If a static pressure transmitter has a range of 0-6 inches of water, what would be the expected pneumatic equivalent at 4.5 inches of water?

To determine the pneumatic equivalent of a static pressure of 4.5 inches of water, we need to convert the water column measurement into psi (pounds per square inch). The conversion factor is based on the fact that 1 inch of water column is equal to approximately 0.0361 psig.

First, we would calculate the pressure in psi from the given inches of water by using the formula:

Pressure (psig) = Height of water column (inches) × Conversion factor (0.0361 psig/inch)

By substituting 4.5 inches into the formula:

Pressure (psig) = 4.5 inches × 0.0361 psig/inch = 0.16245 psig

This result shows just a small pressure equivalent, which appears to be off from the options provided, hinting at a need to clarify the interpretation.

The context may also lead us to consider the total pressure that accounts for atmospheric pressure, in scenarios where a gauge (not absolute) is being referenced. Since the options provided indicate larger values than what we've calculated, the interpretation could involve different pressure scales or adjustments necessary within specific control systems or pressure contexts used in HVAC or industrial settings.

Hence, recognizing