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DC Current

Range

Resolution

Accuracy

20 µA

10 nA

±(1.2 % + 5)

200 µA

100 nA

±(1.0 % + 5)

2000 µA

1 µA

20 mA

10 µA

200 mA

100 µA

±(1.2 % + 5)

10 A

10 mA

±(2.0 % + 5)

Overload Protection: 250mA/250V fused (Range 10A unfused).
Measuring Voltage Drop: 200mV

Resistance 

Range

Resolution

Accuracy

200 Ω

100 mΩ

±(1.0 % + 5)

2000 Ω

1 Ω

±(0.8 % + 5)

20 kΩ

10 Ω

200 kΩ

100 Ω

2000 kΩ

1 kΩ

±(1.2 % + 5)

Diode and audible continuity

Symbol

Description

The built-in buzzer will sound if the rezistance of the circuit under 
test is less than 50 Ω
The approximate forward voltage of diode under test will be 
diaplayed on the LCD

OPERATING INSTRUCTIONS
DC Voltage Measurement

  1.  Connect the red test lead to „VmAΩ“ jack and the black test lead to „COM“ jack.
  2. Set the Function/Range switch to desired V  range. If the voltage to be measured 

is not known beforehand, set the range switch to the highest range and then turn it 
down range by range until satisfactory reading is obtained.

  3.  Connect the test leads to the device or circuit to be measured.
  4.  Turn on the power of the device to be measured. The voltage value will appear on the 

LCD along with the polarity of the red test lead.

  When 600V range is exceeded please terminate measuring immediately. Otherwise 

electric injury or damage of multimether can occur.

AC Voltage Measurement

  1.  Connect the red test lead to „VmAΩ“ jack and the blafl test lead to „COM“ jack.
  2. Set the Function/Range swithc to desired V~ range. If the voltage to be measured 

is not known beforehand, set the range switch to the highest range and then tur nit 
down range by range until satisfactory reading is obtained.

  3.  Connect the test leads to the device or circuit to be measured.
  4.  Turn on the power of the device to be measured. The voltage value will appear on the 

LCD.

  When 600V range is exceeded please terminate measuring immediately. Otherwise 

electric injury or damage of multimether can occur.

DC Current Measurement

  1. Connect the red test lead to „VmAΩ“ jack and the black test lead to „COM“ jack (for 

current between 200mA and 10A, connect the red test lead to „10A“ jack).

  2.  Set the Function/Range switch to desired A  range.
  3.  Open the circuit to be measured, and connect the test leads in series with the load in 

which the current is to be measured.

  4.  Read the current value on the LCD.

   Never carry out measuring if voltage is higher than 250 V in open circuit. Such measuring 

can lead to damage of multimether (fuse burning or electric discharge) or electric injury.

 

  Before measuring make always sure that you are using the right range of measuring!

    MULTIMETER EM391

Read this owner’s manual thoroughly before use

 WARRANTY

This instrument is warranted to be free from defects in material and workmanship for 
a period of one year. 
Any instrument found defective within one year from the delivery date and returned to the 
factory with transportation charges prepaid, will be repaired, adjusted, or replaced at no 
charge to the original purchaser. This warranty does not cover expandable items such as 
batteries or fuse. If the defect has been cause by a misuse or abnormal operation conditions, 
the repair will be billed at a nominal cost.

SAFETY INFORMATION

The multimeter has been designed according to IEC-61010 concerning electronic measuring 
instruments with a measurement category (CAT II 600V) and Pollution degree2

International Electrical Symbols

AC (Alternating Current) 

DC (Direct Current) 

Earth ground 

Double Insulated 

Deficiency of Built-In Battery 

Diode 

Fuse 

Important safety information. Refer to the manual 

Dangerous voltage may be present

Conforms to European Union directives 

 WARNING

To avoid possible electric shock or personal injury, follow these guidelines:
 • 

Do not use the meter if it is damaged. Before you use the meter, inspect the case. Pay 
particular attention to the insulation surrounding the connectors.

 • 

Inspect the test leads for damaged insulation or exposed metal. Check the test leads 
for continuity. Replace damaged test leads before you use the meter.

 • 

Do not use the meter if it operates abnormally. Protection may be impaired. When in 
doubt, have the meter serviced.

 • 

Do not operate the meter around explosive gas, vapor, or dust.

 • 

Do not apply more than the rated voltage, as marked on the meter, between terminals 
or between any terminal and earth ground.

 • 

Before use, verify the meter’s operation by measuring a known voltage.

 • 

When measuring current, turn off circuit power before connecting the meter in the 
circuit. Remember to place the meter in the circuit. Remember to place the meter in 
series with the circuit.

 • 

When servicing the meter, use only specified replacement parts.

 • 

Use with caution when working above 30V ac rms, 42V peak, or 60V dc. Such voltages 
pose a shock hazard.

 • 

When using the probes, keep your fingers behind the finger guards on the probes.

