dear all
Please tell me if the RTD sensor signal is considered as an analog input or not

thanks

 

It doesn't meet the definition of discrete.

And we don't know what your definition of "analog" is.

In my world, it's an analog signal because it's not simply a "1" or "0".

In some people's world, an analog signal is only something that has a fixed range, like 0-5 VDC or 4-20 mA.

If you're trying to connect an RTD to an "analog" input that's defined as either a voltage or a current with a fixed range, it's not going to work.

There are transmitters that use RTDs as their sensing element and convert the signal from the RTD into a variable value with a fixed range.

We don't know enough about what you're trying to do or understand.

Go to omega.com and search for RTD; you will find lots of information there.

 

Seifj... The IEEE Std 100 definition is, "Analog data, implies continuity as opposed to digital data, that is concerned with digital states!"

In a 1960 Hewlett Packard Co computer course Analog was defined as "A characteristic that is continuous in form as opposed to digital, which is characterized by discrete levels!

Regards, Phil Corso

 

RTD do not generate any signal. It is a secondary type of transducer, Its resistance changes with temperature.

Now to measure it we have to engage one primary signal generator if that is digital it will give u a digital signal like microprocessor controlled relay if an analog signal generator is provided like 4-20mA current gen than it will produce a analog voltage signal.