จำหน่ายเกจวัดแรงดัน Pressure Gauge ทุกยี่ห้อ

ศูนย์รวมเครื่องมือวัดความดัน

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 complete 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 เพรสเชอร์เกจ is not possible. With a 3 1/2-digit digital indicator, the indicatable range of values is thus significantly limited in comparison to a 4-digit indicator.
Thus, on the main one hand, the maximum of the indicatable range of values is 1999 instead of 9999. However, no negative values can be indicated, since the minus sign can’t be displayed in the initial position. Therefore, the minimum of the indicatable selection 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. number of positions after decimal point
2
3
3
Note
More info about digital indicators from WIKA are available on our website.
See also our article
Characteristics of the display of an electronic indicator ? there you will find general information on the most important characteristic features of the display of a digital indicator.