Mastech MS8216 User manual

User’s Manual
CAT II
600 V
CAT III
300 V
Pocket Digital Multimeter

CONTENTS 1. Safety information
This multimeter has been designed according to IEC-
1010 concerning electronic measuring instruments
with an overvoltage CAT II 600V and pollution 2.
Follow all safety and operating instructions to ensure
that the meter is used safely and is kept in good
operating condition.
To ensure safe operation, and in order to exploit to
the full functionality of the meter, please follow
the directions in this section carefully.
Warning
1.1 Preliminary
1.1.1 When using the meter, the user must observe all
normal safety rules concerning:
• Protection against the dangers of electrical current
• Protection of the meter against misuse
1.1.2 When the meter is delivered, check if it has been
damaged in transit.
1.1.3 When poor condition under harsh preservation or
shipping conditions caused, inspect and confirm
this meter without delay.
1.1.4 Test leads must be in good condition. Before using
verify that the insulation on test leads is not
damaged and/or the leads wire is not exposed.
1.1.5 Full compliance with safety standards can be
guaranteed only if used with test leads supplied.
If necessary, they must be replaced with the same
model or same electric ratings.
01
1. Safety information
1.1 Preliminary
1.2 During use
1.3 Symbols
1.4 Maintenance
2. Description
2.1 Names of components
2.2 Function and range selector
3. Specifications
3.1 General specifications
3.2 Electrical specifications
4. Operating instruction
4.1 Data hold
4.2 Relative transform
4.3 Hz/duty transform
4.4 Auto power off
4.5 Preparation for measurement
4.6 Measuring ac voltage
4.7 Measuring dc voltage
4.8 Measuring resistance
4.9 Measuring capacitance
4.10 Measuring frequency
4.11 Measuring duty
4.12 Testing diode
4.13 Continuity test
5. Maintenance
5.1 Battery replacement
5.2 Test leads replacement
5.3 Store of test leads
6. Accessories
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1.2 During use
1.2.1 Never exceed the protection limit values indicated
in specifications for each range of measurement.
1.2.2 When the meter is linked to a measurement circuit,
do not touch unused terminals.
1.2.3 Do not measure voltage if the voltage on the
terminals exceeds 600V above earth ground.
1.2.4 Always be careful when working with voltages
above 60V DC or 30V AC rms, keep fingers behind
the probe barriers while measuring.
1.2.5 Never connect the meter leads across a voltage
source while the function switch is in the current,
resistance, diode or continuity mode. Doing so
can damage the meter.
1.2.6 Before stir the transform switch to change
functions, disconnect test leads from the circuit
under test.
1.2.7 When carrying out measurements on TV or
switching power circuits always remember that
there may be high amplitude voltages pulses at
test points, which can damage the meter.
1.2.8 Never perform resistance measurements on live
circuits.
1.2.9 If any faults or abnormalities are observed, the
meter can not be used any more and it has to be
checked out.
1.2.10 Never use the meter unless the rear case is in
place and fastened fully.
1.2.11 Please do not store or use meter in areas
exposed to direct sunlight, high temperature,
humidity or condensation.
1.3 Symbols
Note-Important safety information, refer to the
instruction manual.
Earth (ground) TERMINAL
Caution, possibility of electric shock
Equipment protected throughout by double
insulation or reinforced insulation.
Application around and removal from UNINSULATED
HAZARDOUS LIVE conductors is permitted.
Direct current
Alternating current
CAT III: MEASUREMENT CATEGORY III is applicable to
test and measuring circuits connected to the distribution
part of the building's low-voltage MAINS installation.
CAT II: MEASUREMENT CATEGORY II is applicable to test
and measuring circuits connected directly to utilization points
(socket outlets and similar points) of the low-voltage MAINS
installation.
1.4 Maintenance
1.4.1 Please do not attempt to adjust or repair the
meter by removing the rear case while voltage is
being applied. A technician who fully understands
danger involved should only carry out such
actions.
1.4.2 Before opening the case of the meter, always
disconnect test leads from all sources of electric
current.
1.4.3 Do not use abrasives or solvents on the meter,
use a damp cloth and mild detergent only.
