Hioki 3284 - Measuring DC Voltage (DC V); Voltage Measurement

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Chapter 2 Measurement Procedure
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NOTE
2.3 Voltage Measurement
2.3.1 Measurin
g
DC Volta
g
e
(
DC V
)
1. Press to display .
2. Slide the slide cover up using the slide knob. Next,
insert the red test lead to V and the black test lead
to COM of the voltage measurement terminal.
3. Switch between the auto range and the manual range
as necessary.
4. If the counter does not show zero, switch to the range
you will use (manual range), and press
0ADJ/RESET
to perform an auto-zero adjustment.
ADJ
annunciator lights to indicate that auto-zero-
adjustment is complete.
5. Attach or remove the rigid insulating sleeve as
required by the measurement category.
6. Carefully contact the test leads to a circuit.
･ Be sure to use the test leads with the sleeves
attached when performing measurements in the CAT
III measurement category. In a CAT II environment,
if the tips of the test leads do not reach the
measurement object, remove the rigid insulating
sleeve before measuring.
･ You can perform the auto-zero-adjustment up to 4%
of the range.
･ When you switch ranges after auto-zero adjustment,
deviation of the adjustment value will prevent
accurate measurement. Always perform the auto-zero
adjustment after switching ranges. (Do not perform
auto-zero adjustment when using the auto range.)
･ A lit － annunciator indicates that potential is
higher at the black test lead than at the red test lead.
･ The DC V mode permits only DC voltage
measurements that does not include the AC
component (see 1.5: Modes).