Temperature Sensor

[PhysicsUofRAUI]

Is a infrared sensor (contactless) needed? I initially thought this would be best since it would isolate the sensor from the grain, dust and pressure from having so much grain in the bin.

Will these issues bother the sensor or is using a regular and cheaper sensor the better option?

Here is the two sensors I have found online so far (for reference):

• (https://www.sparkfun.com/products/9570)
• (https://www.gadgetstrading.nl/ldtr-wg0091-ir-infrared-temperature-module-sensor-for-arduino.html?fee=1&fep=111419&utm_source=google&utm_medium=cpc&utm_campaign=google+shopping&utm_term=paid)

[PhysicsUofRAUI]

It has been decided that the DHT 22 sensor will be used.