What Is This Tool?
This tool converts pressure values from millimeter water at 4°C to inch water at 60°F (inAq). It is designed for translating low-pressure measurements commonly used in HVAC systems, cleanroom monitoring, and gas service regulation into a more widely recognized unit.
How to Use This Tool?
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Enter the pressure value in millimeter water (4°C)
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Select the target unit as inch water (60°F) [inAq]
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Click convert to obtain the equivalent pressure in inAq
Key Features
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Converts pressure from millimeter water (4°C) to inch water (60°F)
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Accommodates temperature-specific water density differences
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Browser-based and easy to use
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Supports applications in HVAC, lab experiments, and residential gas settings
Examples
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10 millimeter water (4°C) equals 0.394078998 inch water (60°F) [inAq]
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25 millimeter water (4°C) converts to 0.985197495 inch water (60°F) [inAq]
Common Use Cases
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Measuring duct and filter pressure drops in HVAC systems
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Specifying pressures for residential gas service and regulator settings
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Reading differential pressure sensors in ventilation and cleanroom environments
Tips & Best Practices
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Ensure source pressure is measured at 4°C and target at 60°F for accurate results
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Use this conversion for low-pressure ranges where such units are standard
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Be aware of temperature effects on water density when interpreting results
Limitations
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Conversion is valid only for water at specified temperatures (4°C and 60°F)
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Results may be inaccurate if applied outside the stated temperature conditions
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Does not account for local gravity variations or fluid impurities affecting pressure
Frequently Asked Questions
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Why does temperature matter in this pressure conversion?
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Because the density of water changes with temperature, the units specify water at 4°C and 60°F to reflect consistent pressure measurements.
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Can I use this conversion for high-pressure measurements?
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This conversion is intended for very small pressure differences and may not be suitable for high-pressure values.
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Is this conversion accurate for fluids other than pure water?
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No, it specifically applies to pure water at the given temperatures and may not be accurate for other fluids.
Key Terminology
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Millimeter water (4°C)
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Pressure exerted by a 1 mm column of pure water at 4°C under standard gravity, used for measuring very small pressures.
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Inch water (60°F) [inAq]
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Pressure equal to that exerted by a 1-inch column of water at 60°F, used for low pressure differences dependent on water density.
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Hydrostatic Pressure
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The pressure exerted by a fluid at equilibrium due to the force of gravity.