1.4.4 ALWAYS set the power switch to the OFF position
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when the meter is not in use.
1.4.5 If the meter is to be stored for a long period of
time, the batteries should be removed to prevent
damage to the unit.
2. Description
2.1 Names of components
1. LCD Display
2. Data HOLD Button (H-D)
3. Hz/Duty Transform Button (H/D)
4. Relative Transform Button (REL)
5. Transform Switch
6. Red Test Lead
7. Black Test Lead
8. Test Lead Store Space
9. Cover
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2.2 Function and range selector
- This meter is a portable professional measuring
instrument with perfect LCD.
- This meter has function of auto range and data hold.
- When using, it can show ranges engineering unit
enunciators measuring results.
- This meter has function of auto power off.
3. Specifications
Accuracy is specified for a period of year after calibration
and at 18°C to 28°C(64°F to 82°F) with relative humidity
to 75%.
3.1 General specifications
3.1.1 It includes 7 function with 29 ranges.
3.1.2 Auto ranges.
3.1.3 Overrange protection for all ranges.
3.1.4 Max. Voltage Between Terminals And Earth
Ground: 600V DC or rms AC
3.1.5 Operating Altitude: 2000 meters (7000 ft.)
maximum
3.1.6 Display: LCD
3.1.7 Max. Show Value: 3999 counts max
3.1.8 Polarity Indication: ‘-’indicates negative polarity.
3.1.9 Overrange Indication: Display ‘0L’ or ‘-0L’
3.1.10 Sampling Time: approx. 0.4 second
3.1.11 Unit showing: showing of function and
electrical capacity.
3.1.12 Auto power off time: 15 min.
3.1.13 Power Supply: 1.5V (LR44 battery) ×2
3.1.14 Low Battery Indication: ‘ ’ displayed
3.1.15 Temperature Factor: < 0.1×Accuracy /°C
3.1.16 Operating Temperature: 0°C to 40°C
(32°F to 104°F)
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3.1.17 Storage Temperature: -10°C to 50°C
(10°F to 122°F)
3.1.18 Dimension: 110×76×11mm
3.1.19 Weight: approximate 100g (including battery)
3.2 Electrical Specifications
Circumstance Temperature: 23±5°C
Relative Humidity: < 70%
3.2.1 Dc voltage
Range Resolution Accuracy
400mV 0.1mV
±(0.7% of rdg + 2digits)
4V
40V
400V
600V
1mV
10mV
100mV
1V
-Input Impedance: 10M
- Max. Input Voltage: 600V DC or rms AC
NOTE:
At the little voltage range, the meter will show unsteady
reading when test leads haven't reach the circuit, it's
normal because the meter is very sensitivity. When test
leads touch the circuit, you can get the true reading.
3.2.2 Ac voltage
Range Resolution Accuracy
±(0.7% of rdg + 2digits)
4V
40V
400V
600V
1mV
10mV
100mV
1V
-Input Impedance: 10M
- Max. Input Voltage: 600V DC or rms AC
- Frequency Range: 40 to 1kHz
- Response: Average, calibrated in rms of sine wave
NOTE:
At the little voltage range, the meter will show unsteady
reading when test leads haven't reach the circuit, it's
normal because the meter is very sensitivity. When test
leads touch the circuit, you can get the true reading.
