The article summarizes the numbers and give you a step by step guide to a temperature transmitter calculation.

Temperature transmitter calculation

Transmitter range: 0 – 100°C
Output range: 4-20 mA
Accuracy: ±0.5%

Now the output is 13.6 mA, and you want the process values, right? So here we go.

  • PV – LRV / SPAN = mA – LRV/SPAN
  • PV – 0/100 = 13.6 – 4/16
  • PV – 0/100 = 0.6
  • PV – 0 = 0.6 x 100

And finally, PV = 60°C!

  • LRV = Low range value
  • SPAN =  Device range from minimum to maximum
  • PV = Process value

So based on the 60 degrees Celsius, we can consider the accuracy ±0.5 percent. We should keep in mind that to calculate accuracy, we have to consider a lot of details, such as the resolution, sensitivity, gain error, linearity error, and more.

To know more about temperature transmitters, you can read the Visaya Article on

 

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