Duty cycle measure

[Antonio81]

Hi,

this is Antonio Guagnano, I'm working to a new project where I need to control heating system by means duty cycle measure. I attached an easy VI where I just check temperature.

Right now, I need to compare a fix duty cycle with calculated one as time heater on*100/ (time heater off+time heater on).

Can anyone help me?

Thanks in advance 

AG  

[Antonio81]

Hi,

this is Antonio Guagnano, I'm working to a new project where I need to control heating system by means duty cycle measure. I attached an easy VI where I just check temperature.

Right now, I need to compare a fix duty cycle with calculated one as time heater on*100/ (time heater off+time heater on).

Can anyone help me?

Thanks in advance 

AG  

[GerdW · Accepted solution]

Hi AG,

no need to start two threads for the very same problem!

Your VI is a mess: don't (ab)use local variables!

Simplified:

("T. Read" can be deleted when you make the digital display of "Temperature" visible…)

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@Antonio81 wrote:

I'm working to a new project where I need to control heating system by means duty cycle measure. I attached an easy VI where I just check temperature.

Right now, I need to compare a fix duty cycle with calculated one as time heater on*100/ (time heater off+time heater on).

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Where do you need to compare those "duty cycles"? There is nothing related in your VI…