LIMIT 300 Manual de usuario

Operating manual

300

Palm Size

Digital Multimeter

Illustrations

Fig 1. Voltage measurement

DC and AC

Fig 2.

DC Current Measurement

Fig 3. Diode test

Continuity test

Fig 4. Temperature measurement

Fig 5. Replacing the Battery

Replace the fuse

DC Voltage

Range Resolution Accuracy Overload

Protection

200mV 100μV 250V DC or AC

2000mV 1mV ±(0,5%+2)

20mV 10mV 500V DC or AC

200V 100mV

500V 1V ±(0,8%+2)

AC Voltage

Range Resolution Accuracy Overload

Protection

200V 100mV 500V DC or AC

800V 1V ±(1.2%+10)

DC Current

Range Resolution Accuracy Overload

Protection

200μA 1μA ±(1%+2) 315mA, 250V

20mA 10μA fast type fuse:

200mA 100μA ±(1.2%+2) o 5x20 mm

10A 100mA ±(2%+2) Un-Fused

300

Tabels

Resistance

Range Resolution Accuracy Overload

Protection

200Ω0.1Ω±(0.8%+5)

2000Ω1Ω250V DC

20kΩ10Ω±(0.8%+2) or AC

200kΩ100Ω

20MΩ10MΩ±(1%+5)

Diodes and Continuity

Range Resolution Remark Overload

Protection

1mV Displays approximate forward

voltage drop: 0.5~0.8V.

250V DC or AC

1ΩBuzzer beeps at ‹70Ω

Temperature

Range Resolution Accuracy Overload

Protection

-40°C~150°C 1°C ±(18%+3)

150°C~1000°C ±(1.5%+15) 250V DC or AC

-40°F~302°F 1°F ±(1%+4)

302°F~1832°F ±(1.5%+15)

300

Language page

English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

Svenska . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-17

Norsk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-23

Dansk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-30

Suomi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31-36

Deutsch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-44

Nederlands . . . . . . . . . . . . . . . . . . . . . . . . . . . .45-51

Français . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52-58

Italiano . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59-65

Español . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66-72

Português . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73-79

Polska . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80-86

Eesti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87-92

Latviski . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93-100

Lietuvi

kai . . . . . . . . . . . . . . . . . . . . . . . .

101-108

PyÔÔÍËÌ . . . . . . . . . . . . . . . . . . . . . . . . . . . .109-115

Language Contents

Overview

This Operating Manual covers information on safety and cautions.

Please read the relevant information carefully and observe all the

Warnings and Notes strictly.

Limit 300 are 3 1/2 digits with steady operations, fashionable design

and highly reliable hand-held measuring instrument.

General Specifications

Measuring range and accuracy see page 2-3.

•Maximum Voltage (including transient overvoltage) between any

Terminals and Grounding: 500V rms.

•Fused Protection for VΩmA Input Terminal: 315mA, 250V fast

type,o5x20 mm

•10A Terminal: Un-fused.

•Range: Manual ranging

•Maximum Display: Display: 1999 or 31/2 digits.

•Measurement Speed: Updates 2~3 times /second.

•Temperature: Operating: 0°C~40°C (32°F~104°F).

Storage: -10°C~50°C (14°F~122°F).

•

Battery Type: One piece of 9V Battery NEDA 1604 or 6F22 or 006P.

•Safety/Compliances: IEC61010 CAT.I 600V overvoltage and

double insulation standard.

•Certification:

Safety Information

This Meter complies with the standards IEC61010: in pollution

degree 2, overvoltage category (CAT I 600V, CAT II 300V) and dou-

ble insulation.

Warning

To avoid possible electric shock or personal injury, and to

avoid possible damage to the Meter or to the equipment under

test, adhere to the following rules:

300

English

•Before using the Meter inspect the case. Do not use the Meter if it

is damaged or the case (or part of the case) is removed. Look for

cracks or missing plastics. Pay attention to the insulation around

the connectors.

•Inspect the test leads for damages insulation or exposed metal.

Check the test leads for continuity.

•Do not apply more than the rated voltage, as marked on the

Meter, between the terminals or between any terminal and the

grounding.

•The rotary switch should be placed in the right position and no

any changeover of range shall be made during measurement is

conducted to prevent damage of the Meter.

•When the Meter working at an effective voltage over 60V in DC or

42V rms in AC, special care should be taken for there is danger of

electric shock.