3.2.3 Resistance
Range Resolution Accuracy
±(1.2% of rdg + 2digits)
400Ω
4kΩ
40kΩ
400kΩ
0.1Ω
1Ω
10Ω
100Ω
4MΩ
40MΩ
1kΩ
10kΩ±(2.0% of rdg + 5digits)
-Open Circuit Voltage: 0.25V
- Overload Protection: 250V DC or rms AC
3.2.4 Capacitance
Range Resolution Accuracy
±(3.0% of rdg + 3digits)
4nF
40nF
400nF
4μF
1pF
10pF
0.1nF
1nF
40μF
200μF
10nF
100nF
- Overload Protection: 250V DC or rms AC
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3.2.5 Frequency
Range Resolution Accuracy
±(2.0% of rdg + 5digits)
9.999Hz
99.99Hz
999.9Hz
9.999kHz
0.001Hz
0.01Hz
0.1Hz
1Hz
99.99kHz
199.9kHz
10Hz
100Hz
>200kHz
±(1.5% of rdg + 5digits)
±(1.5% of rdg + 5digits)
±(1.5% of rdg + 5digits)
±(2.0% of rdg + 5digits)
±(2.0% of rdg + 5digits)
Take it only as reference
- By Hz range:
Input Voltage range: 0.5V – 10V rms AC (Input voltage
must be enlarged with increasing frequency under
measurement)
Overload protection: 250V DC or rms AC
- By V range:
Input Voltage range: 0.5V – 600V rms AC (Input voltage
must be enlarged with increasing frequency under
measurement)
Input Impedance: 10M
Max. Input Voltage: 600V DC or rms AC
NOTE:
When measuring frequency, the range by Hz range is
larger than by Hz of Voltage range, but the value
measured beyond the range is just for reference.
3.2.6 Duty cycle
Range Resolution Accuracy
±3.0%
0.1~99.9% 0.01%
- By Hz range:
Input Voltage range: 0.5V – 10V rms AC (Input voltage
must be enlarged with increasing frequency under
measurement)
Overload protection: 250V DC or rms AC
Frequency Response: 0 ~ 200kHz
- By V range:
Input Voltage range: 0.5V – 600V rms AC (Input voltage
must be enlarged with increasing frequency under
measurement)
Input Impedance: 10M
Max. Input Voltage: 600V DC or rms AC
Frequency Response: 0 ~ 200kHz
NOTE:
When measuring frequency, the range by DUTY of Hz
range is larger than by DUTY of Voltage range.
3.2.7 Diode
Range Resolution Accuracy
Display: read approximate
forward voltage of diode
1mV
- Forward DC Current approximate 1mA Reversed DC
Voltage approximates 1.5V
- Overload Protection: 250V DC or rms AC
3.2.8 Continuity
Range Function
Built-in buzzer will sound, if resistance is
lower than 50Ω.
- Open circuit voltage approximate: 0.5V
- Overload Protection: 250V DC or rms AC
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4. Operating instruction
4.1 Data hold
If you need data hold when measuring, you can put on
“H-D”; it will hold the reading; if you put the button again,
data hold is not continue.
4.2 Relative transform
Put down the "REL." when measuring the AC voltage
range, DC voltage range, and capacitance range. Meter
will be transformed at relative measuring, the initial
display will show ”000”. Press the "REL" again, meter
will recover the normal working condition.
4.3 Hz/duty transform
Put down the "H/D." when measuring the Hz range.
Meter will be transformed at DUTY range. Press the
"H/D" again, meter will recover the Hz range.
When measuring the voltage range, put down the "H/D"
and change to the Hz range. The frequency of the signal
for the voltage is measured now.
Press the "H/D" again and change to the DUTY range.
The DUTY CYCLE of the signal for the voltage is
measured now. Press the "H/D" again, meter will be
back to the condition of the voltage measuring. The
range of voltage is locked under this condition. The
locking condition can be cancelled by rotating the
transform switch.
4.4 Auto power off
If no operation within fifteen minutes after power is on,
meter will auto power off with five short sounds and one
long.
After auto power off, if stir the transform switch or put
down any button of "H-D”, “REL”, “H/D”, meter will
recover the working condition.
4.5 Preparation for measurement
4.5.1 Stir the transform switch. If the battery voltage is
less than 2.4V, display will show “ ”, the battery
should be changed at this time.
4.5.2 The “ ” besides the input lead shows that the
input voltage or current should be less than specification
on the sticker of the meter to protect the inner circuit
from damaging.
4.5.3 Select a transform switch accordingly for the item
to be measured.
4.6 Measuring ac voltage
4.6.1 Set the transform switch at the AC V range position.
4.6.2 Connect test leads across the source or load under
measurement.
4.6.3 You can get reading from LCD.
NOTE:
1. “ ” means you can’t input the voltage which more
than 600V DC or 600V rms AC, it’s possible to show
higher voltage, but it’s may destroy the inner circuit.
