Benning DUTEST Mode D'emploi page 6

4. H ow to test the continuity and reverse
di r ection of semicondutors (continuity test)
- The continuity test must not be performed on live
equipment, if necessary, capacitors have to be
discharged.
- The necessary test potential is provided by the 3
Mignon-batteries 1,5 V, which are integral in the
unit.
- Testing is possible in the range from 0 - 90 k.
- Connect the test grips  with test electrodes 
to the equipment to be tested.
- By contacting the test electrodes  to an elec tri-
cal ly conductive circuit, the LEDs  and  light
up and the test buzzer sounds in case of a mea-
suring resistor < 900 . In case of a mea suring
resistor > 900 , only the LED  lights up and the
test buzzer sounds.
For easy connecting the hole  can additionally be
used. It is suitable for the connection of single wires
up to 2,5 mm².
4.1 H ow to test the continuity and reverse direc-
tion of semiconductors
- The polarity-dependent test must not be per-
formed on live equipment.
- The necessary test potential is provided by the 3
Mig non-batteries 1,5 V, which are integrated in the
unit.
The red test grip  is the 'positive pole'.
The black test grip  is the 'negative pole'.
- Testing is possible in the range from 0 - 90 k.
- Connect test grips  with test electrodes  to the
equipment to be tested.
- By contacting the test electrodes  to a semi con-
ductor, the LEDs  and  light up and the test
buzzer sounds if the circuit is made and in case
of a measuring resistor < 900 . In case of a
measuring resistor > 900  to 90 k, only the LED
 lights up and the test buzzer sounds if the cir-
cuit is made. In case of reverse direction no in di-
ca tion is made!
For easy connecting the hole  can additionally be
used up to 2,5 mm².
5. Pocket torch function
By the switch at the side of the unit  it can be
switched to 'permanently ON' position. The pos si bi-
li ty of con tinuity testing and polarity determination of
sem i conductors is given independently of the switch
po sition.
6. Lamp replacement
Attention! When installing the lamp (bulb), put it into
socket ensuring that the soldered fitting at its side is
placed in the large recess of the socket (otherwise, the
lamp might be jammed when removing it)!
Note:
When opening the housing (battery replacement), the
lens tip lamp might drop out of the housing. Set the
switch to the ON position in order to clamp the lens
tip lamp.
7. Technical data
- Nominal voltage range: max. 400 V
max. voltage from earth 300 V
- Overvoltage category: II (IEC 60664)
(The unit is protected against an overvoltage
surge up to 2500 V.)
- Pollution degree: 2 (IEC 60664)
- Internal resistance: approx. 82 k
- No-load voltage:  5 V
- Test current:  60 µA
- Nominal frequency range: 0 to 60 Hz
- Radio interference suppression: B
- Environmental conditions:
Height: up to 2000 m above sea level
08/ 2010



Temperature range:
- 10 °C to 50 °C (opera ting temperature ran ge)
- 20 °C to 65 °C (sto ring temperature range)
Max. rel. humidity: 80 % up to 31 °C linearly
decreasing 40 % up to 50 °C
- Protection class: II (IEC 60536)
- Protection: IP 30 (DIN 40050)
IP 30 means: Protection against access to dan-
gerous parts and protection against solid impuri-
ties of a diameter > 2.5 mm, (3 - first index). No
protection against water, (0 - second index).
- Dimensions: L 97 x B 59 x H 30 mm
(without cable and test grips)
- lamp type: lens tip lamp E 10 3,7 V 0,3 A
- Weight: 130 g
- Battery: 3 Mignon-batteries 1,5 V
(IEC/ DIN R6/ LR6)
- Connecting cable with test grips: 1000 mm long
8. General maintenance
Clean the exterior of the housing with a clean dry cloth
(exception: special cleansing cloths). Do not use sol-
vents and/ or abrasives to clean the continuity and
circuit tester. Make sure not to contaminate the bat-
tery compartment and the battery contacts with leaking
battery electrolyte. Should such electrolyte contami-
nation or white deposits occur near the battery or the
battery housing, these must also be removed with a
dry cloth.
Battery disposal:
Do not dispose of batteries with the household gar-
bage. You as a consumer are legally obliged to return
used batteries. You can return used batteries to public
collection facilities in your community area or return
them to any retail outlet selling similar batteries. Avoid
using batteries containing dangerous substances!
9. Environmental notice
At the end of the product's useful life, please
dispose of it at appropriate collection points
provided in your country.
DUTEST
®

4