I have a project for work where I am going to need a Natural Gas sensor and Ambient Temperature sensor attached to an Arduino UNO. The Uno is about 20' away from the sensors outside of the enclosure. The enclosure will be between -10 degrees to 180 degrees, there will be some moisture and dust.
Questions
What is the highest quality temp/moisture sensor that would be good in this situation?
Will the 20 feet of wire reduce the accuracy of the temp/gas sensor?
I have a project for work where I am going to need a Natural Gas sensor and Ambient Temperature sensor attached to an Arduino UNO. The Uno is about 20' away from the sensors outside of the enclosure. The enclosure will be between -10 degrees to 180 degrees, there will be some moisture and dust.
Questions
What is the highest quality temp/moisture sensor that would be good in this situation?
Will the 20 feet of wire reduce the accuracy of the temp/gas sensor?
I appreciate your time helping me answer these.
Matt
Well, first off, without knowing the sensor, the answer to the wire length question cannot be answered.
What sensors have you examined, then we have a chance of answering, providing you have links to their data sheets.
Perhaps you already know the answer, so didn't ask, but I will. What effect will the temperature have on the power for your sensors? What type of power?
You can roll your own temperature sensor by using a diode and reading the reversed bias leakage voltage. You can use mini-coax as a wire. You can cover the diode with silicon. You can put the sensor into water and ice mix to calibrate the sensor on one end and put the sensor into boiling water for the other end.
Not enough information to answer anything. You haven't even said what the temperature is measuring, or even if it degrees C or F. The only real information is that you intend to connect the sensors to Arduino with about 20 feet of wire. In that case you might use the wire to power the sensors and a remote Arduino or ESP that sends the signal wirelessly, thereby removing the question about how well any unknown sensor can deliver over 20 feet. You can save on wire too, to the point where it might be price-competitive.