Commercial Electric MS8332C User manual

MS8332C
730 696

Indicates important safety information
3
Equipment protected throughout by double insulation or reinforced
insulation.
(MEASUREMENT CATEGORY III) is applicable to test and measuring
circuits connected to the distribution part of the building’s low-voltage
MAINS installation.
Fuse
AC (Alternating Current)
DC (Direct Current)
AC or DC (alternating current or direct current)
Diode
Continuity buzzer
Auto range
There is not enough battery power for sufficient operation
2
This digital multimeter is designed and manufactured according to safety requirements
of EN 61010-1:2010, EN 61010-2-030, EN 61010-2-033, EN 61010-031 on electronic
measuring instrument and hand-helddigital multipurpose meter. This meter conforms
to UL STD.61010-1,61010-2-030,61010-2-033, Certified to CSA STD.C22.2 NO.61010-1,
61010-2-030, IEC STD61010-2-033. The product meets with the requirements of 600V
CAT III and pollution degree 2.
The meter can be used for measuring DC voltage, AC voltage, resistance, diode,
buzzer, continuity test, DC current, and AC current. The unique non-contact AC voltage
detection feature of this multimeter and the full scale AC 220V protection design allows
for safe operation.
This series of meters can be widely used for schools, labs, research institutes,
enterprises, and factories. Please read this manual carefully and pay attention to
related safe working standards before using this meter. Protection provided by the
instrument will be impaired if used in a manner not specified by the manufacturer.
PRELIMINARY PRECAUTIONS
SYMBOLS
2
2
6
7
11
18
18
19
19
6
FCC Compliance Statement
WARNING: When using the meter, the user
must observe all normal safety rules
concerning the protection against the
dangers of electrical current and
protection of the meter against misuse.
WARNING: When the meter is delivered,
check that it has not been damaged in
transit.
Conforms to UL STD. 61010-1, 61010-2-030 and 61010-031
WARNING: BE EXTREMELY CAREFUL IN THE USE OF THIS METER. Improper
use of this device can result in electric shock or destroy the meter. Follow
all safeguards suggested in this manual and the normal safety precautions
used in working with electrical circuits. Do not service this device if you are
not qualified to do so. To ensure safe operation, and in order to exploit to
the full the functionality of the meter, please follow the directions in this
section carefully.

76
Warranty
For one year from the date of purchase, this product is warranted against any defects
in material or workmanship. This warranty is void if this product is ever used while
providing commercial services or if rented to another person. Contact the Customer
Service Team at 1-877-527-0313 or visit www.homedepot.com.
WARRANTY: 12 months
PACKAGE CONTENTS
Pre-Operation
Part Name Quantity
A
B
Multimeter
Black test lead
CRed test lead
Non-contact AC Voltage
Indicator Light
LCD Display
Alerts you to live voltages to ensure safe
operation of this meter.
Displays the measurement result.
D
E
1
1
1
A
I
B
D
E
F
G
H
C
FCC Compliance Statement
Press the key to hold the data， press the
key 2 seconds to open the backlight．
Hold/Backlight Key
F
Part Name Description
PRODUCT DESCRIPTION

98
Pre-Operation (continued)
PRODUCT SPECIFICATIONS
Pre-Operation (continued)
Component Specification
Automatic Measuring Range DMM, full range is 3999 counting
Overload Protection Full range protection
Altitude Up to 2000 meters
Battery 2x1 5V AAA batteries
Auto power-off time 30 minutes
Data Hold function
Safety Class EN61010-1, CAT III 600V
Over range indication LCD displays “OL”
Ambient Temperature 23±5°C Relative Humidity: <75%
Operating environment 0°C - 40°C (32°F - 104°F), <80% relative
humidity and 10°C non-condensing
Storage temperature -10°C - 50°C (14°F - 122°F), <70% relative
humidity, battery removed
Size
Weight
116 x 61 x 38 5 mm
Approx.
.
Approx.
.
190 g
DC VOLTAGE SPECIFICATIONS
Measuring Range Resolution
400mV
Accuracy
0.1mV
4V 1mV
40V 10mV
400V 100mV
±(0.5% of rdg + 3 digits)
600V 1V ±(0.8% of rdg + 5 digits)
Additional specifications:
□ Input Impedance: 10MΩ
□ Maximum Input Voltage: 600V DC
AC VOLTAGE SPECIFICATIONS
Used to select functions and desired ranges.
Select Switch
Switching key between frequency and duty
cycle, it is used for switching Hz and % at
voltage range and current range.
Hz% Switching Key
H
I
Measuring Range Resolution Accuracy
4V 1mV
40V 10mV
400V 100mV
±(0.8% of rdg + 3 digits)
600V 1V ±(1.0% of rdg + 5 digits)
Additional specifications:
□ Input Impedance: 10MΩ
□ Frequency Range: 40 - 400Hz
□ Response: Average response (calibrated in rms of sine wave)
□ Maximum Input Voltage: 600V rms AC
DC CURRENT SPECIFICATIONS
Measuring Range Resolution Accuracy
400uA 0.1uA
4000uA
40mA ±(1.8% of rdg + 5 digits)
400mA
1uA
10uA
100uA
Additional Specifications:
□ Max. Current: 400mA
□ Overload Protection: mA measuring range: FF400mA/600V fuse
AC CURRENT SPECIFICATIONS
Measuring Range Resolution Accuracy
400uA 0.1uA
4000uA
40mA ±(2．0% of rdg + 8 digits)
400mA
1uA
10uA
100uA
The voltage current range is used for
switching AC/DC mode, the resistance range
is used for switching mode.
Function Selection Key
G
CAP

