PCE Instruments PCE-VT 3700 Bedienungsanleitung Seite 27

5.1.3 ISO evaluation
In order to enable the automatic evaluation of the current measurement value according to the
ISO standard 10816-3, the measuring unit vibration acceleration or vibration velocity in
conjunction with the parameter RMS need to be selected. This is necessary since the ISO
standard only lists valid vibration severity thresholds for these two combinations. After the correct
measurement options were set, the appropriate option for the machine to be measured (group 1
or 2, rigid or flexible mounting) can be selected in this sub menu.
When this function is enabled, the name of the enabled group is displayed at the bottom of the
main screen together with four color coded items which represent the four vibration severity
zones. The current measurement value shown on the screen is compared against the thresholds
described in the ISO standard and is automatically color coded according to the thresholds.
Additionally, the item which represents the current zone flashes periodically so the vibration
severity can be quickly determined.
If the automatic evaluation is currently enabled and an incompatible measuring unit (acceleration)
or parameter (peak, peak-peak, crest factor) is activated, the evaluation function is automatically
disabled and a corresponding hint is displayed on the screen.
Fig. 7 Hint ISO evaluation disabled
As described previously the automatic evaluation function requires the measuring unit velocity or
displacement in conjunction with the parameter RMS. Otherwise the menu to enable this function
cannot be opened and the following hint is displayed on the screen.
Fig. 8 Hint for activation of ISO evaluation
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