Data conversion is handled by equation. SiteView comes with embedded factory equations for all channel types that data loggers support. For example “VoltageDC” equation is for any voltage channel type. If you apply this equation to the channel the output will be in Voltage.
Every unit category contains one or more units. For example Voltage category contains Volt, Millivolt, Microvolt, Killovolt. You can assign a unit to be the default unit under the same unit category. SiteView will use the default unit when it does the data conversion. If your measurement is different from the unit the channel type has, you can
- Choose “Linear” equation and fill out the parameters. Please refer to the following link for details:
How can I convert the original readings to preferred engineering values?
- Create your own custom equation and custom unit category.
In the above example, if the CO2 transducer outputs 0-5 VDC refers to 0-3000PPM of CO2, then the custom equation can be:
public double MyCO2Equation(double Input)
{
double retvalue = 0;
retvalue = (3000 * Input ) / 5;
return retvalue;
}
You also need to create a new unit category for the CO2 transducer. When you create your equation you can choose that unit category.
Please refer to following link for a custom equation: