Temperature Probe

This function board is used to measure temperature as an analog input. The actual sensor is a 10k thermistor on the end of a 7 ft cord. The latest generation of this sensor is encased in a stainless steel tube with an epoxy filling. The sensor should be able to withstand water and rain.

Temp Sensor 1

 

The pass-through connector on the back of the temperature probe does not have a connection for analog input. Connecting another circuit to the analog input would negatively affect the sensor readings. Therefore, an ambient light sensor and temperature probe cannot exist on the same I/O channel.

A maximum of four temperature probes can be used be a single IO-204 web gateway at one time. This is because the IO-204 has four analog inputs.

 

The circuit diagram for this function board is as follows:

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