TEMPERATURE AND PRESSURE MEASUREMENTS
The important information from this chapter is summarized below.
Temperature and Pressure Scales Summary
The following properties were defined as follows.
Temperature is a measure of the molecular activity of a substance.
Pressure is a measure of the force per unit area exerted on the boundaries of a
substance (or system).
The relationship between the Fahrenheit, Celsius, Kelvin, and Rankine temperature scales
= -460 °F or -273 °C
Freezing point of water = 32 °F or 0 °C
Boiling point of water
= 212 °F or 100 °C
Conversions between the different scales can be made using the following formulas.
°F = 32 + (9/5)°C
°C = (°F - 32)(5/9)
°R = °F + 460
°K = °C + 273
Relationships between absolute pressure, gauge pressure, and vacuum can be shown
using the following formulas.
= Patm + Pgauge
= Patm - Pvac