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6.3.3. Editing and Deleting Measurement Point Data
Open the main menu by pressing F3 and select the sub-menu “Point ID memory” by
using keys ▼▲.
Within the menu option “Edit Point ID”, as previously explained in section 6.3.2,
the measurement point texts and the operating mode allocated to the measuring
point can be changed. In the sub menu “Edit Point ID” press or hold down▼▲, un-
til the text you wish to edit is displayed and then press OK to edit.
Within the menu option “Erase Point ID”, measurement point data records, each
consisting of a VMID serial number, text and operational mode, can be deleted one
by one. In the subsequent menu “Erase Point ID”, press or hold down ▼▲, until
the record you wish to delete is shown, then press OK and confirm the warning by
pressing OK again(Figure 23).
In the same way, the entire measurement point data can be deleted as a whole by se -
lecting “Erase all Point IDs” in the “ID Menu”. The VM25 memory can store data
for a maximum of 1600 measurement points.
Note: Deleting measurement point data effects the display of saved measurements.
(chapter 6.6). Instead of the measurement point serial number and the measurement
point text being shown, “none” is displayed. The measurement point data records
can always be newly generated, as described in 6.3.2.
6.4. Saving Measurands
Pressing the ▼ key saves the currently displayed measurand. Independently of
whether RMS, peak or crest factor display has been selected, the VM25 always
saves the RMS and peak value. Furthermore the respective measurement point num-
ber (if known), the chosen display mode and the date and time are also saved.
Note: If the sensor locates a measurement point which has not yet been assigned a
text or operational mode (cf. Chapter 6.3.3), use the ▼ key to enter the text.
6.5. Graphical Trend Display
The purpose of measuring vibration according to ISO 10816 and ISO 13373 is as
follows; To make assessments concerning the operating condition of a machine
based on changes in its vibration behavior. To achieve this it is imperative, that mea-
surements are taken at regular time intervals, from the same points and under the
same conditions.
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Figure 23: Deleting an ID record