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Measurement Reading to 4-20mA Signal Converter

Measurement Input Parameters
Unit [?]
Reading [?]
Low Limit [?]
High Limit [?]
Current Loop Signal (4-20mA)
Output Reading (mA) [?]

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✕ clear settings

Invert the low & high range limits for the measurement input settings



Flip tool with current settings to swap measurement input (I) with 4-20mA output parameters

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Contents

  • Related Tools
  • User Guide
    • Formula
    • Parameters
      • Measurement Unit
      • Measurement Reading
      • Lowest Measurement
      • Highest Measurement
      • Current Loop Signal (4-20mA) – Answer
  • Help
    • Calculator precision
    • Measurement types
    • Input & Output
    • Bidirectional measurements
    • Compound ranges
    • Elevated zero point
    • Measurement accuracy checking
    • 0-30,000 psi conversion
    • 0 bar over -1 to 3.5 bar conversion

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User Guide

This measurement to current converter tool will convert any linear measurement reading into the ideal current loop signal over a linear range of 4 to 20 milliamps, and display a 4-20mA conversion scale for the chosen measurement range.

Formula

This tool uses the following formula to calculate the current output signal over a 4-20mA scale from a specified measurement input reading and range:

Linear mA out = 4 + (16 x ((Rdg – Low Limit) / (High Limit – Low Limit)))

Parameters

Measurement Unit

Add the measurement parameter value in the specified measurement unit you wish to convert.

Measurement Reading

Add the measurement parameter value you wish to convert in any units.

Lowest Measurement

Enter the lower limit for the measurement range to be converted. For example zero would be a typical value for most instrumentation but you can also add negative (-) or positive (+) values as well. Please enter the value in the same units as specified for all other input values.

Highest Measurement

Enter the upper limit for the measurement range to be converted, e.g. full scale or full range. This value can be negative (-) or positive (+). Please enter the value in the same units as specified for all other input values.

Current Loop Signal (4-20mA) – Answer

This is the ideal converted signal for the input measurement range specified, and represents the ideal output reading excluding all measurement and instrumentation errors.  The calculated result is displayed in milliamps (mA) based on a linear 4 to 20 mA scaling.

Help

Calculator precision

How precise is the calculation from measurement to linear 4-20mA output?

The linear 4 to 20 milliamp signal Answer is displayed to a precision of 9 significant figures.

Measurement types

What type of measurement can I convert?

Any measurement which is linearly proportional to the 4-20mA signal can be converted, such as pressure, temperature, force, load, weight, position, movement, speed, rpm, depth, level, etc…

Input & Output

Does it matter if the measurement is an input or a output?

No it does not matter if the measurement, the calculation is the same whether it is an input or an output.

Bidirectional measurements

Can I convert a bidirectional measurement?

Yes, you can enter the lowest measurement as a negative value by prefixing it with a minus (-) sign.

Compound ranges

Can I enter a compound range?

Yes, any negative range can be specified in the Lowest text box can be combine with any positive range specified in the Highest text box.

Elevated zero point

Is it possible to convert a measurement range where the lowest value is offset in positive direction from zero?

Yes, the lowest measurement point can start from any value above zero.

Measurement accuracy checking

Can this converter help to determine the accuracy of measurement instrument?

Yes, this converter will calculate the ideal 4-20mA signal so that you can compare it to an observed 4-20mA reading.

0-30,000 psi conversion

What are the 4-20mA readings for a 0-30,000 psi range?

This conversion scale shows the pressure values against discreet milliamp values:

0 to 30000 psi to 4-20mA Conversion Scale

0 bar over -1 to 3.5 bar conversion

If a transmitter range is -1 to 3.5 bar, then what will be the mA reading at 0 bar?

At 0 bar it will be 7.5 mA for a linear 4-20mA output signal.

Minus 1-3pt5 to lin 4-20mA conversion

Primary Sidebar

Tool Sections

  • Density
  • Flow
  • Energy & Power
  • Force, Load & Torque
  • Input & Output Signals
  • Length, Area & Volume
  • Liquid Depth & Level
  • Mass & Weight
  • Pressure
  • Speed & Acceleration
  • Temperature
  • Time & Frequency

Product Selection Guides

  • Pressure Transmitters
  • Pressure Transducers
  • Liquid Level Sensors
  • Hydrostatic Liquid Level Sensors
  • Digital Pressure Sensors
  • Digital Pressure Gauges
  • Differential Pressure Sensors

Application Selection Guides

  • Vacuum
  • Submersible
  • Oxygen Service
  • Flush Diaphragm
  • Dual Temperature and Pressure
  • Differential Pressure

Help Guides

  • What is the difference between gauge and absolute pressure measurement
  • Using Hydrostatic Pressure Transducers for Measuring Fluid Level
  • Using absolute pressure sensors to measure hydrostatic level
  • Measuring vacuum with negative gauge or absolute ranges
  • Measuring the difference in air pressure between rooms
  • Measuring liquid level in a sealed tank with a hydrostatic pressure sensor
  • How do you measure flow rate with a dp cell
  • Determining water tank volume using hydrostatic pressure
  • ATEX Classifications Glossary for products used in Explosive Atmospheres

Online Measurement Tools

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  • Measurement Reading to 4-20mA Signal Converter
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  • Liquid Depth/Level to Hydrostatic Pressure Calculator
  • Input to Output Measurement Reading Converter
  • Horizontal Cylindrical Shaped Tank Contents Calculator
  • Force & Area to Pressure Calculator
  • Density to Specific Gravity Calculator
  • Calibration Error Calculator
  • 4-20mA Signal to Measurement Reading Converter

Product Enquiry

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enquiries@sensorsone.com

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