HVAC Temperature Measurement ConversionHVAC Temperature Measurement Conversion - In air conditioning and heating applications it is necessary to accurately measure temperature to offer control of the temperatures relative to the application for which the HVACR equipment is serving. There are four separate temperature scales used to measure temperature and it becomes necessary at times to have the ability to convert between the different scales. Aside from the temperature measurement scales and their use in HVAC, there are also methods for using specific tools to make those measurements. For example, in many cases, a technician needs to know the dry-bulb temperature and the wet-bulb temperature. In the old days, a technician would use a sling psychrometer to get the wet-bulb temperature. Today, there are digital instruments that will measure the wet-bulb temperature for the technician. Here we begin with temperature conversion: 

HVAC Temperature Measurement Conversion

The two most common scales used by most people are Fahrenheit and Celsius. Fahrenheit is mostly used in the United States where the culture has resisted changing from standard measurements to the metric system. Celsius is used throughout the world including the United States and Canada. Scientist often uses Kelvin and Rankine measuring scales to measure temperature. These temperature scales, Rankine and Kelvin, are uncommonly used in popular culture no matter where you live in the world except by the scientific community and are often used to measure extreme temperatures.

Temperature Conversion

Degrees Celsius to Degrees Fahrenheit

1.8 X Temperature Celsius + 32 = Temperature Fahrenheit

Degrees Celsius to Kelvin

Degrees Celsius + 273 = Kelvin

Degrees Fahrenheit to Degrees Celsius

(Temperature Fahrenheit - 32) / 1.8 = Temperature Celsius

Degrees Fahrenheit to Degrees Rankine

Temperature Fahrenheit + 460 = Degrees Rankine

Kelvin to Degrees Rankine

1.8 X Kelvin = Temperature Rankine

Kelvin to Degrees Celsius

Kelvin - 273 = Degrees Celsius

Admittedly, it is unusual for a technician to have to convert in the field except in some cases where the manufacturer of any given product did not enclose the proper paperwork with their new equipment or perhaps a mistake was made and the proper paperwork was not included with the new equipment. I think the only way a technician would require these conversions on a regular basis is if they worked in a lab of some kind and they were constantly crunching data. Doesn’t matter, it is still good to have a reference for these things when they do occur. Be proficient to stay ahead of the pack.

High Performance HVAC

HVAC Temperature Measurement Conversion

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