Mastech MS8216 Manual de usuario

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.

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

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)

40V

400V

600V

1mV

10mV

100mV

-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)

40V

400V

600V

1mV

10mV

100mV

-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)

±(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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