Can a 1-wire temperature sensor be easily turned into a PT100 or PT1000 sensor?

I have a 1-wire sensor which has the design I need and a hardware for working with PT100/PT1000 sensors. Can I turn the 1-wire sensor into a PT100/PT1000 sensor easily?

Note: this question has been raised during planning an electrical HERMS.

Topic electric brewing homebrew

Category Mac


Sorry, the two are very different - to make a OneWire sensor look like a PT100 sensor, you'd have to find some way to recreate the resistance in the wire that varies with temperature, which is how a PT100 works. The simplest way to do that would be to use a real PT100 sensor - emulating a PT100 sensor would be much harder and most likely introduce more error than just using a PT100.

On the other hand, can you change your sensing hardware to accept a OneWire sensor? See brewpi.com for an example.


you may want to ask this on the electronics stack exchange.

but to answer this here.

no, you cant replace a PT100 sensor, with a 1-wire temp sensor.

PT100/1000 are analog sensors, 1 wire sensors are digital.

as to convert a 1 wire, to an analog sensor, all depends on your knowledge of electronics, easy if you know a lot, hard if you dont know anything...

the way I would convert it would be to use a micro controller, like an msp430, to read the 1 wire, and then use pwm or a DAC Digital potentiometer to send the analog signal to your hardware.

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