Bort 91271143 Manual Download

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Digital Multimeter

Intended Use

The multimeter is suitable for measuring:
• Direct voltage (VDC, voltage of accumulator or battery,

for example)

• Direct current (ADC)
• Alternating voltage (VAC, voltage of the mains input of a

device, for example)

•  Resistance (Ω, Ohm)
•  Diodes and hFE transistor measurement
•  Alternating current (AAC)
• Continuity test

Technical specifi cations (fi g. 1)

Product elements (fi g. 2)

A – 3,5-digit LCD display (max. display: 1999. Display of
decimal point, polarity, overload and discharged battery
indication.
B – FUNCTION switch: Rotary switch for the range to beset
C – 20 A. Positive connection for current measurements

over 200 mA up to a maximum value of 20 A.

D – mA. (0-200 mA)
E – COM. Negative connection.
F – VΩ. Positive connection for voltage and resistance

measurements.

SAFETY WARNINGS

WARNING! Measuring high voltages and currents
poses a life hazard. Never touch exposed metallic
parts of the instrument leads.

• The multimeter is sensitive. Protect it from vibrations

and do not let it fall down.

• If the multimeter is not going to be used for a time,

please switch it OFF to save on batteries.

• If the multimeter is not gong to be used for a long pe-

riod, remove the battery in order to avoid spilling.

• Do not subject the device to high humidity or high

temperatures.

• Keep the multimeter away from strong magnetic fi elds.
• Remove the instrument leads immediately if you smell

burnt cable insulation.

• Use the multimeter only if the housing is closed.
• Use the multimeter only for measurements of the class

I or II.

• Do not use the multimeter for measurements in the

class III or IV.

OPERATION
Before putting in service

• In case the voltage and/or the current to be measured

is/are unknown, set the rotary knob on the largest meas-
uring range. If the accuracy on the rotary knob is insuf-
fi cient, set on a lower range and soon.

• If the device is not going to be used temporarily, put the

rotary knob in the OFF position.

• The switching of the multimeter is diff erent for measur-

ing voltage and for measuring current. Parallel connec-
tion in voltage measurement and series connection in
current measurement. In the latter case, a conductor in
the power circuit to be measured must be interrupted.

• Never connect a power source or voltage to the multim-

eter, if the FUNCTION switch is in the Ω or

position.

• Never connect a voltage higher than 1000 V DC or 750 V

AC to the measuring device.

Measurements

Measuring direct voltage (V DC)

• Connect the BLACK lead to the «COM» connector socket

and the RED lead to the «VΩmA» connector socket.

• Set the FUNCTION switch on the desired «V» setting and

connect the leads to the voltage source to be measured
or measuring points. Observe correct polarity (red is +
and black is -), otherwise the display shows a minus sign
before the value.

• Read off the measured value in Volt.

RANGE

ACCURACY

RES.

200 mV

± 1,5% of rdg ± 1 dgt

100 μV

2 V

1m V

20 V

10m V

20 V

100m V

1000 V

± 1,5% of rdg ± 2 dgt

1 V

Input resistance 10 MΩ
Overload protection DC 1000 V or AC 750 V
Eff ective value (outside 200-mV-range with highest value of
250 V Eff ective value).

HINT:
• In case the voltage range is unknown, you must put the

FUNCTION switch in the highest measurement range
and then reduce the range gradually if required.

• If the fi gure «I» now appears on the display, the meas-

urand lies outside the range set. The FUNCTION switch
must be switched to a higher range.

• The maximum input voltage is 1000 V DC. Higher volt-

ages cannot be measured.

• Proceed extremely cautiously with the measurement of

high voltages.

Measuring alternating voltage (V AC)

• Connect the BLACK lead to the «COM» connecting point

and the RED lead to the «VΩmA» connecting point.

• Set the FUNCTION switch on the desired «V» setting and