23Smkll
56
78
G. Frequency (Hz)
±(3.0%rdg+150dgt) 250V DC/AC
effective value
20KHz
200KHz
1Hz
10Hz
Range Resolution Accuracy Overload protection
Input sensitivity: 2V effective value.
Overload protection: 36V DC or AC effective value. (within 10 sec)
H. Diode and continuity performance test.
the positive DC
current is approx.
1mA,negative
voltage is approx
3V
open voltage is
approx 3V
Positive voltage
drop of diode
Buzzer sounds,the resista-
nce is less than(70±20)Ω
36V DC/AC
effective
value
Range Resolution threshold Overload
protection
Overload protection: 250V DC or AC effective value.
CAUTION: Do not input voltage at this range!
I. Temperature (℃)
Range Resolution Accuracy
(-20～1000)℃0.1℃±(0.8%rdg+40dgt)≤400℃
±(1.5%rdg+150dgt)≥400℃
K-type Thermoelement (banana plug type, temperature: -20 ～250℃)
4. OPERATION
4-1. P anel description
1. LCD:display the measuring value.
2. POWER: turn on/off the power.
3. : turn on/off the back light.
4. Continuity testing indicator.
5. HOLD key: press it ,the presently
measured value is held on LCD and
"H"symbol displays. press it again ,"H"
symbol disappears, and the meter is
exited the holding mode.
6. knob: to select measuring functio and range.
7. Voltage, resistance, frequency and diode jack.
8. GND, the anode jack of test capacitance and temperature.
9. Jack for measuring current 20A.
10. Jack for the cathode of capacitance, temperature and current
lower than 200mA.
4-2. DCV measurement
1. Insert the black test lead into the COM”jack and the red one into the “
“ ” jack.
2. Set the bnob to a proper DCV range, and connect the leads crossly to
the electric circuit under test, LCD displays polarity and voltage under
test connected by the red test lead.
NOTE:
①.Firstly users should select the knob to the highest range, if users
had no idea about the range of voltage under test, and then select
the proper range based on displaying value.
②.If LCD lead displays “1” it means meter is over the max. Value of
range, thus should select the knob to a higher range.
③. Do not input a voltage over DC 1000V.
④. Be careful while measuring a high voltage. don't touch the high circuit.
4-3. ACV measurement
1. Insert the black test lead into the jack and the red one into the “COM”
jack.“ ”
2. Select the knob to a proper ACV range, and then connect the leads
crossly to the electric circuit under test.
NOTE:
①. Firstly users should select the knob to the highest range, if users had
no idea about the range of voltage under test, and then select the
proper range based on displaying value.
②. If LCD displays it means meter is over the max, value of range, “1”
thus should set the knob to a higher range.
③. Do not input a voltage over 750V effective.
④. Be careful while measuring a high voltage, touch the voltage don't
circuit.
4-4. DCA Measurement
1. Insert the black test lead into the jack and the red one into the“COM” “mA”
jack (the Max 200mA) . or to (the max 20A).“20A”
2. Set the knob to a proper DCA range, and connect the leads crossly to the
electric circuit under test; LCD displays polarity and current under test
connected by the red test lead.
NOTE:
①. Firstly users should selectt the knob to the highest range, if users had
no idea about the range of current under test, and then select the proper
range based on displaying value.If the LCD displays means the “1”
current is over range. thus should select the knob to g higher range.
②. Max input current is 200mA or 20A (subject to where the red test insert
to), too large current will damage the fuse.
4-5. ACA Measurement
1. Insert the black test lead into the jack and the red one into the “COM” “mA”
jack (the Max 200mA) or to (the Max 20A).“20A”
2. Selectt the knob to a proper ACA range, and connect the leads crossly to
the electric circuit under test.
NOTE:
①. Firstly users should set the knob to the highest range, if users had no
idea about the range of current under test, and then select the proper
range based on displaying value.If the LCD displays it means the “1”
current is over range. thus should select the knob to g higher range..
②. Max input current is 200mA or 20A (subject to where the red test lead
insert to), too large current will damage the fuse.
4-6. Resistance Measurement
1. Insert the black test lead into the jack and the red one into the “COM”
“ ”jack.
2. Set the knob to a proper resistance range, and connect the test leads
crossly to the resistor under test.
NOTE:
①. The LCD displas while the resistance is over the selected “1”
range. The knob should be adjusted to higher range. When
measuring value is over 1MΩ, the reading will take a few seconds
to be stable. It is normal for high resistance measuring.
②. When input terminal is in open circuit, overload displays.
③. When measuring in line resistor, be sure that the power is off
and all capacitors are released completely.
④. Do not input any voltage at resistance range. even the meter
has voltage protection functions at this range!
4-7. Capacitance Measurement
1. Set the knob to proper capacitance range, and insert the measuring
accessories or test leads into and jack.“COM” “mA”
terminal is for positive pole “COM” “ ”
terminal is “mA”
2. Connect test leads with the two points of capacitor, be wary of
polarity if necessary.
NOTE:
①.
If the capacitance under tested is over the max, value of selected
range, LCD displays thus should set the knob to a higher “1”
range.
②. It is norminal that there is a remained value on LCD before capa-
citance measurement, and it doesn't affect the measurement.
③. When measuring at large capacitance range, if capacitor is crept
bably or broken, LCD displays some unstable value.
④. Release the capacitor completely before measuring capacitance.
⑤. Unit: 1uF=1000pF,1nF=1000pF
4-8. Diode and Continuity performance test
1.Insert the black test lead into the jack and the red one into“COM”
the “ ”jack (the polarity of red lead is “＋”
2. Set the knob fo " "range.
3. Forward test: the red test lead connect to the positive of the tested
the red test lead connect to diode positive polarity and black test
lead connect to diode cathode polarity ,the reading is the approx
Value of diode forward volt drop.
4. Reverse test: connect test leads with the diode under tested,the red
test lead connect to diode cathode polarity, and the black test lead
connect to diode posotive polarity, ill be displayed on LCD.“1”w
5. Insert test leads to two points of tested circuit, if the inner buzzer
sounds and turn on light, the resistance is less than (70±20)Ω.
