The Knudsen gauge operates within the absolute pressure range of 10⁻⁸ to 10⁻³ torr.
Understanding the Knudsen Gauge's Pressure Range
The Knudsen gauge is a specialized instrument primarily used for measuring very low absolute pressures in vacuum systems. Its operational range makes it suitable for applications requiring precise measurements in the high vacuum to ultra-high vacuum regimes.
This innovative gauge, invented by Martin Knudsen, utilizes the principle of molecular momentum transfer in rarefied gases. The specific pressure range it covers highlights its utility in environments where standard pressure gauges might not be sensitive enough or accurate.
Key Pressure Specifications
To illustrate the Knudsen gauge's working range, consider the following breakdown:
| Characteristic | Value | Unit |
|---|---|---|
| Minimum Pressure | 10⁻⁸ | torr |
| Maximum Pressure | 10⁻³ | torr |
| Pressure Type | Absolute | N/A |
This distinct range is crucial for various scientific and industrial processes, particularly those sensitive to subtle changes in vacuum levels.
