Explanation of the terms needs to be divided into two categories → sensitivity of hardware and sensitivity of the sensor.
The sensitivity of hardware represents the smallest possible step detected by the hardware. Usually, the sensitivity of the hardware is supposed to be higher than the sensitivity of the sensor, if not the response from the sensor will not be detected correctly.
The sensitivity of the sensor is when the outer/external condition evokes a change in the output of the sensor. The higher the change of the output at a certain given external condition, the higher the sensitivity of a sensor. Let’s have two sensors, A and B, and the temperature change of temperature (external condition) 10 °C. The response of sensor A will change by 10 mV, and the response from sensor B by 1 mV. According to the previous definition, sensor A is more sensitive than sensor B.
VZOREC
In the case of a thermocouple, the sensitivity will be given in mV per °C.