Four performance metrics for Laboratory Electronic Balance
 Aug 17, 2022|View:135

When we use Laboratory Electronic Balance, the first thing we consider is the stability of the Balance, the sensitivity of the Balance, the correctness of the Balance, and the invariance of the value of the Balance. The so-called stability refers to the Balance accuracy stability, and sensitivity refers to the Balance reading response speed, in this regard, Laboratory Electronic Balance has higher sensitivity than the mechanical Balance; Accuracy refers to the accuracy of its readings; and invariance refers to the stability of the balance readings, that is, the floating range of the balance readings, the smaller the floating range, indicating that its invariance is better.

Laboratory Electronic Balance

Invariance of Laboratory Electronic Balance indication:

The invariance of Laboratory Electronic Balance indicates the consistency of the results obtained from repeated measurements of the same object under the same conditions. For Laboratory Electronic Balance, there is still the invariance of the indication value of the Balance, such as the control of repeatability and reproducibility, the control of zero position and return an error of Laboratory Electronic Balance, and the control of no-load or loading of Laboratory Electronic Balance, laboratory Electronic Balance control of indication drift for Laboratory Electronic Balance at specified times.

Correctness of Laboratory Electronic Balance:

The correctness of Laboratory Electronic Balance is the correctness of the Balance indication, which indicates the ability of the Balance indication to approach the true value, and from the angle of error, the correctness of the Balance is the degree of the systematic error of the Balance indication.

Laboratory Electronic Balance sensitivity:

The sensitivity of the Laboratory Electronic Balance is the Balance's ability to detect changes in the mass of an object placed on a Balance plate. The sensitivity of Laboratory Electronic Balance can be expressed as angular sensitivity, line sensitivity, graduation sensitivity, or digital (graduation) sensitivity. For Laboratory Electronic Balance, it is mainly expressed in terms of graduated sensitivity, or digital sensitivity. The smaller the change in mass detected by the Balance, the more sensitive the Balance will be tomorrow. Therefore, for Laboratory Electronic Balance, the sensitivity of the Balance is still one of the important performances to judge the Balance.

Laboratory Electronic Balance stability:

The stability of Laboratory Electronic Balance is the ability of balances to automatically return to their initial equilibrium position after being perturbed. For Laboratory Electronic Balance, the position of Balance is always represented by the indication of analog or digital indication, so once a momentary disturbance is applied to the Laboratory Electronic Balance, even if the indication is changed after the interference is eliminated, the Balance can be restored to its original value, so the Laboratory Electronic Balance is said to be stable. For a Laboratory Electronic Balance, the stability of the Balance is the first criterion for the Balance to be used, and the Laboratory Electronic Balance without the Balance stability can not be used at all.

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