HAND-ARM:
Whole Body Panel
1 - 80 Hz range
AXIS SELECTOR:
LIMIT SELECTOR PUSHKEYS:
A set
of
five push-keys
for
selecting Hand-Arm frequency weighting filters
and time weighting functions
for
Hand-Arm measurements. Pressing any
of
these five pushkeys selects the Hand-Arm filters, whereas each individual
push key (labelled
"x
1
",
"x2", "x3",
"x4",
"x5")
corresponds to a certain
proportion
of
interruption
of
exposure time during the working day. Each
pushkey has a built-in LED to indicate that it has been selected.
Two groups
of
pushkeys; the upper group concerned with the ISO stan-
dardized frequency range from 1
to
80
Hz,
the lower one concerned with the_
frequency range from
0,
1 to 0,63
Hz,
which is most relevent to the predic-
tion
of
motion sickness.
Two-position slider switch to select one
of
the two different frequency
weightings which apply to the vertical and horizontal directions when mea-
suring in the whole body mode, 1 to
80
Hz.
The right (Z) position connects the frequency weighting filters aplicable to
vertical motion, and the left
(X,
Y)
position connects the frequency weighting
filters applicable
to
horizontal motion.
When
"Z"
is selected, one
of
the three LEDs to the right
of
the selected
LIMIT SELECT
OR
pushkeys lights. If
"X
Y"
is selected, the LED in the
corresponding pushkey itself lights.
A group
of
three pushkeys for selecting the whole body exposure criterion
to be used for exposure calculations by the instrument. These criteria are in
accordance with the relevant ISO Standard, ISO 2631, Guide
for
the evalua-
tion
of
human exposure to whole-body vibration.
The three selectable criteria are:
"Reduced Comfort" - Applicable to, for example, the difficulties associat-
ed with reading and writing in a vehicle.
"Fat. Deer. Proficiency" - Fatigue Decreased Proficiency, applicable to
task performance.
"Exposure Limit" - A level which should not be exceeded; the exceedance
of
which could cause permanent damage to health if the exposure were
continued throughout the working lifetime.
0,
1 - 0,63 Hz MOTION SICKNESS
Z-AXIS
range
LIMIT SELECTOR PUSHKEYS:
1 2
Two pushkeys with integral LED indicators, for selecting the required
exposure criterion. Only a
Z-axis
weighting is available in this mode
of
operation. The two selectable criteria are:
"Severe Discomfort" as described
in
"Draft
Addendum ISO 2631/DAD2"
"Reduced Comfort" as described in earlier drafts
of
this standard.
To Next Page
Loading...
