Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Standards
    • Basics
    • Formula
    • Erection & Commissioning
    • Process Fundamentals
    • Root Cause Analysis
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Search
  • Courses
  • PLC
  • Control Systems
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Reading: Formula for Process Variable to Percentage Conversion
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • PLC
  • Control Systems
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Standards
    • Basics
    • Formula
    • Erection & Commissioning
    • Process Fundamentals
    • Root Cause Analysis
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Formulas > Formula for Process Variable to Percentage Conversion

Formula for Process Variable to Percentage Conversion

Last updated: April 21, 2019 12:52 pm
Editorial Staff
Formulas
6 Comments
Share
1 Min Read
SHARE

Calculate the equivalent Percentage for any given Process variable. For conversion, we need transmitter Lower Range Value and Upper Range Value.

Contents
Process Variable to Percentage ConversionPercentage %  =   ((Process Variable – LRV)/Span)(100)

Process Variable to Percentage Conversion

Formula for Process Variable to Percentage Conversion

Formula:

Percentage %  =   ((Process Variable – LRV)/Span)(100)

Span = URV – LRV

Where

URV upper range value
LRV lower range value

Example: 

An electronic Pressure transmitter is ranged -1 to 5 Bar and has a 4-20 ma. Calculate the Percentage output by this transmitter if the measured Pressure is 1 Bar

Span = 5 – (-1) = 6

Percentage % = ((Process variable – LRV)/Span)(100)

Percentage % =((1-(-1))/6)(100)

Percentage % = 33.33 %

Articles You May Like :

Instrumentation documents

Instrumentation Calibration Mistakes

Transmitter Span and Zero

Pressure Transmitter Applications

Formulas to calculate ma from PV

Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Remote Seal Transmitters Ranging Calculation
Gas Flow Formulas
How to do 4-20mA Conversions Easily
Calculate Process Variable from 4-20mA using Fraction of Measurement
Turbine Flow Meter Coefficient and Scaling Factor
Formula for Percentage to Process Variable Conversion
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
6 Comments
  • Cameron White says:
    May 29, 2015 at 2:59 pm

    Thanks for sharing the formulas related to instrumentation.

    Reply
  • Shaju says:
    September 16, 2015 at 11:29 am

    Thanks for the information.

    Reply
  • Neeraj Sharma says:
    February 13, 2016 at 1:58 pm

    Thanks allot Sir

    Reply
  • mani says:
    May 11, 2016 at 7:01 am

    If conversion from MA to differential pressure any formula?????

    Reply
  • Hajee says:
    November 25, 2017 at 1:28 pm

    Its good

    Reply
  • Mohamed Razick says:
    April 16, 2018 at 3:19 pm

    thank you very much SIR

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Instrumentation Basics – Range Conversion Formula and Examples
Zero Suppression and Zero Elevation Calculations
Formulas to calculate mA from PV, LRV and URV
Open and Closed Tank Level Calculations
DP Transmitter Dry Leg & Wet Leg Calculations
Formula for Linear % to Square root % conversion
Example of 3-15 psi to 4-20mA Conversion
Calculate Control Valve Stem Position

Keep Learning

Scaling Sensor Output to Engineering Units

Scaling Sensor Output to Engineering Units

Formula for Linear mA to Square root mA conversion

Formula for 4-20mA from 3-15PSI

Formula to Calculate 3-15psi from 4-20mA Current

4-20mA Image

4-20mA Graphical Calculations

Elevated Span and Suppressed Span

DP Level Transmitter Elevation and Suppression Corrections

Field Transmitter Range Calculation

Transmitter Turndown Ratio, Set Span and Zero Span

Capillary Remote Seal Leave Measurement

Siemens Pressure Transmitter with Remote Seals Calculations

Temperature Transmitter Formula

Calculate Temperature Transmitter Output

Learn More

Schottky Diode Vs PN junction Diode

Difference between Schottky Diode and PN junction Diode

Single-Acting Air Compressor Cylinder

Reciprocating Compressors

Orifice Plate Sizing

Orifice Sizing Guidelines and Thumb Rules with Flowchart

Power Electronics Objective Questions

Choppers Test Questions

Encode and Decode Instructions

How to Use Encode and Decode Instructions in PLC ?

Compressor and Compressor valves Maintenance

Compressor & Compressor Valves Maintenance

Difference between RCCB and RCBO

Difference between RCCB and RCBO

Practical Control Systems Questions & Answers - 2

Practical Process Control System Questions & Answers – 2

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?