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.
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.
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.