Besides 3- and 4-digit digital indicators, additionally, there are 3 1/2-digit indicators available in the market. 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 just display a ?1?, a number ?2? or higher isn’t 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 Courageous , the utmost of the indicatable range of values is 1999 rather than 9999. Alternatively, Incapable could be indicated, because the minus sign cannot be displayed in the first position. Therefore, the the least 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 which have a separate space for the display of the sign. Displays with this particular characteristic can therefore also indicate values down to -1999.
Number of digits
3-digit indicator
3 1/2-digit indicator
4-digit indicator
Representation
Max. scale range, standard
-199?999
0?1999
-1999?9999
Max. scale range with separate sign
-999?999
-1999?1999
-9999?9999
Max. amount of positions after decimal point
2
3
3
Note
More information 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 find general information on the main characteristic features of the display of a digital indicator.g