•Do not use or store the Meter in an environment of high tempera-

ture; humidity, explosive, inflammable and strong magnetic fiels.

The performance of the Meter may deteriorate after dampened.

•

When using the test leads, keep your fingers behind the finger guards.

•Disconnect circuit power and discharge all high-voltage capacitors

before testing resistance, continuity, diodes and current.

•Before measuring current, check the Meter´s fuses and turn off

power to circuit before connecting the Meter to the circuit.

•Replace the battery as soon as the battery indicator appears. Whit

to low battery, the Meter might produce false readings that can

lead to electric shock and personal injury.

Functional Buttons

Hold • ON/OFF for hold function.

•H shows on the display when value is hold.

Blue • ON/OFF for display back light.

300

Voltage measurement DC and AC (see fig 1)

1. Insert the red test lead into the VΩmA terminal and the black test

lead into the COM terminal.

2. Set the rotary switch to an appropriate measurement position in

V--range for DC or V~ for AC. When the value is unknown

always start from the max range 500 V.

3. Connect the test leads across with the object being measure.The

measured value shows on the display.

Note

•Displays 1 selected range is overload; it is required to select a

higher range in order to obtain a correct reading.

•In each range, the Meter has an input impedance of approx.

10MΩ. This loading effect can cause measurement errors in high

impedance circuits. If the circuit impedance is less than or equal

to 10kΩ, the error is negligible (0.1% or less).

DC Current Measurement (see fig 2).

Warning

Never attempt an in-circuit current measurement where the voltage

between terminals and ground is greater than 60V.

If the fuse burns out during measurement, the Meter may be dama-

ged or the operator himself may be hurt. Use proper terminals, func-

tion, and range for the measurement.

When the testing leads are connect-ed to the current terminals, do

not parallel them across any circuit.

To measure current, connect as follows:

Turn off power to the circuit. Discharge all high-voltage capacitors.

2. Insert the red test lead into the 10A or VΩmA terminal and the

black test lead into the COM terminal.

3. Set the rotary switch to an appropriate measurement position in

A... range. When the value is unknown always start from the

max range 10 A.

English

4. Break the current path to be tested. Connect the red test lead to

the more positive side of the break and the black test lead to the

more negative side of the break.

5. Turn on power to the circuit. The measured value shows on the

display.

Resistance measurement

1. Insert the red test lead into the VΩmA terminal and the black test

lead into the COM terminal.

2. Set the rotary switch to an appropriate measurement position in

Ωrange.

3. Connect the test leads across with the object being measured.

The measured value shows on the display.

Note

•The test leads can add 0.1Ωto 0.3Ωof error to resistance measu-

rement. To obtain precision readings in low-resistance measure-

ment, that is the range of 200Ω, short-circuit the input terminals

beforehand and record the reading obtained. This is the addi-

tional resistance from the test lead. When 1 displays the resistance

are higher than selected range.

Diode test (see fig 3)

Use the diode test to check diodes, transistors, and other semicon-

ductor devices. The diode test sends a current through the semicon-

ductor junction, and then measures the voltage drop across the

junction. A good silicon junction drops between 0.5V and 0.8V.

To test a diode out of a circuit, connect the as follows:

1. Insert the red test lead into the VΩmA terminal and the black test

lead into the COM terminal.

2. Set the rotary switch to diode position.

3. For forward voltage drop readings on any semiconductor compo-

nent, place the red test lead on the component’s anode and

place the black test lead on the component’s cathode.

The measured value shows on the display.

Continuity test (see fig 3)

To test for continuity, connect as follows:

1. Insert the red test lead into the VΩmA terminal and the black test

lead into the COM terminal.

2. Set the rotary switch to continuity position.

3. Connect the test leads across with the object being measured.

The buzzer sounds if the resistance of a circuit under test is less

than 70Ω.

Temperature measurement (see fig 4)

1. Insert the red temperature probe into the VΩmA°C°F terminal

and the black temperature probe into the COM temperature.

2. Set the rotary switch to °C or °F position.

3. Place the temperature probe to the object being measured. The

measured value shows on the display.

Note

•The Meter automatically displays the temperature value inside

the Meter when there is no temperature probe connected.

•The included point contact temperature probe can only be used

up to 250 °C(482°F).

•The temperature function is type K. For measuring higher tempe-

ratures other probes of type K can be used together with a multi

socket.

300

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