Mastech MS8212A Manual de usuario

MS8212A

Pen-type Digital

Multimeter Manual

CAT III

600V

CONTENTS CONTENTS

1. .................Safety Information......... .......1

3. Specifications.................. .....7............

1.1 Preparing for use ........ ..........1....................

1.2 During Use........ ..............................2....

1.3 Safety Symbols ........ ........ ..3.................... ..

1.4 Maintenance ....... ............................4....

2. Description......... .......4...........................

2.1 Front Panel .................. ...........5............

2.2 Buttons and Functions . .... ..... . ................6

3.1 General specifications ........... ...........7.....

3.2 Technical Specifications. . . .............8. .... ....

4. Using the Meter................. ...11............

4.1 Reading Hold. ..... ..................... .... .......11

4.2 Max Hold. .... ..... . ................................11

4.3 Function Button ......... .... .......11..... .........

4.4 Manual Range . .... ..... . .........................11

4.5 Auto Power Off. .... ..... . ........................11

4.6 Preparing for Measurement.. .......12..........

4.7 DC Voltage. . ..............................12.... ....

4.8 AC Voltage ........ .... .. .....14..... ... .............

4.9 Resistance. . ..............................15.... ....

4.10 Diode Test . . .............................16.... ....

4.11 Continuity.. . ......17.......... .....................

4.12 DC Current .... ..... .............................18

4.13 AC Current........ .... .. .....19..... ... ............

4.14 Logic Test.. .. ..... . ..............................19

4.15 Non-Contact Voltage (NCV) .................20

5. Maintenance................. .. .21............. ...

5.2 Replacing the Test Lead

(or alligator clip) .......... ... .......21..... .........

5.1 Replacing the Batteries. ..... ...................21

6. Accessories ........... ..... .. .. ............. ... 22

01 02

1.Safety Information

To reduce the risk of fire, electrical shock, product

damage or personal injury, please follow the

safety instructions described in the user manual.

read the user’s manual before using the meter. If

the equipment is used in a manner not specified

by the manufacturer, the protection provided by

the equipment may be impaired.

WARNING

This meter is designed and manufactured according to safety

requirements of EN61010-1, EN61010-2-030, EN61010-2-033,

EN61010-031 concerning electronic measuring instruments

with a measurement CAT III 600V and pollution degree 2 and

safety requirements for electrical measurement and test.

Follow all safety instructions to ensure safe use of the

instrument.

Following these guidelines will yield many years of satisfactory

service.

1.1 Preparing for use

1.1.1During use, observe all standard safety rules:

-Use protection to prevent electric shock.

-Do not misuse the instrument.

1.1.2 Check the meter to see if there was any damage

during transit.

1.1.3 Check test leads for cracks or breaks in the

insulation on the wires.

1.1.4 If the test leads need to be replaced, meter’s safety

can only be guaranteed with similar spec leads.

1.2 During Use

1.2.1 Always make sure the rotary switch is at the

correct function and range.

1.2.2 Do not exceed the protection limit values indicated

for each function

1.2.3 Do not touch test lead tips while connected to a

measurement circuit

1.2.4 In manual range if the value to be measured is

unknown, select the highest range first and lower

as needed.

1.2.5 Do not measure voltages that may exceed 600V

between the terminals and ground.

1.2.6 Always be careful when working with voltages

above 60V DC or 30V AC RMS. Keep fingers

behind the probe barriers while measuring.

1.2.7 Never connect the meter leads across a voltage

source while the rotary switch is in the resistance,

diode or continuity mode. Doing so can damage

the meter.

1.2.8 Do not perform resistance, diode and continuity

measurements on powered circuits.

1.2.9 Disconnect the test leads from the circuit before

changing functions on the rotary switch.

1.2.10 Do not place the meter in an environment with

high pressure/temperature, dust, explosive gas

or vapor.

1.2.11 Stop using the meter if any abnormalities or

failures occur.

1.2.12 Do not connect the test leads to a circuit without

the battery securely fastened.

1.2.13 Do not store the meter in an area of direct sunlight,

high temperature or high humidity.

03 04

1.3 Safety Symbols

Data Hold

Auto-range

AUTO

Low Battery

Important safety information.See manual

for details.

Complies with European Union (EU) standards

Equipment protected throughout by double

insulation or reinforced insulation.

