I understand that a thermocouple is an instrument that produces a voltage at the junction of two different metals that is dependent on temperature, and is later referenced, amplified, conditioned and measured by special circuitry.
I've assembled and used circuitry for this purpose and have few doubts as to how it works.
However, there's one idea that has long been on my mind lately and I'm wondering if it's possible.
I'd like to build a single thermocouple capable of measuring temperature at multiple points. Say I consider building a "K" type thermocouple. For this purpose I'd use a single chromel wire, to which several alumel wires are welded at even spacing along its length.
In the end the assembly would look something like this:
Using the chromel wire as "common" would save on the amount of wiring involved.
Is this possible? wouldn't the signals from the multiple thermocouples interfere with one another?
I've assembled and used circuitry for this purpose and have few doubts as to how it works.
However, there's one idea that has long been on my mind lately and I'm wondering if it's possible.
I'd like to build a single thermocouple capable of measuring temperature at multiple points. Say I consider building a "K" type thermocouple. For this purpose I'd use a single chromel wire, to which several alumel wires are welded at even spacing along its length.
In the end the assembly would look something like this:
Using the chromel wire as "common" would save on the amount of wiring involved.
Is this possible? wouldn't the signals from the multiple thermocouples interfere with one another?