A Macleod Gauge Manometer is a highly precise vacuum measurement instrument designed for measuring extremely low pressures and high vacuum levels. It operates on the principle of Boyle’s Law, where a known volume of gas is compressed, and the resulting pressure increase is used to determine the original vacuum pressure.
Unlike conventional pressure measuring instruments, the Macleod Gauge provides highly accurate and direct measurement of absolute pressure in vacuum systems. It is widely used as a calibration standard in laboratories, research institutions, vacuum technology applications, and scientific experiments where precise low-pressure measurement is essential.
The instrument consists of a glass bulb connected to a capillary tube and a mercury reservoir. By raising the mercury level, the trapped gas is compressed into a calibrated capillary, allowing the pressure to be calculated accurately. Due to its exceptional accuracy, the Macleod Gauge is often used as a reference instrument for calibrating other vacuum gauges.
Applications of Macleod Gauge Manometer
- Vacuum Laboratories
- Scientific Research Facilities
- Calibration Laboratories
- Vacuum System Testing
- Educational Institutions
- Physics and Chemistry Laboratories
- Industrial Vacuum Processes
- Instrument Calibration Applications
Features of Macleod Gauge Manometer
- High-accuracy measurement of very low pressures
- Operates on Boyle’s Law principle
- Ideal for high-vacuum applications
- No electrical power required
- Excellent repeatability and reliability
- Suitable as a calibration standard
- Durable glass construction
- Simple and proven operating principle
Available Options
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Standard Laboratory Models
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Precision Calibration Models
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Customized Capillary Configurations
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Protective Mounting Frames
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Calibration Certification
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Research-Grade Designs
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Customized Measuring Ranges
Specifications
| Parameter | Details |
|---|---|
| Product Name | Macleod Gauge Manometer |
| Measuring Principle | Boyle's Law (Gas Compression Method) |
| Measurement Type | Absolute Pressure Measurement |
| Pressure Range | 0.001 mmHg to 10 mmHg (Approx.) |
| Accuracy | High Precision Laboratory Grade |
| Construction Material | Borosilicate Glass |
| Measuring Fluid | Mercury |
| Scale Type | Graduated Capillary Scale |
| Power Requirement | Not Required |
| Operating Medium | Non-Condensable Gases |
| Mounting Type | Laboratory Bench Mounted |
| Temperature Influence | Minimal under Controlled Conditions |
| Calibration | Suitable as Reference Standard |
| Reading Method | Manual Visual Reading |
| Application Area | High Vacuum Measurement |
Benefits
Macleod Gauge Manometers offer one of the most accurate methods for measuring very low pressures and high vacuum levels. Their direct measurement principle eliminates many of the errors associated with electronic vacuum sensors, making them ideal for calibration and scientific applications. With exceptional accuracy, long-term stability, and no dependence on electrical power, Macleod Gauges remain a trusted solution for precision vacuum measurement in laboratories and research environments.
Note
Macleod Gauges are best suited for measuring dry, non-condensable gases and are generally used as laboratory or calibration instruments rather than for continuous industrial process monitoring.