 • 

Connect the common test lead before you connect the live test lead. When you discon-
nect test leads, disconnect the live test lead first.

 • 

Remove the test leads from the meter before you open the case.

 • 

Do not operate the meter with the cover removed or loosened.

 • 

To avoid false readings, which could lead to possible electric shock or personal injury, 
replace the batteries as soon as the low battery indicator appears.

 • 

Do not use the test leads to measure the voltage which is more than 600V or the current 
which is more than 10A.

 • 

Remaining endangerment: When an input terminal is connected to dangerous live 
potentional it is to be noted than this potential at all other terminals can occur!

 • 

CATII-Measurement Category II is for measurements performed on circuits directly 
connected to low voltage installation. Do not use the meter for measurements within 
Measurement Categories III and IV.

CAUTION

To avoid possible damage to the meter or to the equipment under test, follow these 
guidelines:

 • 

Disconnect circuit power and discharge all high voltage capacitors before testing 
resistance, continuity, diodes, or capacitance.

 • 

Use the proper terminals, function, and range for your measurements.

 • 

Before measuring current, check the meter’s fuse and turn power OFF to the circuit 
before connecting the meter to the circuit.

 • 

Before rotating Function / Range switch to change functions, disconnect test leads 
from the circuit under test.

MAINTENANCE

 • 

Before opening the case, always disconnect the test leads from all live circuits.

 • 

To continue protection against fire, replace fuse only with the specified voltage and 
current ratings: F250mA/250V (Fast Blown) 5× 20mm

 • 

Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives 
or solvents.

GENERAL DESCRIPTION

This series instruments are compact 3 ½ digit digital multimeters for measuring DC and 
AC Voltage, DC Current, Resistance and testing Diode and Audible Continuity. Some of 
them also provide Temperature measurement or Battery test function, or can be used as a 
signal generator (see the following table). Full range overload protection and low battery 
indication are provided. They are ideal instruments for use in fields, laboratory, workshop, 
DIY and home applications.

Front Panel Description

  1.  DISPLAYS – 3 ½ digit LCD, Max. reading 1999
  2. FUNCTION / RANGE SWITCH – This switch is used to select the function and desired 

range as well as to turn ON/OFF the instrument. To extend the life of the battery, the 
switch should be set to the „OFF“position when the instrument is not in use.

  3.  „10A“ – Plug in connector for the red (positive) test lead for current (between 200mA 

and 10A) measurements.

  4. „VmAΩ“ JACK – Plug in connector for the red (positive) test lead for all voltage, resistence 

and current (up to 200mA)

  5.  „COM“ JACK – Plug in connector for the black (negative) test lead.

General Specifications

Maximum Display:  

 1999 counts ( 3 ½ digits) with automatic polarity indication

Indication Method:  

LCD display

Measuring Method:  

Dual-slope integration A/D converter system

Over range Indication:  

Only figure „1“ displayed on the LCD

Reading Rate:    

2–3 times/second (approximate)

Operating Temperature:  

0 °C–40 °C (32 °F–104 °F), 75 % R.H.

Storage Temperature:  

-10 °C–50 °C (14 °F–122 °F), 75 % R.H.

Power Supply:   

One 9-volt battery (NEDA1604, 6F22)

Low Battery Indication:  

” displayed on the LCD

Dimensions/Weight:  

138 × 70 × 28 (mm)/115 g (including one 9V battery)

Specifications

Accuracy is specified for a period of 1 year after calibration and at 18 °C–28 °C (64 °F–82 °F) 
with relative humidity up to 75 %. 
Accuracy specifications take the form of: 
+/- (% of R(Number of Lest Significant Digits)

DC Voltage

Range

Resolution

Accuracy

200 mV

100 µV

±(0,5 % + 5)

2000 mV

1 mV

±(0,8 % + 5)

20 V

10 mV

200 V

100 mV

600 V

1 V

±(1 % + 5)

AC Voltage

Range

Resolution

Accuracy

200 V

100 mV

±(1.2%+10)

600 V

1 V

Response: Average responding, calibrated in rms of a sine wave.
Frequency Range: 45 Hz ~ 450 Hz

GB

Summary of Contents for EM391

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Page 3: ...ent Recyclingofmaterialshelpstoprotectournaturalresources Youcangetmore information about recycling of this product from your municipal authority the nearest household waste processing company or the...

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Page 16: ...Odaberite mjerni raspon Ako unaprijed ne znate raspon namjestite najvi i raspon te ga tijekom mjerenja postepeno smanjujte 3 Priklju ite ispitne pipalice na ure aj ili krug gdje e se mjeriti izmjeni...

Page 17: ...te ju za novu bateriju propisanih dimenzija osigura F 250mA 250V AC 3 Nakon toga nametnite pokrov i stavite vijke Upute za odr avanje multimetra Upozorenje Netruditesemultimetarpopravljatiilinabilokoj...

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