VTUSD2_v3
VELLEMAN
2
Notes:
•
The measurement remains on the display for ± 4 minutes.
•
ERROR
is displayed when you are trying to measure a distance longer than 60ft or a distance that falls outside
the limits of the selected range.
7. Measuring Tips
•
Some types of curtains or blinds absorb sound waves and this will affect the accuracy of your measurements.
Open the curtains before measuring the distance to a curtained window and make sure that the window is closed
before you start your measurement.
•
No objects should obstruct the path between the
VTUSD2
and the target object. Sound waves bouncing off
chairs, tables, etc. may cause false readings. Repeat your measurement if you doubt its accuracy.
•
A wall with an uneven surface or a narrow corridor may produce false readings. Find an even stretch of wall or
move to the centre of the corridor.
•
When placing the
LD/NORMAL/OFF
switch in the
LD
position: make sure there are no objects within 8.2ft (2.5m)
of the device to avoid false readings.
•
You may want to measure distances > 60ft (18.288m). Select a point in the middle of the room, measure the
distance to both sides and add up the two measurements for your final result.
8. Saving a Measurement
a. Perform a measurement (see “
Measurements
” on the previous page).
b. Press
STORE
and then one of the memory keys (
M1
,
M2
or
M3
). The selected memory slot is displayed on the
left-hand side of the screen and the measurement has now been stored.
c. You can repeat this process until all three memory locations are used.
d. Press the
M1
key to display the measurement stored in that memory location. You can also do the same with
keys
M2
and
M3
.
You can delete a measurement by putting a new one its place. Deactivate the device or hold the
ALL MEMORY
CLEAR
button for three seconds if you want to erase all stored measurements. The used memory locations are
erased from the screen (“
M1
” and/or “
M2
” and/or “
M3
”).
9. Calculating Volume
Measure the length, width and height of a room and stores each of these three measurements in a different memory
location (see “
Saving a Measurement
”). Press the
VOL
button to calculate the volume. Press the
FEET/METER
button to display the volume in ft or m.
10. Calculating Area
Measure the length and width of a room and store the measurements under
M1
and
M2
(see “
Saving a
Measurement
”). Press
AREA
,
M1
,
M2
and then
FEET/METER
to display the result. Press
FEET/METER
to
alternate between m² and ft².
11. Adding & Subtracting Stored Measurements
a. Measure any two dimensions of a room and store the measurements under
M1
and
M2
.
b. Press
ALL MEMORY CLEAR
.
c. Press
M1, +, M2, +
to add the measurements or
M1, -, M2, +
to subtract them. The result will be displayed.
d. Press
ALL MEMORY CLEAR
to clear the display and perform a new measurement.
