Test Equipment Depot - 800.517.8431
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MT-5211
3-1/2 Digital LCR Multimeter
User’s Manual
st
Edition,
1
©2014 Copyright by Prokit’s Industries Co., Ltd.
OPERATION MANUAL
SUMMARIZE
The instrument is a stable digital multimeter driven by battery. It comes with
28mm high LCD to make reading more clear. Backlight display and overload
protection make it convenient to use .This instrument features multi functions
for measuring DCV, ACV, DCA,ACA, resistance, capacitance, inductance,
diode, transistor, continuity , temperature and frequency. The instrument
utilizes a dual-integral A/D converter as a key feature and is an excellent tool.
It is portable and ideal for lab, factory and field use.
FETY NOTE
SA
The meter meets the standards of IEC1010.
Please read the operation manual carefully before operation.
1． Do not input anything over a range limit.
2． Voltage below 36V is safe. To avoid electric shock, check whether the
test leads are connected correctly, whether the insulation is good when
measuring over 36DCV or 25ACV.
3． Remove the test leads when changing function and range.
4． To select correct function and range, make sure the range limit setting
is correct. Start with higher limits and work down to correct level if
uncertain.
5． Do not operate the meter if battery case and back cover is not properly
fixed.
6． Do not input voltage when measuring resistance.
7． Remove test leads from test point and turn off the power before
replacing battery and fuse.
8． SAFETY SYMBOLS
“
“
“
“
ARACTERISTIC
CH
1 GENERAL
1.1 Display: LCD displaying.
1.2 Max. displaying: 1999（3 1/2digit）auto polarity indication.
1.3 Measuring method: dual slope A/D conversion.
1.4 Sampling rate: approx. 3 times/second.
1.5 Over range indication: the MSD displays “OL” or “-OL”.
1.6 Low battery indication: “
1.7 Operation environment: （0～40）℃，R.H.<80% .
1.8 Power：One
1.9 Size: 189×97.5×35mm
1.10 Weight: approx. 390g（not includes battery）.
1.11 Accessories: operation manual, holster, test leads (20A),
”DANGEROUS VOLTAGE EXISTS，
” GND，“ ”DUAL INSULATION
”THE OPERATOR MUST REFER TO THE MANUAL ，
”LOW BATTERY
” appears.
9V 6F22 battery
Thermocouple (Banana type), transistor test socket.
1
2 TECHNICAL
CHARACTERISTIC
2.1 Accuracy:±(a%× rdg＋d) at (23±5)℃，R.H.<75%，one year guaranteed
from the production date.
2.2 TECHNICAL DATA
2.2.1 DCV
RANGE ACCURACY RESOLUTION
200mV 100uV
2V 1mV
20V 10mV
200V
±(0.5%+3)
100mV
1000V ±(1.0%+5) 1V
Input resistance: All ranges: 10 MΩ
Overload protection: 250V DV or AC peak value at 200mV
range.1000V DC or AC peak value at other ranges.
2.2.2 ACV
Range Accuracy Resolution
200mV ±(1.2%+3) 100uV
2V 1mV
20V 10mV
200V
±(0.8%+5)
100mV
750V ±(1.2%+5) 1V
Input impedance：All ranges 10MΩ
Overload protection：250V DC or AC peak value at 200mV ,
750V DC or AC peak value at other ranges.
Frequency response: (40-400) Hz for range 200V;
(40-100) Hz for range 750V;
Display: Sine wave RMS (AVG value response).
2.2.3 DCA
RANGE ACCURACY RESOLUTION
2mA 1uA
20mA
±(0.8%+3)
10uA
200mA ±(1.2%+4) 100uA
20A ±(2.0%+5) 10mA
Max. Input volt drop: 200mV;
Max. input current: 20A（the test time should be within 10
seconds）
Overload protection: 0.2A/250V fast-blow fuse, 20A/250V
quick-action fuse for range 20A.
2
2.2.4 ACA
Max measuring voltage drop：200mV.
Max Input current: 20A (less than 10 seconds).
Overload protection：0.2A/250V fast-blow fuse, 20A/250V
quick-action fuse for range 20A.
Frequency response: 40Hz-200Hz.
Display: Sine wave RMS (AVG value response).
2.2.5 RESISTANCE（Ω）
RANGE ACCURACY RESOLUTION
200Ω ±(0.8%+5) 0.1Ω
2KΩ 1Ω
20kΩ 10Ω
200kΩ 100Ω
2MΩ
20MΩ ±(1.0%+15) 10kΩ
2000MΩ
Open voltage: less than 3V.