400nF 0.1nF ±(5.0% of rdg + 15 digits)
4uF
40uF
100uF
1nF
10nF
100nF
±(5.0% of rdg + 25 digits)
Additional Specifications
□ Overload Protection: 250V DC or rms AC
FREQUENCY SPECIFICATIONS
Measuring Range Accuracy
1Hz – 5MHz ±(1.5% of rdg + 15 digits)
DUTY CYCLE
Measuring Range Accuracy
0.5-99.9% ±(2.0% of rdg + 5 digits)
BATTERY TEST
Measuring Range Accuracy
1.5V ±(2.0% of rdg + 20 digits)
9V
BEFORE YOU TAKE A MEASUREMENT
Operation
1110
Pre-Operation (continued)
Additional Specifications:
□ Max. Current: 400mA
□ Overload Protection: mA measuring range: FF400mA/600V fuse
Additional Specifications:
□ Open Circuit Voltage: Diode is approximately 1.5V, buzzer is approximately
0.5V
□ Overload Protection: 250V DC or rms AC
CAPACITANCE SPECIFICATIONS
Pre-Operation (continued)
Measuring Range Resolution Accuracy
4nF 0.001nF
40nF 0.01nF
±(5.0% of rdg + 0.6 digits)
±(5.0% of rdg + 30 digits)
□ Frequency Range: 40Hz – 400Hz
□ Response: Average, calibrated in rms of sine wave
RESISTANCE SPECIFICATIONS
Measuring Range Resolution Accuracy
400Ω
±(1．0% of rdg + 3 digits)
4kΩ
40kΩ
400kΩ
4MΩ
40MΩ
1KΩ
10KΩ
100Ω
10Ω
1Ω
0．1Ω
±(1．2% of rdg + 15 digits)
Additional Specifications:
□ Maximum Open Circuit Voltage: 0.25V
□ Overload Protection: 250V DC or rms AC
DIODE AND CONTINUITY SPECIFICATIONS
Measuring Range Function
Display shows approximate forward voltage of diode.
Built-in buzzer sounds if resistance is lower than 50±20Ω.

1514
Operation (continued)
Measuring diode
Operation (continued)
3
CAUTION: To avoid the meter or measured
equipment from being damaged, cut off all
power supply of measured circuits and
discharge all high voltage capacitors
before measuring diode.
□ Turn the rotary switch to the
position (1).
□ Press the FUNC key (2) and select the
measuring range.
□ Separately connect the black and read
test leads to the negative pole and
positive pole of the measured diode.
□ The meter displays the forward bias value
of the measured diode. If the poles of the
test leads are connected inversely, the
meter will display “OL”.
For on-line measuring diode, the
meter displays the forward voltage
drop at forward measurement; the
reverse measurement depends on
the values of other elements
connected in parallel at both ends
of diode.
Measuring continuity
4
CAUTION: To avoid the meter or measured
equipment from being damaged, cut off all
power supply of measured circuits and
discharge all high voltage capacitors before
continuity measurement.
□Turn the rotary switch to the
position (1).
□Press the FUNC key (2) and select the
measuring range.
□Separately connect the two ends of the
test leads to the end ends of the
measured part and circuit.
□The meter displays the approximate
resistance value between measured
points. Here if the resistance value
between measured points is less than
50±20 Ω, the buzzer will make a sound.

Measuring AC and DC current
7
WARNING: To avoid damage to the meter or
injury if the fuse blows, never attempt an
in-circuit current measurement where the
open-circuit potential to earth (ground) is
greater than 250V.
The DC current range is 400uA, 4.000mA,
40.00mA, and 400.0mA .The AC current
range is 400uA, 4.000mA, 40.00mA,
and 400.0mA.
NOTE: Connect the measuring current of
the meter in series, not connected in
parallel. This prevents damage to the
meter or endangering personal safety.
□Cut off the power of the measured circuit.
Discharge all high voltage capacitance on
the measured circuit.
□Turn the rotary switch to the mA or uA
position (1). When the measured current
is less than 400uA, select the uA position.
When the measured current is
4mA~400mA, select the mA position.
□Disconnect the circuit under test. Connect
the black test lead to the end of dis
connected circuit under test (with lower
voltage). Connect the red test lead to the
other end of the disconnected circuit
under test (with higher voltage).
□Switch on the power of the circuit, and then
read the reading displayed on the LCD. If the
display only displays “OL”, it indicates that
the input exceeds the selected range. Move
the rotary dial to a higher range.
□Cut off the power to the measured circuit.
Discharge all capacitances, take off the
test leads and recover the circuit.
When measuring DC current, if the test
leads are reversely connected to the
circuit , the display will change into
negative, but not affect measuring
accuracy.
1716
Operation (continued)
Measuring capacitance
Operation (continued)
5
CAUTION: To avoid the meter or measured
equipment from being damaged, cut off all
power supply of measured circuits and
discharge all high voltage capacitors before
on/off measurement.
The capacitance ranges of the meter are
4.000nF, 40.00nF, 400.0nF, 4.000uF,
40.00uF, 100.0uF.
□Turn the rotary switch to the
position (1).
□Press the FUNC key (2) and select the
CAP measuring range.
□Apply the two ends of the test leads to
measure the two pins of the capacitance
under test and read the measured value
on the LCD.
NOTE: The meter will take some time to
stabilize the reading when the capacitance
is high. A small capacitance with less than
10nF subtracts from the distribution
capacitance of the meter and lead (namely
displayed base number) when measuring.
Measuring frequency and duty cycle
6
□Turn the rotary switch to the
position (1).
□Press the Hz% key (2). For frequency,
select the Hz range. For duty cycle,
select the % range.
□Apply the two ends of the test leads to
measure the frequency or duty cycle
value of the circuit under test.
□Read the value that displays on the LCD.