How to do 4-20mA Conversions Easily
Generally it is possible to generate a “custom” linear equation in the form of y = mx + b for any linear
Formulas
4-20mA Formulas and Examples
4-20 mA transmitter current output can be converted to the voltage within a specified range, from 0 to a maximal amplitude Vmax,
PLC Analog Input Conversion Formula
For any unit conversion on any PLC, you can use four function math with the following for PLC Analog Input
Scaling Sensor Output to Engineering Units
Sensor Scaling – Converting Current and Voltage Inputs To Engineering Units Such As psi, Deg C, m3/hr etc… Sensor Scaling
Linear to Square Root Extraction
Some pressure measurements are used to indirectly derive another type of measurand. One of these is the Rate of Flow
Calculate Temperature Coefficient of RTD
RTD’s are based on the principle that the resistance of a metal increases with temperature. The temperature coefficient of resistance (TCR)
Relationship between Temperature Scales
Relationship between Temperature Scales Relationship between Fahrenheit and Celsius To determine the relationship between Fahrenheit and Celsius, we could draw
Formula to Calculate 3-15psi from 4-20mA Current
The amount of psi can also be calculated from the amount of the milliamp signal, or one can calculate the amount of the milliamp
Formulas to calculate mA from PV, LRV and URV
The formula for calculating equivalent current (ma) from known process variable (PV), Lower range value (LRV) and Upper range value
