Under Pressure

According to the SPE Metric Standard, the unit of pressure is the pascal, which is defined as one newton per square meter. “Use of the bar is discouraged by the standards organizations,” according to this standard.

One of the excellent recommendations in this document is to distinguish between absolute pressure (relative to vacuum) and gauge pressure
(relative to atmospheric pressure). This is frequently done when using customary units of pressure, such as psia and psig, but this is not done consistently when using metric units like kilopascals (kPa).

Here are some units of measure that “are to be avoided or abandoned,” according to the SPE Metric Standard:
•       angstrom
•       atmosphere
•       calorie
•       candle
•       dyne
•       gauss
•       horsepower
•       mho
•       micron
•       mm Hg
•       stokes

—————————————–

Profound Quote of the Day:
“Words differently arranged have a different meaning, and meanings differently arranged have different effects.”
– Blaise Pascal, French philosopher and scientist, 1623-1662

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: