Test and Measurement Forum

I need help to know how to convert voltage to temperature. i am using platinum 100 rtd. is there any equation for that .

Hi

Thank you for your post.

Unfortunately I do not have an equation that I can supply you with. You may have to try and find this from the manufacturers of the sensor.

Best Regards

hi plz help me
i want temperature to voltage conversion circuit or any ic related to it

if u have than do reply

nisha.r wrote:I need help to know how to convert voltage to temperature. i am using platinum 100 rtd. is there any equation for that .

i m also looking for a temperatue to voltage converter .
if u find it then do help me

Hello,

There are various equations that can do this for you. There are also various lookup tables that can also perform this function.

A simple google search will find these for you:
http://www.picotech.com/applications/pt100.html
http://www.sensingdevices.com/prtd4.htm
http://www.google.co.uk/search?hl=en&q= ... arch&meta=

Or:
http://www.google.co.uk/search?hl=en&q= ... arch&meta=

Best regards,
Michael

hi
i want help in my project
i want any circuit related to change temperatue into voltage or temperature sensing ic with o/p voltage ranging from 0 -10 volt
temperature ranging from 0-100centigrade

o/p changing linearly with 100mV/C

if anyone can help than do reply.

Simii wrote:hi
i want help in my project
i want any circuit related to change temperatue into voltage or temperature sensing ic with o/p voltage ranging from 0 -10 volt
temperature ranging from 0-100centigrade

o/p changing linearly with 100mV/C

if anyone can help than do reply.

Use an LM-35 (0-100 mV represents 0-100 C) and an appropriate amplifier with the required gain (100) to get 0-10 Volts.

I have this project and i need any devise that can sense temperature in a refrigerator and convert it to voltage that my radio can relay to the base station, Can any body help me with this

[quote="nisha.r"]I need help to know how to convert voltage to temperature. i am using platinum 100 rtd. is there any equation for that .[/quote]

Hi this may not be practical as the voltage change will be small and you would need a highly accurate measuring device. This is why we have a unit designed to do this:

http://www.picotech.com/pt100.html

What temperature range are you looking at ? It may be more practical to use a thermistor.

Kind regards