Which of the following statements about refrigeration pressure gauges is true?
a. They indicate pressures and corresponding temperatures in a system.
b. Dials on refrigeration pressure gages do not indicate saturation temperature
c. Only one pressure gage is normally installed on a system
d. Smaller systems have no provisions for the installation of pressure gages
e. Permanently installed pressure gages shall be constructed for at least 1.5 times the design pressure
Answer: A