My Google skills have been slacking and I can't seem to find a sensor that can take that much heat. I am also very new to this world and may not be sure what else or where to search.
I see the DHT11 all over the place, they just are not rated to withstand that heat. Any direction or advice would be much appreciated.
eDaddi:
My Google skills have been slacking and I can't seem to find a sensor that can take that much heat. I am also very new to this world and may not be sure what else or where to search.I see the DHT11 all over the place, they just are not rated to withstand that heat. Any direction or advice would be much appreciated.
Lookup K-Type thermoCouple.
Chuck.
Hey thanks for the reply, I'm actually using one of those in this project. They don't do humidity though. I'm looking for a humidity sensor that can withstand sitting in a box that gets up to 450*
eDaddi:
Hey thanks for the reply, I'm actually using one of those in this project. They don't do humidity though. I'm looking for a humidity sensor that can withstand sitting in a box that gets up to 450*
Humidity sensors work by measuring the heat capacity of the medium. If the environment is 450F you will have to build your own. One TC measuring ambient, one measuring a hotplate with a known E heater.
The biggest problem I see is the inaccuracy of K-type sensors The head capacity of the medium would be lost in the noise of the sensor. I use K-types, but +-2F is acceptable, to calculate the heat capacity you would need sub degree accuracy.
Either a pulsed system, or a controlled flow orifice.
Chuck.
You can derive the humidity from the speed of sound in theory.
See my post here - Ultrasonic sensor to determine water level? - Sensors - Arduino Forum -