2. Pay attention not to get an electric shock when
measuring high voltage.
4.7 Measuring dc voltage
4.7.1 Set the transform switch at the DC V range position.
4.7.2 Connect test leads across the source or load under
measurement.
4.7.3 You can get reading from LCD. The polarity of the
red lead connection will be indicated along with the
voltage value.
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NOTE:
1. “ ” means you can’t input the voltage which more
than 600V DC or 600V rms AC, it’s possible to show
higher voltage, but it’s may destroy the inner circuit.
2. Pay attention not to get an electric shock when
measuring high voltage.
4.8 Measuring resistance
4.8.1 Set the transform switch at the desired range.
4.8.2 Connect test leads across the resistance under
measurement.
4.8.3 You can get reading from LCD.
NOTE:
1.For measuring resistance above 1M, the meter may
take a few seconds to get stable reading.
2. When the input is not connected, i.e. at open circuit,
the figure ‘1’ will be displayed for the overrange
condition.
3. When checking in-circuit resistance, be sure the
circuit under test has all power removed and that all
capacitors have been discharged fully.
4.9 Measuring capacitance
4.9.1 Set the transform switch at the range position.
4.9.2 Connect test leads across the capacitance under
measurement.
4.9.3 You can get reading from LCD.
To avoid electric shock, be sure the capacitors have been
discharged fully before measuring the capacitance of a
capacitor.
Warning
NOTE:
1. It takes certain time (200μF range 30 seconds) to
steady the reading when measuring high capacity.
2. When measuring low capacity range under the open
circuit, put down the “REL” to make the display show
“000”, then you might get reading from it.
4.10 Measuring frequency
4.10.1 Set the transform switch at the Hz range position
(or at the ACV range and the DCV range, put down the
“H/D” to transform to Hz measuring position).
4.10.2 Connect test leads across the source or load
under measurement.
4.10.3 You can get reading from LCD.
4.11 Measuring duty cycle
4.11.1 Set the transform switch at the Hz range position
(or at the ACV range and the DCV range, put down the
“H/D” to transform to DUTY measuring position).
4.11.2 Put down the“H/D” Transform the meter to DUTY
range.
4.11.3 Connect test leads across the source or load
under measurement.
4.11.4 You can get reading from LCD.
4.12 Testing diode
4.12.1 Set the transform switch at the range position.
4.12.2 Connect the red lead to the anode, the black lead
to the cathode of the diode under testing.
4.12.3 You can get reading from LCD.
NOTE:
1.The meter will show the approximate forward voltage
drop of the diode.
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2.If the lead connection is reversed, only figure‘0L’will
be displayed.
4.13 Continuity test
4.13.1 Set the transform switch at the range position.
4.13.2 Connect test leads across two points of the
circuit under testing.
4.13.3 If continuity exists（i.e., resistance less than
about 50Ω）, built-in buzzer will sound.
4.13.4 You can get reading from LCD.
NOTE:
If the input open circuit(or the circuit resistance
measured is higher than 400Ω), then the figure‘0L’ will
be displayed.
Replace test leads if leads become damaged or worn.
Use meet EN 61010-031 standard, rated CAT III 600V, or
better test leads.
WARNING
5.1 Replacing The Batteries
WARNING
To avoid electric shock, make sure that the test
leads have been clearly move away from the
circuit under measurement before opening the
battery cover of the meter.
5.1.1 If the sign “ ” appears, it means that the
batteries should be replaced.
5.1.2 Loosen the fixing screw of the battery cover and
remove it.
5.1.3 Replace the exhausted batteries with new ones.
Note:
Do not reverse the polarity of the batteries.
WARNING
Do not mix old and new batteries. Do not mix
alkaline, standard (carbon-zinc), or rechargeable
(ni-cad, ni-mh, etc) batteries.
5.2 Replacing Test Leads
5. Maintenance
5.1.4 Put the battery cover back and fix it again to its
origin form.
5.3 Store of test leads
When placing the teat leads in the storing space, first
roll its wire 3 times, then put it into the store space as
illustrated.
6. Accessories
Battery: 1.5V LR44 2Pcs
Operating Manual 1Pcs
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