vacuum gauge
Definition
- Noun:
- An instrument for measuring pressure below atmospheric pressure: A "vacuum gauge" is a device that measures the degree of vacuum, or the negative pressure, in a sealed system relative to the surrounding atmospheric pressure.
Usage Examples
- Noun:
- The technician used a vacuum gauge to check the pressure inside the refrigeration system.
- A reading on the vacuum gauge confirmed that the chamber had been successfully evacuated.
Advanced Usage
- "to read a vacuum gauge": to interpret the measurement shown on the instrument.
- The engineer knew how to read the vacuum gauge accurately to assess the system's integrity.
Variants and Related Words
- Vacuum meter (n): A synonym for vacuum gauge.
- The laboratory's equipment included a highly sensitive vacuum meter.
- Manometer (n): A more general instrument for measuring pressure, which can be designed to measure vacuum (negative pressure) as well as positive pressure.
- A U-tube manometer can function as a simple vacuum gauge.
Synonyms
- Pressure gauge (for vacuum): A gauge specifically designed for sub-atmospheric pressure measurement.
- Vacuum indicator: A device that shows the state of vacuum.
Related Phrases
- "under vacuum": a state of negative pressure, often monitored by a vacuum gauge.
- The sample was stored under vacuum to prevent degradation.
Noun
-
a gauge for indicating negative atmospheric pressure
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