What Is This Tool?
This converter transforms pressure measurements from ton-force (long)/square inch, a traditional British imperial unit, into millimeter water (4°C), a metric unit representing very low pressures. It's designed to help users update legacy data and work with fine-scale pressure readings in modern contexts.
How to Use This Tool?
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Enter the pressure value in ton-force (long)/square inch
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Select ton-force (long)/square inch as the source unit
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Choose millimeter water (4°C) as the target unit
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Submit to view the converted pressure value immediately
Key Features
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Converts pressure from ton-force (long)/square inch to millimeter water (4°C)
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Supports translation of legacy British imperial units into precise metric pressure units
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Useful for heavy machinery, engineering research, and low-pressure sensor calibration
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Browser-based and easy to use with quick conversion results
Examples
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1 ton-force (long)/square inch equals 1,574,919.22 millimeter water (4°C)
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0.5 ton-force (long)/square inch equals 787,459.61 millimeter water (4°C)
Common Use Cases
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Translating historical British engineering pressure values into metric units
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Calibrating low-range pressure sensors used in HVAC and cleanroom environments
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Updating technical documentation for heavy machinery and industrial equipment
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Measuring small pressure drops in plumbing or filtration systems
Tips & Best Practices
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Verify units carefully since ton-force (long)/square inch is a legacy measurement
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Use this tool to integrate old imperial data with current metric pressure readings
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Account for environmental factors when interpreting results based on water density at 4 °C
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Apply the conversion for low-pressure measurement calibrations and accurate documentation
Limitations
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Ton-force (long)/square inch is rarely used in modern practice and may cause confusion
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Millimeter water (4°C) is suited for very low pressures and not for expressing extremely high pressures directly
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Conversion accuracy depends on assumptions of standard gravity and pure water at 4 °C
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Environmental or temperature changes can impact conversion precision in practical scenarios
Frequently Asked Questions
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What does ton-force (long)/square inch measure?
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It measures pressure as the weight (force) of one long ton distributed over one square inch of area, commonly used in legacy British engineering.
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Why convert ton-force (long)/square inch to millimeter water (4°C)?
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To translate old imperial pressure units into very small metric pressure units for modern low-pressure measurements and calibrations.
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Can this tool handle high pressure values accurately?
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Millimeter water (4°C) measures very low pressures, so using it to express extremely high pressures results in very large numbers or the need for scientific notation.
Key Terminology
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Ton-force (long)/square inch
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A pressure unit representing the force of one long ton distributed over one square inch, used historically in British imperial engineering.
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Millimeter water (4°C)
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A metric unit indicating the hydrostatic pressure from a 1 mm column of pure water at 4 °C under standard gravity, used for measuring very low pressures.