Centimetres of Water Gauge – cmWG
Accurate Definitions: Centimetres of Water Gauge (cmWG) is a unit of pressure measurement that quantifies the pressure exerted by a column of water with a height of one centimetre at standard gravity. This unit is widely used in various fields to measure low pressures, particularly in HVAC systems, medical applications, and industrial processes. The value in cmWG indicates the force applied by a column of water of that height.
Formula: The pressure in cmWG is directly proportional to the height of the water column: Pressure (cmWG)=Height of water column (cm)
Example: If a water column is 50 cm high, the pressure exerted at the base is 50 cmWG.
Related Term: Millimetres of Water Gauge (mmWG), Inches of Water Gauge (inWG), Pascal (Pa), Bar, Atmospheric Pressure (atm)
Technical Notes:
Formula: The pressure in cmWG is directly proportional to the height of the water column: Pressure (cmWG)=Height of water column (cm)
Example: If a water column is 50 cm high, the pressure exerted at the base is 50 cmWG.
Application in Different Industries:
- HVAC: Used to measure air duct pressures for optimal airflow control.
- Medical: Common in measuring blood pressure and in respiratory therapy devices.
- Industrial: Applied in liquid level monitoring and low-pressure measurements in tanks.
- Water Treatment: Utilized to monitor pressure in filtration systems.
Related Term: Millimetres of Water Gauge (mmWG), Inches of Water Gauge (inWG), Pascal (Pa), Bar, Atmospheric Pressure (atm)
Technical Notes:
- Units: 1 cmWG = 10 mmWG.
- Conversion: 1 cmWG = 98.0665 Pascal (Pa).
- Types: Includes static pressure (fluid at rest) and dynamic pressure (fluid in motion).
Conversion Table:
| Unit | Equivalent Value |
|---|---|
| 1 cmWG | 98.0665 Pa |
| 1 cmWG | 0.980665 mbar |
| 1 cmWG | 0.967841 inWG |
| 1 cmWG | 0.000967841 atm |
Related Terms
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