In refrigeration, what does PSIG stand for?

PSIG stands for "Pounds per square inch, gauge." This term is commonly used in refrigeration to measure the pressure of a gas or liquid in relation to atmospheric pressure. The "gauge" designation indicates that the measurement does not include the atmospheric pressure; instead, it reflects the pressure above atmospheric levels.

Understanding PSIG is crucial in refrigeration applications because it allows operators to monitor and manage system pressures effectively, ensuring that the refrigeration system operates within safe and efficient parameters. This measurement helps in diagnosing system performance and troubleshooting potential issues related to pressure imbalances.

The other options provide alternative interpretations of the acronym, but they do not accurately describe the standard measurement used in refrigeration. For instance, Pascals is a metric unit, and the inclusion of "global" or "pressure standard in gas" does not align with the established terminology in the field. This reinforces the importance of familiarity with industry-specific terms for effective communication and operation within refrigeration systems.