Enter the measured output voltage (volts), the module gain (V/V), and the full scale range (volts) into the calculator to determine the Thermocouple Input Voltage. 

Thermocouple Input Voltage Formula

The following formula is used to calculate the Thermocouple Input Voltage.

Vt = Vo / G + FSR

  • Where Vt is the Thermocouple Input Voltage (volts)
  • Vo is the measured output voltage (volts) 
  • G is the module gain (V/V) 
  • GSR is the full scale range (volts) 

How to Calculate Thermocouple Input Voltage?

The following example problems outline how to calculate Thermocouple Input Voltage.

Example Problem #1

  1. First, determine the measured output voltage (volts). In this example, the measured output voltage (volts) is determined to be 120 .
  2. Next, determine the module gain (V/V). For this problem, the module gain (V/V) is measured to be 52 .
  3. Next, determine the full scale range (volts). In this case, the full scale range (volts) is found to be .003.
  4. Finally, calculate the Thermocouple Input Voltage using the formula above: 

Vt = Vo / G + FSR

Inserting the values from above and solving yields: 

Vt = 120 / 52 + .003 = 2.31 (volts)

Example Problem #2

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

measured output voltage (volts) = 152

module gain (V/V) = 23

full scale range (volts) = -.01235

Enter these given values into the calculator or above yields: 

Vt = 152 / 23 – .01235 = 6.5963 (volts)