Overload protection: 250V DC or AC peak value.
NOTE:
1. At 200Ω range, the test leads should be short-circuited, and
measure the lead to lead resistance, then, subtract from the
real measurement.
2. It is normal to display 10MΩ when the test leads shorted in
range 2000MΩ, it will not effect the accuracy and shall be
subtracted from the value measured. For example: The object
resistance is 1000MΩ, the reading value is 1010MΩ, then the
correct value shall be 1010-10=1000MΩ
3. Lagged display of value is normal when measuring
resistance higher than 1MΩ. Please wait until the display is
stable.
RANGE
2mA 1uA
20mA
200mA ±(2.0%+5) 100uA
20A ±(3.0%+10) 10mA
ACCURACY RESOLUTION
±(1.0%+5)
±(0.8%+3)
±(5.0%(reading-
10)+20)
10uA
1KΩ
1MΩ
3
2.2.6 CAPA
CITANCE (C)
RANGE ACCURACY RESOLUTION
20nF 10pF
200nF 100pF
2uF 1nF
20uF
±(2.5%+20)
10nF
200uF ±(5.0%+5) 100nF
Testing frequency: 100Hz
Overload protection: 36V DC or AC peak value
NDUCTANCE (L)
2.2.7 I
RANGE ACCURACY RESOLUTION
2mH 1uH
20mH 10uH
200mH 100uH
±(2.5%+20)
2H 1mH
20H
Testing frequency: 100Hz
Overload protection: 36V DC or AC peak value
2.2.8 TEMPERAT
URE (T)
10mH
RANGE ACCURACY RESOLUTION
(-20~1000)℃ ±(1.0%+4)<400℃
±(1.5%+15)≧400℃
Banana type Thermocouple.
2.2.9 FREQUENCY
(F)
RANGE ACCURACY RESOLUTION
2KHz 1Hz
20KHz 10Hz
200kHz 100Hz
2000kHz 1KHz
10MHz
Input senility: higher than 3.5VPp-p
Overload protection: 250V DC or AC peak value(less than 10
seconds)
2.2.10
DIODE AND CONTINUITY TEST
±(1.0%+10)
10KHz
Range Displaying value Test condition
The positive DC
Positive voltage
drop of diode
Buzzer sounds ,
the resistance is
less than(70±20)Ω
current is approx.
1mA，negative voltage
is approx. 3V
open voltage is
approx. 3V
4
1℃
Overload protec
Warning: DO NOT input any voltage at this range for safety!
2.2.11 TRANSIST
tion: 250V DC or AC peak value
OR hFE data TEST
Range Displaying value Test condition
hFE
NPN or PNP
0~1000
The base electrode
current is approx
10uA, and Vce is
approx 3V
3 OPERA
TION
3.1 Front panel description
3.1.1 LCD: display the measured
value.
3.1.2 Powe
3.1.3 HOLD: Pressing this key for hold
3.1.4 B/L key: turn on/off hold
3.1.5 DC/AC: select DC/ AC mode
3.1.6 Range knob: selecting
3.1.7 GND. ground, “+” input jack of
3.1.8 “+” pole jack for current lower than 200mA; “-“cathode input for
3.1.9 20A current test jack.
3.1.10 “+” pole jack of voltage, resistance and frequency.
3.2 VOLT
3.2.1 Insert the black test lead to “COM” jack, the red one to V/Ω/Hz
3.2.2 Set the range knob to “V” range, If the measured voltage is
3.2.3 Press DC/AC key to select DC or AC measuring mode.
3.2.4 Apply the test leads to the test point the LCD displays the
NOTE:
a. If LCD displays “OL”, it means over range, set the range knob to
r key: turn on/off the power.
maximum measuring result. LCD
show "PH” icon. Press again this
key turn off data hold and “PH”
icon disappear.
backlight.
measuring function and range.
capacitance (Cx), inductance
(Lx), transistor and temperature.
capacitance (Cx), inductance(Lx), transistor and temperature.
AGE MEASUREMENT
jack.
unsure beforehand, set the range knob to the highest range,
then reduce it gradually until get the highest resolutions
readings.
measured voltage value.
a higher range.
b. Do not input a voltage over 1000V DCA or 750V ACV, the test
5
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