I my project I need to have 2 temperature sensors. One sensor to act as a reference temperature and the other as the ambient temperature sensor.
I am currently using 2 DS18B20.
Using the DS18B20 as the reference sensor is totally ok as it just needs to record the temperature in a sealed environment however the DS18B20 is not very fast at reacting to ambient temperature sensing.
Is there a better temp sensor that is very quick at registering temp changes. For example opening a fridge door and holding the sensor in your hand your place your hand into the fridge and then pull it out and it registers the change a lot more quickly than the DS18D20 does.