Apogee oxygen sensors are designed to measure 0 – 100% oxygen and
come with tinned leads to connect to a datalogger. The SO-110 is
designed for use in soil applications with a larger signal, slower
response and longer life. It comes with a thermistor temperature sensor
to correct for temperature changes. In applications with high
humidity, condensation can occur on the Teflon membrane, blocking the
diffusion path of the sensor. To prevent this, a resistive heater is
included to raise the temperature of the membrane approximately two
degrees above ambient temperature. Select a diffusion or flow-through
head if needed depending on your application. The sensor is calibrated
to ambient air making it very easy to calibrate. An aluminum housing
that is filled with epoxy allows the sensor to withstand harsh
conditions.