Zero Point Calibration; To Switch Off - 3B SCIENTIFIC PHYSICS Escola 100 Manual De Instrucciones

4. Symbol legend
Hazard, read instruction sheet
Moving coil galvanometer
Apparatus with electronic amplifier
DC quantities accuracy class 2
AC quantities accuracy class 3
Use in vertical position
Use in horizontal position
Dial position when turned off
Dial position for battery test when bat-
tery charge is satisfactory
Ground symbol
CAT III Measuring category III
Earth symbol
Meter on for measurements with centre
zero point
Meter on for DC measurements
Meter on for AC measurements
Meter switched off
Battery test
Continuity test
EU conformity mark
Electrical safety assured by double in-
sulation
Do not dispose in normal domestic
waste
For use indoors only
5. Initial calibration

Set up the ESCOLA 100 meter either horizon-
tally or vertically.

Do not connect measuring leads to begin with.

Set the four-way switch to
The needle will point to the zero point of the dial.
If it does not, the amount of charge of the battery
should be checked.
6.1 To switch on:

Set the four-way switch to
or
6.2 Checking battery charge:

Set the four-way switch to

Disconnect all measuring leads.

Set the rotary switch to
If the battery is sufficiently charged, the needle will
point to the following range indication,
this is not the case, the battery will need to be re-
placed immediately.

6.3 Zero point calibration:


Set up the analogue multimeter either hori-
zontally or vertically.

Set the four-way switch to

Turn the rotary switch to 600 V.

Connect the common/ground socket and the
voltage measurement socket together by
means of a short connecting lead.

Turn the zero-point trimmer screw to adjust
the zero point as needed.
6.4 Zero point calibration for centre zero
point:
For measurements of DC current and voltage, the
zero point of the scale can be moved to the centre
of the dial.

Disconnect all measuring leads.

Set the four-way switch to
rotary switch to a DC current or voltage range,

Use the zero-point trimmer to line up the nee-
dle precisely in the centre of the dial.

6.5 To switch off:


Set the four-way switch to
When the meter is turned off, the needle points to
6.6 If a measurement is interrupted by battery
cut-out:
or .
After 45 minutes of use, the multimeter is auto-
matically shut off and the needle will then point to
To switch back on:

Set the four-way switch of the analogue multi-
meter to off and then use it to turn the meter
back on.
4
6. Operation
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. If
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and turn the
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