pressure gauge

(10.2-10)/(40-0) = ?

(20-19.8)/(40-0)=?

(30.1-30)/(40-0)=?

(40.1-40.0)/(40-0)=?

Which is the largest?

Resolution on the gauge is only 0.1/40!

your comment is wrong. how did you calculated that you know .....!!!!

Actual = 10 and measured= 10.2

Error = 0.2 and % error = 0.5

Every thing is ok. you have to take in both way rising and falling.

% error must be within +/-1 or in some cases +/- 2 ( depends on client)

your gauge is ok...

sudip

It's not my gauge. It's the other Guest's gauge.

What is the zero value?

Depending on the accuracy of the gauge the tollerance could be between 0.1% and 2%

Do the readings duplicate on increasing pressure, referenced to decreasing pressure?

The percent of error is usually expressed as

(the greatest error divided by the actual value -1x100)

10.2/10= 1.02-1= .02 x 100=2%

19.8/20= 0.99-1= -0.01 x 100=-1%

Therfore 2% is the percent of error

Probably the linearity adjustment could be used to improve the calibration significantly

You can probably recalabrate the gauge using the zero adjustment to correct the reading at the point of most intrest. (Splitting the error)

% ERROR is Error divided by span multiplied by 100

what you explained totaly wrong

the performance of the gauge is ok