Chapter 3 – Taking Measurements
Making Measurement Settings
BB1224 – 11
31
Type 2239 B
Hand-Arm Vibration Functions User Manual
●
0.1 to 316 m/s
2
●
1 to 3100 m/s
2
The range you choose will depend on the measurement con-
ditions. It is important to select the measurement range so
that the instrument is sensitive enough to measure all relevant
vibrations, but not so sensitive that it overloads. Your meas-
urement will not be accurate if an overload occurs. See section
3.3.3 for more information about overloads.
To set the measurement range:
1.
If the instrument is measuring, then press
to stop it.
The Measurement Window must read
STOP
(as shown be-
low), not
RUN
.
2.
Check the current measurement range. It is shown at the
top of the Measurement Window. (In the example above,
the range is 0.1 to 316 m/s
2
).
3.
To toggle the range setting, press
.
4.
Use the quasi-analogue display to decide if you have set
the range correctly. If the display is blank most of the time
and never overloading, then use the lower range. If the
display ever becomes full and the value for the upper limit
of the measurement range changes to read “
OVL
”, then
vibration levels are overloading the instrument; select the
higher range.
Fig. 3.6 The display when measurement is stopped
STOP
00:05:41
Amp
17.9 m/ss
H Aeq
7.26 m/ss
.1
316
bb122411.book Page 31 Tuesday, December 11, 2001 2:34 PM