Gage factor意思

"Gage factor" is a term used in the context of pressure measurement, specifically with respect to bourdon tubes, which are used in pressure gauges and sensors. The gage factor is a dimensionless number that describes the sensitivity of a bourdon tube to pressure changes.

A bourdon tube is a curved hollow tube that straightens when pressure is applied to it, causing the tube to increase in length and change its shape. The gage factor is the ratio of the change in length of the bourdon tube to the change in pressure applied to it. Mathematically, it is represented as:

Gage factor (GF) = (\frac{\Delta L}{L_0} \div \frac{\Delta P}{P_0})

where:

• (\Delta L) is the change in length of the bourdon tube
• (L_0) is the original length of the bourdon tube
• (\Delta P) is the change in pressure applied to the bourdon tube
• (P_0) is the original pressure applied to the bourdon tube

The gage factor is a constant for a particular bourdon tube design and is used to convert the mechanical displacement of the tube into a measurement of pressure. It is typically expressed as a percentage or a decimal value.