Final answer:
One good feature of an electronic charging scale is that it counts upward as refrigerant is removed, to tell the technician how much refrigerant was used.
Step-by-step explanation:
The statement is true.
One good feature of an electronic charging scale is that it counts upward as refrigerant is removed, providing a clear indication of how much refrigerant has been used.
Most counters of this type are designed to emit an audible "click" and display the measurement on a digital or analog meter in response to the change in voltage, allowing the technician to easily monitor the amount of refrigerant that has been used.