In the field of instrumentation, there are technical parameters that may seem similar at first glance but actually represent distinct characteristics. Today, let’s delve into the differences and connections between two such parameters: sensitivity and precision in instruments.
Sensitivity of Instruments:
Sensitivity refers to an instrument’s ability to measure the smallest detectable quantity. The smaller the quantity that can be measured, the higher the sensitivity of the instrument. However, it’s essential to note that higher sensitivity does not always equate to better performance. When sensitivity is too high, the stability of the measurement can be compromised, making it more difficult to obtain accurate results. Therefore, while ensuring the accuracy of measurements, excessive sensitivity should be avoided.
Precision of Instruments:
Precision, also known as accuracy, typically refers to the smallest division value of the instrument. The smaller the division value, the higher the precision, and in turn, the higher the sensitivity. For instance, a temperature transmitter with a minimum division of 0.1°C is more sensitive and precise than one with a minimum division of 0.2°C.