3B Sientific U17450 Скачать руководство пользователя страница 5

10

3.6.1.2 Operating mode: electrical
zero-point center

Adjust the slide switch (4) to the

” setting.

Using the rotary switch (1), select
the corresponding measurement
range “A ...”.

The needle should be located in
the center of the scale.

Connect the multimeter and take
a reading from the lower scale.

3.6.2 Measuring DC current using
shunts

_

+

3.6.2.1 Operating mode: Zero-point
left

Set the slide switch (4) to the

”.

• 

Set the rotary switch (1) to the “V ...

100 mV” setting.

Connect the multimeter and the
take a reading from the upper
scale.

3.6.2.2 Operating mode: Zero-point
center

Set the slide switch (4) to the “

setting.

Set the rotary switch (1) to the “V ...
100 mV” position.

The needle should now point to
the center of the scale.

Connect the multimeter and take
a reading from the lower scale.

3.6.3 Measuring AC current

~

Set the slide switch (4) to the “

setting.

Use the rotary switch (1) to select
the corresponding measurement
range “A

~

”.

Connect the multimeter and take
a reading from the upper scale.

4 Maintenance

4.1 Cleaning

Only use a paintbrush or soft tow-
el to clean the multimeter. If stat-
ic electrical charge builds up on
the view window, this can be elim-
inated using a damp rag or an an-
tistatic agent.

4.2 Replacing the battery

If during the battery test the nee-
dle no longer deflects to the bat-
tery test zone depicted with “

”,

the battery must be replaced (see
3.1).

4.3 Replacing the fuse

The multimeter is equipped with
a safety fuse F3,15/250. The fuse
holder is located on the printed
circuit board. To replace the fuse
the device must be opened as de-
scribed in section 3.1.

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany  • www.3bscientific.com • Technical amendments are possible

Содержание U17450

Страница 1: ...d if it is used in ac cordance with the instructions Do not operate or handle this unit incorrectly or inappropriately The device may only be used by persons who are aware of the haz ards of contact for voltages over 30 V rms and can undertake the appropriate safety precautions This also includes the appearance of unforeseen voltages e g in de fective units or charged capacitors In the case of vol...

Страница 2: ...ing coil movement which is not sensitive to external electromagnet ic fields The safety connection sock ets offer protection against acciden tal touch contact After approx 45 mins the battery is automatically switched off The power can be re established by turning off and on using the slide switch for the oper ating mode The robust plastic hous ing and the spring connected bear ing jewels of the m...

Страница 3: ...n The needle must be lo cated in the OFF position when the multimeter is in a hori zontal position If necessary make the corresponding adjustments with the adjustment screw 5 Check the electrical zero point Set the slide switch 4 into the position Select the measurement range the needle must be set to zero point in the center of the scale otherwise correct using the rotary knob 2 Check the battery...

Страница 4: ...ended 4 7 µF 630 V it is possi ble to isolate DC voltage compo nents in an amplifier output stage for example The resultant mea surement error is less than 0 2 at a measurement frequency of 50 Hz Proceed with the measurement as stated in point 3 4 Measurement of the DC voltage components is performed as de scribed under 3 3 To avoid overloading the set mea surement range must be greater than the i...

Страница 5: ...ake a reading from the lower scale 3 6 3 Measuring AC current Set the slide switch 4 to the setting Use the rotary switch 1 to select the corresponding measurement range A Connect the multimeter and take a reading from the upper scale 4 Maintenance 4 1 Cleaning Only use a paintbrush or soft tow el to clean the multimeter If stat ic electrical charge builds up on the view window this can be elim in...

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