In a typical electronic Co2 level control system, when the sensor detects the CO2 refrigerant level is below a threshold value, it sends a signal to the control system. The control system actuates a valve that lets in CO2 from a storage tank.
The supply is stopped when the sensor detects that the CO2 level has reached the upper limit. Carbone dioxyde systems have a higher likelihood of leakage than traditional refrigerant systems.
As there is less charge in a vapor compression system using carbon dioxide as the refrigerant, a leak has a greater influence on system performance.
Hence CO2 level control systems play an important role in operation of the refrigerant system
The Climate Registry was published in draft form as early as May, 2007. It documents and outlines the requirements for carbon (CO2) emissions reporting. Many organizations are wondering why it is so important.