Formula for Percentage to Process Variable Conversion

Calculating the equivalent Process Variable for any given percentage of signal

Formula for Percentage to Process Variable Conversion

Formula for Percentage to Process Variable Conversion

You can use our Instrumentation tool for converting Percentage to Process Variable. Click here.

Formula:

Process Variable = Span(X/100) +LRV

Span = (URV) - (LRV)

Where
X is Percentage of signal
URV is Upper Range of value
LRV is Lower range of value

Example: 

A pressure gauge is ranged -1 to 1 bar; calculate the Measured Variable for 40 % of signal

Span = (URV) - (LRV)
         = 2 Bar

Process Variable    = Span(X/100) +LRV
                              = (2)(40/100)+(-1)
                              = -0.2 Bar

Also Read,

Calculate Current (4-20ma) from Process variable PV

Convert current (4-20)ma to Percentage (0-100)%

Convert Percentage (0-100)% to current (4-20)ma