YOKOGAWA 320110, User Manual

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IM 3201–E
3. Operation
3.1 Instruction for Use
1. Make sure prior to measurement that the pointer rests at the
zero position of the scale. If not, turn the zero adjust screw to
set it to zero. Look at the scale so that you can see the pointer
is accurately aligned with the pointer reflected on the mirror, and
then read the value.
2. When the measuring value is unknown, start measurement with
the maximum range provided and then continue to lower range
until proper range is obtained.
Do not select the switch while
the pointer is still deflecting.
3. Do not place the tester in strong magnetic fields or on steel
plates to avoid possible pointing errors.
4. When storing or carrying the tester, turn off the measuring range
select switch and set the polarity select switch to its center
position to avoid any possible damage.
Make sure to read and observe all the following cautions before
starting measurement to ensure safety.
CAUTION

Checking Fuse
Make sure prior to measurement that the fuse is not burned
out.
<Checking Method>
Set the measuring range select switch to
“Ω” range. The fuse operates normally
if the pointer points at zero Ω when
shorting the V.A.Ω terminal.
The pointer does not deflect when the fuse is burned out.
At the start of measurement, always be sure to check it.
Never use the instrument when the fuse is burned out
to avoid electrification.
It happens when the instrument
falsely recognizes voltage-applied measured objects as being
inactive.

Checking Measurement Range
· Make sure that the measuring range select switch is
set properly and that the measurement leads and the
measurement (input) terminal are connected appropriately.
Measuring high voltages erroneously while the range is
in “DC mA” may cause personnel injury or damage to the
instrument.
· Prior to turning on/off the measuring range select switch,
disconnect the measurement leads from the measured object.

Installation Location
Be sure to place the instrument on a flat stable surface in a
stable environment.
T h e m e a s u r e m e n t l e a d s m a y g e t d i s c o n n e c t e d f r o m
the measurement terminals due to overturn or fall of the
instrument. If it happens, there is a possibility of electrical
shock especially when a high voltage is measured.