Somogyi Elektronic SMA 19, Instruction Manual

SMA 19

Digital multimeter

EN 

GENERAL INFORMATION

This digital multimeter was designed with a view to comply with the safety 

requirements of standard IEC 61010-1. Complies with 600 V CAT IV and 1000 

V CAT III measurement categories and Category 2 contamination require-

ments. Before using this instrument, please read this instruction manual and 

observe the relevant safety precautions. CAT IV: Measurements on low volta-

ge power sources: For example, consumption meters, input cabinets, primary 

surge protection devices

CAT III: Measurements inside buildings or plants. For example, fixed equip

-

ment, distribution panel, cabling, bus bars, switches, surge protection distri-

bution box, etc.

Warning!

 These operating instructions contain the information and war-

nings required for the safe use and maintenance of the unit. Read and under-

stand the instructions for use before using the device. Failure to understand 

the instructions or observe the warnings can result in serious personal injury 

or property damage. For your safety, please use the probe cable included 

with the multimeter. Before use, please check that your multimeter is intact.

APPLIED SAFETY MARKING

Important safety presciptions in the user manual

Possibility of dangerous voltage presence

Grounding (COM)

Double grounding (Contact protection class II)

Alternating current / alternating voltage

Direct current / direct voltage

Fuse protected. Please replace according to the instructions for use.

PUSHBUTTONS:

SEL

     Switching between °C and °F measuring in TEMP position In the position 

of voltage or current measuring: ACV/DCV, ACA/DCA In   or   posi-

tion: selecting the diode, or beep sound on/off switch

Hz%

   In position of AC voltage or AC current measuring: Each push of the but-

ton shifts between ACV/Hz/% and ACA/Hz/% measuring mode.

 In frequency position: switching upon push of button between Hz or % 

measuring mode.

H

   Pressing this button will store the measured reading on the display. Pres-

sing the button again or changing functions will cause the instrument to 

clear the data. 

 Holding it for 3 seconds, switches the backlight on or off, backlight will turn 

off after 15 minutes individually

INPUT SOCKETS

COM (

)

common socket for all quantities to be mea-

sured and transistor testing (COM) (negative)

V,Ω,Hz %, 

, 

, 

, °C/°F

voltage, resistance, capacity, frequency, 

temperature, duty factor and diode tester 

input (positive)

µA, mA

current (0 - 600 mA), transistor tester (IN) 

input (positive)

10A

current (400 mA – 10 A) input (positive)

Contact free phase detection (NCV):

 Set the rotary switch to „NCV” position. 

If the multimeter’s front (marked by 1 in figure) is brought close to a live con

-

ductor, the multimeter’s light (marked by 2 in figure) and buzzer will activate.

Note: Do not rely solely on the instrument, as dangerous voltage may still be 

present in the conductor being tested even if there is no indication. Detection 

can depend on the type of socket, the thickness of insulation, RF interference 

and other factors, which can falsify the measurement.

DC voltage measurement (

) 

Connect the red probe cable to the  

 socket, and the black one to the 

“COM” socket. Set the dial to the DC voltage position. Connect the measure-

ment probes to the circuit to be measured. Note: The reading can be unstable, 

especially in the 400 mV measurement range, if the probe cable is not con-

nected to the circuit being measured.

Measurement limit

Resolution

 Accuracy (18 – 28°C)

600 mV

100 µV

±(0,5% + 3 dg.)

6 V

1 mV

60 V

10 mV

600 V

100 mV

1000 V

1 V

± (0,5  % + 3 dg.)

Input impedance: 

10 MΩ

Maximum input voltage: 

1000 V DC vagy 750 V AC RMS

Alterenating voltage measurement  (

)

Connect the red probe cable to the 

 socket, and the black one to the 

“COM” socket. Set the dial to the alternating voltage function. Connect the 

measuring probes to the circuit to be measured. Note: The reading can be 

unstable, especially in the 400 mV measurement range, if the probe cable is 

not connected to the circuit being measured.

Measurement limit

Resolution

 Accuracy (18 – 28°C)

6 V

1 mV

± (0,8% + 3 dg.)

60 V

10 mV

600 V

100 mV

750 V

1 V

± (0,8% + 3 dg.)

Input impedance/: 

10 MΩ

Maximum input voltage: 

1000 V DC or 750 V AC RMS

Measuring range: 

40 Hz - 400 Hz

Measurement of AC  (µA , mA , 10 A )

Connect the black probe cable to the “COM” socket. Connect the red probe 

cable and set the selector dial according to the current values to be measured:

Current to be 

measured

Red probe cable 

connection (socket)

Dial setting

0-4mA

µA mA

µA    

4-400mA

µA mA

mA    

0,4-10A

10A

A