How are atomizer spray plates orifices checked for proper size?

The correct method for checking atomizer spray plates orifices for proper size is through the use of a GO/N-GO gauge. This type of gauge is specifically designed to verify whether a part meets its intended dimensions effectively. The GO gauge determines if the orifice is large enough for fluid to pass through, while the N-GO gauge ensures that the orifice is not too large, which could lead to improper atomization. This precision is crucial in applications that rely on consistent and accurate fluid delivery, such as in various combustion and spray systems.

While visual inspection could potentially identify obvious defects, it does not provide the precision needed to measure the actual size of the orifice accurately. Using a caliper may yield measurements, but it lacks the simplicity and quick validation offered by GO/N-GO gauges. Similarly, a ruler isn't adequately precise for the small dimensions involved in spray plates, making it less effective for ensuring the correct sizing. Thus, the GO/N-GO gauge is the preferred tool for this specific task.