KYORITSU 1710 - Manual (Page 2)

4. Preparation for measurement
4.1 Auto-power-on / Self-diagnostic test
●Auto-power-on
►Short-circuiting the probes as follows powers
on the instrument automatically and goes
into
a Self-diagnostic test.
Instrument may power on;
* when replacing Tips, or
* due to the influence of static charge.
●Self-diagnostic test
WARNING
Do not use the instrument when abnormality
is found at Self-diagnostic test.
►Battery voltage is normal when Power LED is
lighting up.
When the battery voltage is below 2.4±0.1V,
Power LED
flashes or goes off.
Replace batteries according to Clause 7.
►LEDs other than the Power LED should be
flashing and buzzer should sound continuously.
●Auto-power off
►Instrument is automatically powered off after
15 sec when nothing is contacted with the
probes.
(Power LED goes off.)
Auto-power off may not operate;
* when replacing Tips, or
* when a significant electric magnetic field exists
in the vicinity.
4.2 Trouble-shooting
If the following problems occur, unlock the
Battery Case according to clause 7 in this manual,
and then lock it again 5 seconds later.
Then perform the self- diagnostic test (clause 4.1).
* Self- diagnostic test cannot be performed
before/after use of the instrument.
* Auto-power off doesn’t operate.
5. Handy construction
Diameter of Tip and pitch between Tips are
changeable by user.
WARNING
Remove the probes from the measurement
point when replacing Tips or changing
pitches.
5.1 Tip Replacement
►Following shows how to install 4mm Tips on
L1 probe – and L2 probe +.
►Firmly tighten up the 4mm Tips.
5.2 Pitch between two probes
►Pitch between 2 Tips can be 16.7mm or 19.0mm
when rotating L1 probe – by 180 degrees and
sliding in the hooks on L2 probe +.
6. Measurement
WARNING
●Carefully check Clause 2 as well.
●Self-diagnostic test should be done prior to
measurements and confirm LED and
Buzzer works properly.
●Verify proper operation on a known source
before and after use.
●Keep your hand and fingers behind the
barriers on the probes during
measurements.
●Due to the high internal resistance (approx.
300kΩ), the capacitive and inductive
voltages may be indicated.
6.1 Voltage test (Double-pole test)
►Connect both probes to the object under test.
►The voltage is indicated
by LEDs and LCD (only
KEW1710).
Buzzer sounds when a
threshold voltage of 50V
LED
is exceeded.
Live circuit LED lights up :
> 0.3V AC
> 7V DC
►Voltage polarity is indicated in following
manner.
AC +DC -DC
NOTE
●This instrument can make measurements
between L-PE without tripping RCDs.
●When the L2 probe + is the positive (negative)
potential, the Polarity indication LED indicates
“+DC” (“-DC”).
●L/R LED may light up.
6.2 Double-pole test without batteries
WARNING
Verification of live-circuit shouldn’t be
dependent on Double-pole test without
batteries only, but also on the test WITH
BATTERIES. (See Clause 6.1).
Only Live circuit LED flashes when Double-pole
test is carried out without batteries.
LED flashes: AC/DCV > approx. 40V
Flashing Duty: < 3s (40…100V)
< 0.3s (100…690V)
6.3 Single-pole phase test
WARNING
●Carefully handle L1 probe – when it is not
in use.
●Function of this test may not be fully
achieved if the insulation condition of user
or of the equipment under test isn’t
enough.
Verification of live-circuit shouldn’t be
dependent on this Single-pole phase test
only, but also on the Double-pole test.
(See Clause 6.1.)
►Grasp the instrument firmly and connect the L2
probe + to the object under test.
►Live circuit LED lights up and buzzer sounds
when a voltage of approx. 100V AC or more
exists in the object under test. (Pol≥100VAC)
Grasp Firmly!!!
19mm 16.7mm
unscrew Tighten