Somogyi Elektronic SMA 19, Instruction Manual

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Use „SEL” pushbutton to set direct current ( ) function. Interrupt the circuit
whose current is to be measured then connect the probe to the points to be
measured.
Measurement limit Resolution Accuracy (18 – 28°C)
60 µA 0,01 µA
± (0,8% + 3 dg.)
600 µA 0,1 µA
6 mA 0,001 mA
60 mA 0,01 mA
600 mA 0,1 mA
10 A 10 mA ± (1,2% + 3 dg.)
Overload protection: FF 600 mA / 1000 V ,
in 10 A position: FF10A/1000 V
Maximum input current: 600 mA DC/AC ,
in 10 Amper position: 10 A DC/AC
When the measured current is bigger than 5 A, continuous measuring time
can not be longer than 10 seconds, and at least 1 minute has to be spent
between two measuring.
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
Use the „SEL” button to set alternating current ( ) function. Interrupt the
circuit whose current is to be measured then connect the probe to the points
to be measured.
Measuring limit Resolution Accuracy (18 – 28°C)
60 µA 0,01 µA
± (1% + 3 dg.)
600 µA 0,1 µA
6 mA 0,001 mA
60 mA 0,01 mA
600 mA 0,1 mA
10 A 10 mA ± (1,5% + 3 dg.)
Overload protection: FF 600 mA / 1000 V ,
in 10 Amper range: FF10A/1000V
Maximum input current: 600 mA DC/AC ,
in 10 Amper position: 10A DC/AC
When the measured current is greater than 5 A, duration of continuous
measuring should not be longer than 10 seconds, and at least 1 minute has
to be spent between two measuring.
Frequency response: 40Hz-1kHz True RMS
FREQUENCY MEASUREMENT
Connect the red probe cable to the socket, and the black one to the
“COM” socket. Set the dial to the „Hz%” function. Use the „Hz%” push button
to set the frequency (Hz) function. Connect the measurement probe to the
circuit to be measured.
Note: Frequency measurement only works with automatic measurement ran-
ge selection. Do not exceed the input voltage as this may damage the device.
Measuring limit Resolution Accuracy (18 – 28°C)
9,999 Hz 0,001 Hz
± (1,0% + 3 dg.)
99,99 Hz 0,01 Hz
999,9 Hz 0,1 Hz
9,999 kHz 0,001 kHz
99,99 kHz 0,01 kHz
999,9 kHz 0,1 kHz
9,999 MHz 0,001 MHz
Input voltage measuring limit: 200 mV - 10V[AC]
Over-voltage protection: 600V DC/AC
DIODE- AND INTERRUPTION TESTING
Diode testing: connect the red probe cable to socket, and the black
one to the “COM” socket (the red probe is for “+” polarity). Set the dial to
position. Use the „SEL” pushbutton to select the diode testing ( )
function. Connect the red probe cable to diode’s anode, and the black one to
its cathode. The display will show the diode’s approximate forward voltage. If
the connection is reversed, “OL” will appear in the display.
Interruption testing: a Connect the red probe cable to the socket, ,
and the black one to the “COM” socket (the red probe is for “+” polarity). Set
the dial to the position. Use the „SEL” pushbutton to select interruption
testing ( ) function. Touch the circuit to be measured with the probe cable.
If the circuit is connected to a power source, switch off the power source and
discharge the capacitors before starting measurement. Short-circuits (less
than 60 Ω) will be indicated by the built-in buzzer.
Function Meas. limit Resolution Measuring environment
0-3 V 0,001 V
Measuring current: approx. 1mA,
idle voltage: approx. 3,2 V, overload
protection: 600V DC/AC
600 Ω 0,1 Ω
idle voltage approx. 1V, overload pro-
tection: 250V[DC] or 250V[AC] RMS
CAPACITY MEASUREMENT: ( )
Connect the red probe cable to the socket, and the black one to the
“COM” socket. Set the dial to the position. Connect the measurement
probe to the circuit to be measured. If the capacitor to be measured is con-
nected to a circuit, switch off the power source and discharge the capacitors
before starting measurement. Note: Capacity measurement only works with
automatic measurement range selection. When performing measurements
please note that the larger the capacity (µF) being measured, the more time it
takes for the multimeter to take an accurate measurement.
Measuring limit Resolution Accuracy (18 – 28°C)
6 nF 0,001 nF ± (4,0 % + 30 dg).
60 nF 0,01 nF
± (4,0% + 3 dg.)
600 nF 0,1 nF
6 µF 1 nF
60 µF 10 nF
600 µF 100 nF
6 mF 1 µF
100 mF 0,01 mF ± (5,0% + 3 dg.)
Overload protection: 600 V DC/AC
RESISTANCE MEASUREMENT (Ω)
Connect the red probe cable to the socket, and the black one to the
“COM” socket. (The red probe cable is “+” polarity.) Set the dial to Ω position.
If the resistor to be measured is connected to a circuit, switch off the power
source and discharge the capacitors before starting measurement.
Measuring limit Resolution Accuracy (18 – 28°C)
600 Ω 0,1 Ω
± (4,0% + 3 dg.)
6 kΩ 1 Ω
60 kΩ 10 Ω
600 kΩ 100 Ω
6 MΩ 1 kΩ
60 MΩ 10 kΩ
100 mF 0,01 mF ± (5,0% + 3 dg.)
Open circuit voltage: 1 V
Over-voltage protection: 600 V DC/AC .
MEASUREMENT OF DUTY RATIO
Connect the red probe cable to the socket, and the black one to the
“COM” socket. Set the dial to „Hz%” function. Use the „Hz%” pushbutton to
set the duty ratio (%) function. Connect the measuring wire to the circuit to be