen Sensors
Portable:
- MO-200: Oxygen sensor with handheld meter, 2 m cable.
Thermistor:
- SO-110: Soil response thermistor reference oxygen sensor, 5m cable. (DISCONTINUED)
- SO-210: Fast response thermistor reference oxygen sensor, 5m cable. (DISCONTINUED)
- SO-130: Soil or atmospheric applications sensor, analog, 5m cable
Thermocouple:
- SO-120: Soil response thermocouple reference oxygen sensor, 5m cable. (DISCONTINUED)
- SO-220: Fast response thermocouple reference oxygen Sensor, 5m cable. (DISCONTINUED)
SDI-12 (thermistor only):
- SO-411: Soil response thermistor reference oxygen Sensor, SDI-12 output, 5m cable. (DISCONTINUED)
- SO-421: Fast response thermistor reference oxygen Sensor, SDI-12 output, 5m cable. (DISCONTINUED)
- SO-431: Soil or atmospheric applications sensor, SDI-12, 5m cable
Notable specification changes with the new SO-130/SO-431 sensors:
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The old oxygen sensors measured 0-100 % oxygen, while the new sensors measure 0-30 % oxygen.
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The old oxygen sensors came in fast (14 s) or slow (60 s) response options. The new sensors have a response time of 15 s.
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The old oxygen sensors came with the option to have a thermistor or thermocouple. The new sensors only come with a thermistor, the recommended option of the two.
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Full technical specifications can be found on the Apogee Instruments Website
The Apogee Oxygen sensors has a range of accessories to customise the sensor for specific applications.
Apogee offer two head options:
- AO-001: Diffusion Head: The diffusion head creates a small air pocket for measurement in porous media
- AO-002: Flow through Head: The flow-through head with two adapters for tubing that allows measurement of gas flowing in lines.
The AO-003: Panel mount nut with O-Ring enables the fitting of an Apogee oxygen sensor to a flat surface, such as a container, to measure the oxygen content.
