3B Scientific ESCOLA10 User Manual
3B SCIENTIFIC
Multimeter Escola 10 1006810
Instruction sheet
01/13 ALF
®
PHYSICS
1 Meter display with mirror
scale
2 Slotted screw for zero
calibration
3 Adjustment knob for zero
calibration
4 Measurement range dial
5 Operating mode switch
6 Voltage measurement
socket
7 Current measurement
socket for up to 3 A
8 Current measurement
socket for up to 10 A
9 Safety ground socket
1. Safety instructions
The Escola 10 multimeter conforms to the safety
requirements for electrical equipment for measurement, control and laboratory use in DIN EN
61010 part 1. Safe operation of the apparatus is
guaranteed with correct handling. However, safety
is not guaranteed if the apparatus is handled improperly or carelessly.
• Read this manual carefully before using the
multimeter and follow the instructions!
The multimeter may only be used by people who
are aware of the dangers of electric shock and are
able to take the necessary safety pürecautions.
• Whenever measurements are being made,
in which there is a danger of electric shock,
a second person should always be informed.
• Before using the meter, check the case and
test leads for any damage. In the event of any
malfunction/operational defect or visible damage, do not use the meter. Pay particular attention to the insulation surrounding the
measurement sockets.
• Use with caution when working above 30 V
AC rms, or 60 V DC. Such voltages pose a
shock hazard.
• The limit of the measurement range must
not be exceeded. If the values of the measurand are unknown, always switch from a
higher measurement range to a lower one.
• Do not conduct measurements in a humid
environment. Work area, hands, shoes and
floor must be dry.
• When measuring current, turn off circuit
power before connecting the meter in the
circuit.
1
• Connect the common test lead before you
connect the live test lead. When you disconnect test leads, disconnect the live test lead
first.
• Before the case is opened, the meter has to
be switched off and the leads must be disconnected from the meter.
• When disposing empty batteries follow the
local regulations. Never dispose of them in
the regular household garbage.
2. Symbol legend
Read instruction sheet
V Voltage
A Current
Moving coil galvanometer
Apparatus with electronic amplifier
DC quantities accuracy class 2
AC quantities accuracy class 3
Use in horizontal position
2
Test voltage
Use in vertical position
DC quantities
AC quantities
Needle position zero centre
“OFF” position
CAT II Measuring category II is intended for mak-
ing measurements on circuits directly
connected to low-voltage üpwer supplies
(EN 61010-1)
3. Description
The ESCOLA 10 multimeter enables precision
measurements by analogue means in education,
training and practical applications. It measures
AC and DC voltage or current and provides for
measurements with the needle centred on the
dial for DC quantities. Resistance (R) and conductance (G) or impedance (Z) aund admittance
(Y) can be obtained by division.
All measurement ranges are selected by means of
a rotary dial. Two linearised mirror scales, graded in
a 1:3 ratio, guarantee easy readability of the measured values.
The trimmer for setting the zero point in the
centre allows the zero point to be set precisely
when it drifts electrically.
Isolation of the sockets for voltage and current
measurement allow both to be measured in
succession simply by turning the range selector
switch, without any need for reconnecting or
changing the measuring leads.
Use of a robust core-magnet measuring instrument
set-up and an impact resistant casing allows the
instrument to withstand rough handling in awkward
conditions.
The ESCOLA 10 is protected in such a way that
over-loads in the selectable current ranges
automatically cause the power to be limited.
4. Technical data
Measuring category CAT II
Voltage ranges: 0.1; 0.3, 1; 3; 10; 30,
100, 300, 600 V; AC/DC
Current ranges: 0.1; 0.3; 1; 3; 10; 30;
100; 300 mA; 1; 3; 10 A
AC/DC
Input resistance: 1
MΩ AC/DC
Voltage drop for current
measurements: 100 mV AC/DC approx.
Accuracy: DC class 2; AC class 3
Electrical zero
calibration: For all DC ranges
Accuracy for zero
centre: Class 5
Frequency ranges:
1 V – 600 V: 20 Hz…50 Hz
0.3 V: 20 Hz…50 Hz
…20 kHz
…9 kHz
Current ranges: 20 Hz…50 Hz…43 kHz
Scale length: 80 mm
Power supply: 1x 1.5 V, IEC R6 with
test function
Voltage overload ranges: 600 V load in those
voltage ranges for a
lengthy period
Current overload protection ranges (except for
10 A range):
Integral limiting load: 450 A
Surge current limit I
FMS
: 300 A
2
s
Long-term current
limit I
Dimensions: 98 x 148 x 49 mm
: 35 A
FAV
3
Weight: 300 g approx.
2
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