The saturation temp in mQ does not agree with my refrigerant PT chart, my digital gauges, or my refrigerant app, why? The superheat and subcooling are the same.

The saturation temp in mQ does not agree with my refrigerant PT chart, my digital gauges, or my refrigerant app, why? The superheat and subcooling are the same.

The saturation temp in mQ does not agree with my refrigerant PT chart, my digital gauges, or my refrigerant app, why?

The superheat and subcooling are the same.

This is normal and an advantage to using mQ. Your TP chart and most apps do not determine or consider the average coil temperature. measureQuick calculates the average coil temperatures using the weighted midpoint or the midpoint of the refrigerant glide. This is so we can determine the target pressures based on design temperature differences AND so that you know the coil temperature.

The superheat and subcooling are calculated from the dew point and bubble point of the refrigerant.

For a detailed explanation with images and video, see How measureQuick Calculates Superheat & Subcooling. For other refrigerant-related questions, see Refrigeration FAQs.

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