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© 2012 by Proceq SA
4.9.3
Measuring with the Wheel Electrode
As described in 4.9.2, begin at the location corresponding to the top left hand corner of the screen
and move in the direction indicated or alter this accordingly.
•
Press the START button to acquire the first reading.
•
Now proceed to move the wheel electrode in the Y-direction (down) as indicated by the direction
arrow (Field 2 in fig 4.1). The measurement readings will be acquired automatically in the pre-
selected row spacing.
•
When you come to the end of a column, press the
→
button to indicate this and the cursor will
jump right to the next column. The direction arrow will automatically change direction to
↑
.
•
Now place the wheel physically one column spacing to the right and acquire the first measure-
ment by pressing the START button. Proceed to measure back along the Y-axis (up) as indicated
by the direction arrow.
•
When you come to the end of the measurement surface, (the X-axis) the cursor will automatically
jump to the next column and the direction arrow will change back to
↓
.
•
Following each manual or automatic change in the direction arrow, the path measurement and
the automatic acquisition of the potential reading is halted.
•
These breaks in the measurement process can be used for example to refill the water compart-
ment. Automatic measurement begins again when the START button is pressed.
•
During such breaks, the measured value is shown in the status row. (Field 3 in Fig 4.1)
•
The maximum speed of travel should not exceed a maximum of 1m/sec.
•
Measurements along the X-axis cannot be acquired. (Objects may be rotated later in ProVista)
i
Note:
The nozzle (Ø 1 mm) is fit as standard. On dry surfaces, the felt hoop should
leave a clearly visible trace as you measure. Depending on the character of the
concrete it may be necessary to increase to one of the larger nozzle diameters (Ø
2 or 3 mm).
i
Note:
On dry, vertical surfaces, measurements should be made downwards as this
ensures an even moistening of the surface.
4.9.4
Re-opening an object
An object can be re-opened and missing measurements can be entered or suspect measurements
can be overwritten. However the following points should be observed.
Once an object has been closed and a new object has been opened, it is no longer possible to add
pages to a previously opened object.
If you have worked out the size of the area assigned to an object (see 4.1), it is possible to reserve
the number of pages you will require in the case that you are not able to complete the measurement
in one go.
A page is reserved once it has appeared on the screen. In order to reserve the necessary pages,
simply move the cursor to each page you will require. For a better orientation it may help to place an
“X” (see Note in 4.9.2) somewhere on the page (but not in the top left hand corner).
The last object that was opened can be re-opened and extended at any time.
4.9.5
Overwriting or deleting readings
Existing readings can be overwritten by moving the cursor to the appropriate point and making a
new reading with the electrode. Once the reading has registered, the cursor will move to the next
measuring point along the axis indicated by the direction arrow.
To delete an existing reading, move the cursor to the point you wish to delete and press PRINT for
two seconds. Once the reading has been deleted, the cursor will move to the next measuring point
along the axis indicated by the direction arrow.
