Calibration - Fluke 8021B Instruction Manual

8021
Table 4-4.
AC
Voltage Test
STEP
VOLTAGE
RANGE
INPUT
DISPLAY
READING
VOLTAGE
FREQ.
1
200
mV
Short -
00.0
to
00.2
2 200
mV
190
mV
100
Hz
188.4
to
191.6
3
200
mV
19
mV
100
Hz
18.7
to
19.3
4 2
V
1.9V 100
Hz
1.884
to
1.916
5
20V
19V
100
Hz
18.84
to
19.16
6
200V
190
V
100
Hz
188.4
to
191.6
7
750V
750V
400
Hz
741
to
759
if
the alternate
test
equipment
listed
in
Table
4-1
is
used, the Input
Frequency
in
step 7
should be 100 Hz.
All
other factors
of step
7
are the same.
4-35.
DC
Current Test
4-36.
The
following procedure
is
used
to
check the operation
and accuracy of
the
dc
current
ranges:
1.
Set the
output of
the
DC
Current Calibrator
to
zero
m
A.
2.
Connect
the
output
of the
DC
Current Calibrator to the
mA
and
COM MON
input terminals
on the
802
IB.
3.
With
reference to
Table
4-5, select
the
802 IB current range indicated in step
1,
and
set
the
DC
Current Calibrator output to provide the corresponding
802
IB
input current. Verify that the
display
reading
is
within the limits
shown.
4.
Execute and
verify steps
2 through
4
of
Table
4-5,
using
the
procedure
described
in
step 3.
Table
4-5.
DC
Current
(mA) Checks
STEP
CURRENT
RANGE
INPUT
CURRENT,
DC
DISPLAY
READING
1
2
mA
+1.9
mA
1.880 to 1.920
2
20
mA
-19
mA
-18.80
to
-19.20
3 200
mA
+190
mA
188.0
to
192.0
4
2000
mA
+1900
mA
1880
to
1920
4-37.
CALIBRATION
4-38.
Under normal operating conditions, the 8021
Bshould
be
calibrated
once every
two
years
to
maintain the specifications
given
in
Section
1
of this
manual.
If
instrument repairs
have
been
made
or
if
the unit
fails
the
performance
test,
immediate
calibration
is
indicated.
Equipment
required for calibration
is
given
in
Table 4-1
.
If
the necessary
equipment
is
not
available,
your
nearest
authorized
Fluke Technical Service Center
will
be happy to help.
A
list
of
these service
centers, as well as
shipping information,
is
given at the
back
of
this
manual.
4-9