Dear Sir or Madam,

My customer has the engine with Pt 100 temperature sensor and wants to show the temperature value measured by this sensor on the PV780. The resistance vs. temperature is as below;

Temp. (deg. C) ; Resistance (Ohm)
0 ; 100.00
100 ; 138.51
200 ; 175.86
300 ; 212.05
400 ; 247.09
500 ; 280.98
600 ; 313.71
700 ; 345.28
800 ; 375.70

Could you please let me know how to make a script to convert the resistance value to the temperature? If you provide me with a sample configuration, that helps me a lot and I would very much appreciate.

Best regards,

T. Takehara

Hello T Takehara,

There is some discussion and an example of a fuel sender input at this post viewtopic.php?f=7&t=879&p=2332&hilit=analog+input#p2332. It is informative about using the analog inputs and the 400 ohm resistor.

PowerVision Configuration Studio 2.7 changed the way inputs are configured, the input setup starts on the Library tab, under IO Definitions. You need to add an IO Definition on the left side first, then complete the setup on the right according to your requirements.

Also, if you are using a 2.7 version of PowerVision Configuration Studio, you have the option of setting up a graph with the input data instead of using a script. Since you have the data, the graph will be simple to create under the Pre Defined Curves tab using Interpolate. The graph you create will be referenced in the Input Settings\Selected Curve dropdown box to setup your input. You don't have to do a script and you don't have to do additional caclulations. It is much simpler.

You asked about a script, so I am attaching a configuration with two analog inputs and a frequency input. This configuration was created with 2.1 and we have imported it several times to bring it up to the 2.6 version. The scripts are still usable and will provide you with examples as you have requested.

Let us know how your configuration develops!

Dear stalley,

Thank you very much for your reply. This information helps me a lot!

I made the curve definition by putting the reference points and reference value in the Pre Defined Curves tab.
I will check if it works correctly.

Best regards,

T Takehara