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essary, capacitors have to be discharged.
-
Apply the two test probes 7 and 8 to the system
parts to be tested.
-
In case of continuity (resistance value R ≤ 100 Ω
to 200 Ω), an acoustic signal is emitted and the
yellow LEDs 1 , 2 and 3 light up.
-
The resistance value can be roughly estimated by
means of the LED step indicator 1 , 2 and 3 .
≤ 100 Ω
Resistance (R)
-
200 Ω
Buzzer
●
1 LED 100 Ω
●
2 LED 1 kΩ
●
3 LED 10 kΩ
-
To determine the conducting direction of a diode,
apply the black (-) test probe 8 to the cathode
and the red (+) test probe 7 to the anode of the
diode. The conducting direction has been deter-
mined as soon as the yellow LEDs 1 , 2 and 3
light up (running light).
-
If a voltage is applied to the test point, the device
warns the user of an external voltage applied by
means of the red LEDs 4 and/or 5 lighting up.
In this case, stop the test immediately and ensure
the absence of voltage!
Setting the buzzer volume
The buzzer volume can be set in four steps. Step 1
(low), step 2 (medium), step 3 (high) and step 4 (very
high). In step 5, the buzzer is OFF and the LED torch
is ON.
To set the volume, short-circuit the test probes 7 and
8 and press and hold the push-button until the
desired volume is set. The buzzer volume set remains
stored until it is changed the next time.
5.
External-voltage and polarity indication
-
Apply BOTH test probes 7 and 8 to the system
parts to be tested.
-
The LEDs 4 and 5 for external-voltage indica-
tion detect DC (
range from 6 to 400 V.
-
AC voltages (
) are displayed by the (+) LED 4
and the (-) LED 5 lighting up simultaneously.
-
DC voltages (
4 or the (-) LED 5 lighting up. The (+) LED 4
lights up, if the positive pole of the voltage source
is applied to the red (+) test probe 7 and the neg-
ative pole of the voltage source is applied to the
black (-) test probe 8 .
Attention!
The external-voltage indication does not replace a
two-pole voltage tester for determining the absence of
voltage.
Additional indication for external-voltage detection
(two-pole)
If the buzzer is switched on during the continuity test,
a pulsating acoustic signal warns of an external vol-
tage applied. If the buzzer is switched off during the
continuity test, the LED torch will flash as soon as
an external voltage is applied. The additional indica-
tion (pulsating acoustic signal or flashing LED torch
) can be deactivated. For this, apply the two test
probes 7 and 8 to a voltage source (6 V to 400 V)
and press the push-button for approx. 1 second. To
activate the additional indication (pulsating acoustic
signal or flashing LED torch ), repeat this procedure.
6.
Single-pole external conductor test (phase)
-
Apply the black (-) test probe 8 OR the red (+)
09/ 2014
≤ 1 kΩ
≤ 10 kΩ
≤ 100 kΩ
●
●
●
) and AC voltages (
) within a
) are displayed by the (+) LED
test probe 7 to the system part to be tested.
During the single-pole external conductor test
(phase), make absolutely sure not to touch the
bare testing electrode 6 of the other test probe
and make sure that it remains contactless.
-
If the red LED 4 flashes, the external conductor
(phase) of an AC voltage is applied to this system
part.
> 10 kΩ
Additional indication for external conductor test
If required, an additional indication (pulsating acoustic
signal or flashing LED torch ) can be activated for
the external conductor test. To activate the additional
indication, connect the black (-) test probe 8 OR the
red (+) test probe 7 to the external conductor (phase)
● ↓
1.
of a socket and press the push-button for approx. 1
● ↓
second. To deactivate the additional indication, press
2.
the push-button once again. The additional indica-
● ↓
3.
tion (pulsating acoustic signal or flashing LED torch
) depends on the buzzer volume set for the continu-
ity test (see chapter 4).
Note:
The single-pole external conductor test (phase) can be
carried out in an earthed mains from 230 V, 50 Hz /
60 Hz (phase to earth) on.
7.
Cable break detector
-
The cable break detector is intended for the
non-contact localization of cable breaks on
exposed live lines.
-
Pass the detector over a live line (e.g. a cable
reel or a chain of lights) from the feeding point
(phase) in direction of other end of the line.
-
As long as the line is not interrupted, the red LED
4 is flashing.
-
The point of the cable break has been localized as
soon as the red LED 4 goes out.
Additional indication for cable break detector
An additional indication (pulsating acoustic signal or
flashing LED torch ) activated for the single-pole
external conductor test (see chapter 6) is also activa-
ted for the cable break detector.
Note:
The cable break detector can be used in earthed
mains from 230 V, 50 Hz/ 60 Hz (phase to earth) on.
8.
LED torch
-
The device is provided with a high-power LED
torch with can be switched on and off by press-
ing the push-button .
-
It is switched off automatically after approx. 2 min-
utes.
Setting the luminosity
The luminosity of the LED torch can be set in four
steps.
Step 1 (25 %), step 2 (50 %), step 3 (75 %) and step
4 (100 %). To set the luminosity, press and hold the
push-button until the desired luminosity is set. The
highest step 4 (100 %) will be confirmed by means of
an acoustic signal. The luminosity set remains stored
until it is changed the next time.
9.
Battery replacement
-
Do not apply voltage to the device when the bat-
tery compartment is open!
-
The battery compartment is located on the back of
the device.
-
Slightly press down the catch by means of a
DUTEST
pro
®
Warning!
Potentially dangerous optical radiation!
Do not look directly or indirectly via
reflecting surfaces into the LED beam!
Danger to your retina!
5
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