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Fluke 8024B - 4.41. Temperature Test; 4.43. Calibration Adjustments

Fluke 8024B
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8024B
4-41.
Temperature
Test
WARNING
DO
NOT
PERFORM
THIS
PROCEDURE
IF
THE
TIP
OF
THE
THEROMOCOUPLE
ACCESSORY
HAS
BEEN
EXPOSED
TO
TOXIC
MATERIALS.
INSTEAD
USE
THE
ALTERNATE
PROCEDURE
DESCRIBED
IN
THE
FOLLOWING
CALIBRATION
ADJUSTMENTS
PROCEDURE.
4-42.
The
following
procedure
takes
advantage
of
the
inherent
stability
of
human
body
temperature
to
verify
proper
operation
of
the
°C
temperature
function.
If
there
is
any
doubt
about
this
procedure,
if
the
thermocouple
tip
has
been
exposed
to
toxic
materials,
or
if
extremeaccuracy
of
measurement
is
desired,
use
(as
a
reference)
the
lag
bath
described
in
the
°C
Adjustment
procedure
in
the
following
Calibration
portion
of
this
section.
1.
Depress
the
TEMP
°C
range
switch
and
release
the
1/S
switch
on
the
UUT.
2.
Connect
the
John
Fluke
thermocouple
accessory
to
the
UUT.
3.
Wipe
the
tip
of
the
thermocouple
accessory
clean
and
place
the
tip
between
your
thumb
and
index
finger
until
the
UUT
display
readings
stabilize.
NOTE
Normal
body
temperature
of
humans
is
37°C
(98.6°
F).
4.
Verify
that
the
UUT
display
is
between
34
and
39°C.
4-43.
CALIBRATION
ADJUSTMENTS
4-44,
Under
normal
operating
conditions
the
8024B
should
be
calibrated
once
every
two
years
to
maintain
the
specifications
given
in
Section
|
of
this
manual.
If
your
8024B
has
been
repaired
or
if
your
8024B
has
failed
any
of
the
Performance
Tests,
immediate.
calibration
is
indicated.
Test
equipment
needed
for
the
calibra-
tion
adjustment
is
listed
in
Table
4-1.
If
the
test
equipment
is
not
available,
your
nearest
John
Fluke
Service
Center
will
be
glad
to
help.
A
list
of
these
centers
is
given
in
Section
5
of
this
manual.
For
verification,
complete
the
Performance
Tests
after
the
calibration
adjustments
are
made.
The
8024B
beingcalibrated
will
be
referred
to
as
the
UUT
(Unit
Under
Test).
4-45.
Use
the
following
procedure
to
perform
the
calibration
adjustments:
1.
Allow
the
UUT
to
stabilize
for
at
least
30
minutes
at
an
ambient
temperature
of
21°C
to
25°C
(70°F
to
77°F).
2.
Complete
the
calibration
access
procedure
presented
earlier
in
this
section.
3.
Select
the
DC
V
function,
200
mV
range
on
the
UUT.
4.
Connect
the
equipment
as
shown
in
Figure
4-3.
5.
Program
the
DMM
Calibrator
for
a
UUT
input
of
+190.0
mV
dc.

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