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
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 per cent. 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.
If you want to know more about temperature transmitter, please ask our engineers!