Fluke 87V Ex - Page 24

87V Ex
Users Manual
16
When measuring voltage, the Meter acts approximately
like a 10 MΩ (10,000,000 Ω) impedance in parallel with
the circuit. This loading effect can cause measurement
errors in high-impedance circuits. In most cases, the error
is negligible (0.1% or less) if the circuit impedance is
10 kΩ (10,000 Ω) or less.
For better accuracy when measuring the dc offset of an ac
voltage, measure the ac voltage first. Note the ac voltage
range, then manually select a dc voltage range equal to or
higher than the ac range. This procedure improves the
accuracy of the dc measurement by ensuring that the
input protection circuits are not activated.
PEAK MIN MAX
Hi Res
1 Second
OFF
mA
A
mV
V
V
A
A
mA
COM V
A
400mA
FUSED
10A MAX
FUSED
Ex-Area:
Ui = 65 V
Ii = 5 A
Ta = -20 C ... +50 C
ZELM 05 ATEX 0274
Geräterückseite beachten!
Observe reverse side of unit!
1000 V
CAT
CAT 600V
MIN MAX
RANGE
REL
Hz %
AutoHOLD
˚
C/
˚
F
PEAK MIN MAX
Hi Res
1 Second
OFF
mA
A
mV
V
V
A
A
mA
COM V
A
400mA
FUSED
10A MAX
FUSED
Ex-Area:
Ui = 65 V
Ii = 5 A
Ta = -20 C ... +50 C
ZELM 05 ATEX 0274
Geräterückseite beachten!
Observe reverse side of unit!
1000 V
CAT
CAT 600V
MIN MAX
RANGE
REL
Hz %
AutoHOLD
˚
C/
˚
F
Switch Box
V
+
AC Voltage
DC Voltage
V
mV
ecg2f.eps
Figure 2. Measuring AC and DC Voltage