What does a foot water (4°C) represent?

It is a pressure unit equal to the hydrostatic pressure from a 1-foot column of pure water at 4°C, used to express low pressure or hydraulic head.

Where is the dekapascal unit commonly used?

Dekapascal is used in audiology for middle-ear pressure, HVAC for small pressure differences, and laboratory calibration of low-pressure sensors.

Why is temperature important when using foot water units?

Because the unit is defined based on the density of water at 4°C, changes in temperature can alter water density and affect pressure values.

How to Convert from Foot water (4°C) [ftAq] to Dekapascal [daPa]?

Convert pressure measurements from foot water (4°C) to dekapascal easily with our unit converter designed for engineering, laboratory, and HVAC applications.

Foot water (4°C) [ftAq]

Dekapascal [daPa]

Please check your input. It must be a valid numeric value.

Foot water (4°C) [ftAq] to Dekapascal [daPa] Conversion Table

Foot water (4°C) [ftAq]	Dekapascal [daPa]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

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Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Foot water (4°C) [ftAq] to Dekapascal [daPa] Conversion Table
Foot water (4°C) [ftAq]	Dekapascal [daPa]

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What Is This Tool?

This online converter allows you to transform pressure values measured in foot water (4°C) into dekapascal units. It is designed for users needing to interpret hydrostatic pressure based on water column height and express these pressures in standardized SI units.

How to Use This Tool?

Enter the pressure value in foot water (4°C).
Select foot water (4°C) as the input unit.
Choose dekapascal [daPa] as the output unit.
Click the convert button to get the result displayed in dekapascal.
Refer to provided examples for clarity on typical conversions.

Key Features

Converts from foot water (4°C), representing hydrostatic pressure by a 1-foot water column at 4°C.
Outputs pressure in dekapascal (daPa), an SI-derived unit equal to 10 pascals.
Supports applications in hydraulic head analysis, HVAC, audiology, and laboratory pressure calibration.
Browser-based and easy to use with straightforward input and selection options.
Provides conversion examples for quick reference.

Examples

2 foot water (4°C) equals 597.796 daPa.
0.5 foot water (4°C) equals 149.449 daPa.

Common Use Cases

Determining hydraulic head or low pressures in water distribution and pumping systems.
Interpreting gauge or manometer readings in HVAC and fluid instrumentation.
Measuring static head for groundwater and well monitoring.
Calibrating low-pressure sensors in laboratory and cleanroom environments.
Performing audiology tympanometry and middle-ear pressure analysis.

Tips & Best Practices

Ensure water temperature is close to 4°C when using foot water measurements for accuracy.
Use this tool for low-pressure differential measurements rather than high-pressure contexts.
Calibrate instruments properly before converting values for sensitive laboratory or diagnostic work.
Refer to standard conversion examples to validate your results.
Combine converted pressures with sensor data reported in SI units for comprehensive analysis.

Limitations

Foot water unit depends on pure water at exactly 4°C; deviations in temperature or purity affect pressure values.
Dekapascal is best suited for low-pressure differentials and is uncommon for measuring high pressures.
Accuracy requires precise knowledge of environmental and calibration conditions, especially in labs and diagnostics.

Frequently Asked Questions

What does a foot water (4°C) represent?: It is a pressure unit equal to the hydrostatic pressure from a 1-foot column of pure water at 4°C, used to express low pressure or hydraulic head.
Where is the dekapascal unit commonly used?: Dekapascal is used in audiology for middle-ear pressure, HVAC for small pressure differences, and laboratory calibration of low-pressure sensors.
Why is temperature important when using foot water units?: Because the unit is defined based on the density of water at 4°C, changes in temperature can alter water density and affect pressure values.

Key Terminology

Foot water (4°C) [ftAq]: A unit of pressure from the hydrostatic pressure of a 1-foot pure water column at 4°C, used in measuring low pressures and hydraulic head.
Dekapascal [daPa]: An SI-derived pressure unit equal to 10 pascals, used for small pressure differentials and mechanical stress measurements.
Hydrostatic Pressure: Pressure exerted by a fluid at equilibrium due to the force of gravity.

Quick Knowledge Check

What does 'foot water (4°C)' measure?

A column height of air pressure

Hydrostatic pressure of a 1-foot water column at 4°C

Electrical pressure in circuits

What is one common use of the dekapascal unit?

Measuring high-pressure gas cylinders

Audiology middle-ear pressure measurements

Measuring temperature changes

Why must the water be at 4°C for foot water measurements?

Because water boils at 4°C

Density of water at 4°C is the reference for pressure calculations

Because 4°C is room temperature

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