Rolson 27259 Manual de usuario

IV. OPERATION INSTRUCTION:

1. DC Voltage Measurement V(DCV):

1.1 Connect RED test lead to “V mA” jack, BLACK test lead to “COM” jack.

1.2 Set the FUCTION switch to the desired V(DCV) position. If not sure, set to the

highest range.

1.3 Connect the test leads across the source or load under measurement.

2. DC Current Measurement A (DCA):

2.1 Connect the RED test lead to “V mA” jack when the current is less that 200 mA

and to “10A” jack when the current is larger than 200 mA. Connect the BLACK test

lead to the “COM” jack. Set the FUNCTION switch to the desired DCA position.

Connect the test leads across the source or load under measurement.

3. AC Voltage Measurement V (ACV):

3.1 Connect the RED test lead to “V mA” jack and BLACK test lead to the “COM” jack.

3.2 Set the FUCTION switch to the desired ACV position

3.3 Connect the test leads across the source or load under measurement.

4. Resistance Measurement:

4.1 Connect the RED test lead to “V mA” jack and BLACK test lead to “COM” jack.

4.2 Set the FUNCTION switch to the OHM position.

4.3 Connect the test leads across the resistor under measurement.

4.4 When measuring the resistance, the power should be turned off and in short circuit

staues by connecting the two test leads.

5. Transistor hFE Measurement:

5.1 Set the FUNCTION switch to the hFE position.

5.2 Insert the E.B.C. of the PNP or NPN transistor to the proper jack in the socket on the

front panel.

6. Diode and Audible Continuity Measurement

6.1 Connect RED test lead to the “V mA” jack and BLACK test lead to the “COM” jack.

6.2 Set the FUNCTION switch to the 　　　　　　　position and connect the RED test leads

to the ANODE of diode and BLACK to CATHODE. The display will the show the

approx. Forward voltage of the diode. If connect the test leads on the other way

round, the display will show an overrange status”1”

6.3 Buzzer sounds if the resistance between the two probes less than approximately 70.

7. Battery Test:

7.1 Connect RED test lead to the “VΩmA”jack and BLACK test lead to the “COM” jack.

7.2 Turn the FUNCTION switch to the BATT position. Connect the test lead across the

battery under measurement. The display will show the voltage of the battery.

V.　BATTERY AND FUSE REPLACEMENT:

When the voltage of the battery is low, the symbol “BATT” will appear on

the display. Then the battery should be replaced. You should check the fuse when

no measurement could be taken for current using mA range.

Digital Multimeter

27259

Operating Manual

- 3 -

To Prevent Serious Injury From Accidental Operation:

Turn The Power Switch Of The Tool To Its “Off” Position

And Remove The Test Leads Before Performing Any Inspection,

Maintenance, Or Cleaning Procedures.

WARNING

Thanks for buying our product. Please go through the instruction manual before starting to use

the meter.

Safety Instructions

To avoid an electric shock or injury, read and follow the instructions. If at all unsure seek advice

from a suitably competent and qualifies person before use. Retain instructions for future reference.

• Check the meter and leads before use, if damaged do not use. Ensure insulation around leads

and connectors are not damaged. This product has no serviceable parts

• Do not use in area where there is flammable vapour or gas

• Do not use above the marked voltages

• When measuring current, turn off the circuit before using the meter

• Keep fingers behind the fingers guards on the probes and remove probes before replacing the

battery. Do not use without the battery cover. Replace battery when the low battery indicator

appear

• Connect the common test lead before the live test lead, when disconnecting, disconnect the

live lead first

• Caution when working above 30V AC, 42V peak or 60V DC as these pose a shock hazard.

Do not measure voltages above 500V in category 1 installations

I. INTRODUCTION:

1. Switch

Our DMM adopt rotational switch which situated at the middle of the front case.

It is used for the selection of FUNCTION, RANGE AND POWER ON - OFF.

In order to save energy, please turn the switch to “OFF” position when not in use.

2. Display

3 12mm Height LCD Display.

3. “COM” Jack

Common Jack

4. “VΩmA” Jack

Voltage, resistance, no more than 200Ma,

current and battery input test jack,

50Hz sine wave output jack.

5. “10A” Jack

For the input of more than 200mA current

II. FEATURES:

Display: 3 LCD With Maximum Display 1999.

Polarity: Auto Polarization

Overrange: Maximum Display “1”

Working Environment: Temp. 0 - 40˚C Relative

Storing Environment: - 15 - 50˚C

Battery: 9V

High Voltage Symbol: DC 1000V or AC 750V range will show high voltage symbol ”HV”

Low Voltage Indication: Left side of LCD will show 　　　　　　or BAT symbol.

Weight: 126g Not Include Battery

III. TECHNICAL SPECIFICATION:

Accuracy: +a% Reading + No. Of Digits

Guaranteed For 1 Year.

Environmental Temperature: 23˚C + 5˚C

Relative Humidity: <75% - 1 -

Range

200mv

Resolution

100uv

Accuracy

±0.5% of Rdg ±2 Digit

- 2 -

2mV 1mV

20mV 10mV

200V 100mV

1000V

Input impedance: 1M

Overload protection: DC or AC peak value of 1000V.

2. DC Current:

1. DC Voltage:

  



RANGE RESOLUTION ACCURACY

200uA 100nA

1uA

10uA

100uA

10mA

100mV

2000uA

20mA

±1% of rdg ±2D

±1.2% of rdg ±2D

±2% of rdg ±2D

200mA

10A

Overload protection: 02A/250V fused 10 A range not fused.

3. AC Voltage:



RANGE RESOLUTION ACCURACY

200V

1000V

±1.2% of rdg ±10D

Frequcucy range: 45Hz to 400Hz

Overload protection: AC 750V rms

Indication:Average value(rms of sine wave.)

4. Resistance:



RANGE RESOLUTION ACCURACY

200Ω

2000Ω

20KΩ

200KΩ

2000KΩ

100mΩ

1Ω

10Ω

100Ω

1KΩ

±0.8% of rdg ±20D

Overload protection: 250VDC or AC rms.Less than 10 sec.

Maximum open circuit voltage: 2.8V

5. Transistor hFE:

Vce approximately 2.8V,1b approximately 10A.

Display show approximately hFE 0-1000.

6. Dlode and Audible Continulty:

Diode: Testing voltage approx. 2.4V, current 1.5Ma. indicate forward diode approx. value.

Buzzer: Sounds when measure less than 70 ± 20.

7. Battery Test:

RANGE CURRENT CONSUNED

1.5V

50mA

5mA

±0.8% of rdg ±3 Digit1V

DC Volt

Selection

Area

OHM

Selection

Area

AC Volt

Selection

Area

Switch DC Amp

Selection

Area

Transistor

Selection

Area

10A Jack

Transistor

/hFE Jack

Com JackDiode

Selection

Area

“VΩmA”

Jack

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