3 1/2- vs. 4-digit digital indicator ? What is a 1/2 digit?

Besides 3- and 4-digit digital indicators, there are also 3 1/2-digit indicators available for sale. But what is a 1/2 digit?
A full digit can indicate all numbers from ?0? to ?9?. A 1/2 digit, in contrast, can only display a ?1?, a number ?2? or higher is not possible. With a 3 1/2-digit digital indicator, the indicatable range of values is thus significantly limited in comparison with a 4-digit indicator.
Thus, on the one hand, the maximum of the indicatable range of values is only 1999 rather than 9999. On pressure gauge 10 bar , no negative values can be indicated, since the minus sign cannot be displayed in the first position. Therefore, the minimum of the indicatable range of values is 0 instead of -1999.
An exception to the limitation of the indicatable negative value range is represented by indicators that have a separate space for the display of the sign. Displays with this particular characteristic can therefore also indicate values right down to -1999.
Number of digits
3-digit indicator
3 1/2-digit indicator
4-digit indicator
Max. scale range, standard
Max. scale range with separate sign
Max. number of positions after decimal point
More info about digital indicators from WIKA can be found on our website.
See also our article
Characteristics of the display of a digital indicator ? there you will discover general information on the most important characteristic top features of the display of a digital indicator.

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