Earth ground

MEASUREMENT CATEGORY III is applicable

to test and measuring circuits connected to the

distribution part of the building's low-voltage

MAINS installation.

CAT III

Alternating Current

DC Direct Current

Both direct and alternating current

Diode

Continuity Buzzer

Max Hold

M.H

D.H

1.4 Maintenance

1.4.1 Repairs should only be implemented by trained

personnel.

1.4.2 Remove test leads from measurement circuits

before opening the battery cover.

1.4.3 In order to avoid incorrect readings that may cause

damage or personal injury, replace batteries as

soon as the “ ” symbol appears.

1.4.4 Use a damp cloth and mild detergent to clean the

meter.Do not use abrasives or solvents.

1.4.5 Move the rotary switch to the OFF position when

the meter is not in use.

1.4.6 Remove the batteries if the meter is not going to

be used for an extended period of time.

2. Description

• This meter is a professional, portable meter with an

easy to read LCD screen.

• Easy to use with one hand, overload protection

provided,low battery indication, and suitable for use

in factories,schools, by enthusiasts and hobbyists alike.

• Both auto-range and manual-range available.

• Automatic power off feature

• Data hold and Max. hold features

• During use, the instrument automatically shows the

value and unit of the measurement.

Conforms to UL STD. 61010-1, 61010-2-030,

61010-2-033, 61010-031; Certified to CSA STD

C22.2 NO. 61010-1,61010-2-030, 61010-031,

IEC STD.61010-2-033

05 06

2.1 Front Panel

1.Positive test probe (+)

2.Probe cover (removable)

3.NCV Indicator

4.LED indicators

5.Protective ring

6.Rotary switch

7.Data hold button (HOLD)

8.Range button (RAN)

9.Function button (FUNC)

10.Max hold button (MAX)

11.Non-contact voltage button (NCV)

12.Panel

13.LCD screen

14.COM jack (-)

2.2 Buttons and Functions

- Function Buttons

Logic

Switches between DC and AC

voltage.Keep pressing during

the Logic testing.Switches

between Resistance

measurement, Diode Test and

Continuity check.Switches

between DC and AC current.

Button Function Description

HOLD

RAN

MAX

Any switch

position

Power-up Option

Ω and mA

This Button is used to hold data.

Disables automatic power-off

feature.

Switch ranges in manual-range.

Hold to return to auto-range.

Used to measure and hold the

maximum value.

NCV Any switch

position

Power-up Option

Hold for Non-contact voltage

detection.

FUNC

Rotary switch: select between functions.

- Test probe: for V/Ω/ / measurements.

- COM jack: common test lead input.

- LCD display: shows results of measurements.

- LED indicator: In Logic mode, green indicated low

level, red indicated high level.

- Probe cover: used when making category III or higher

measurements.Twist to remove if making category II or

lower measurements.

- Protection ring: Keep hands behind the protection ring

and away from the probe to avoid injury.

- NCV Indicator:Detection of NCV,AC voltage indication.

1245678910 11 12 14

313

Logic

07 08

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

• Environment conditions: 600V CAT III

Pollution degree: 2 Altitude < 2000m

Operating temperature: 0~40°C, 32°F~122°F

(<80% RH, <10℃ non-condensing)

Storage temperature: -10~50 °C, 14°F~122°F

(<70% RH, battery removed)

• Max. Voltage Between Terminals

And Earth Ground: 600V DC or AC

• Auto ranges and manual range.

• Display: 20mm LCD

• Max. Show Value: 1999 (3 ½)

• Polarity Indication: ‘-’indicates negative polarity.

• Overrange Indication: Display ‘OL’.

• Sampling Time: approx. 0.4 second

• Unit showing: showing of function and electrical

capacity.

• Low Battery Indication: displayed

• Fuse Protection: FF400mA 600V

• Auto power off time: 15 min.

• Power Supply: 1.5V×2 AAA .

• Dimension: 222×43×29 mm

• Weight: approx. 129g(including battery)

batteries

3.2 Technical Specifications

(ambient temperature: 23±5°C, relative humidity <75%)

20V

200V

0.01V

0.001V

0.1V

200mV 0.1mV

Input impedance: 10MΩ

- Overload protection: 200mV range: 250V DC or AC rms

2V-600V ranges: 600V DC or AC rms

- Max. input voltage: 600V DC

±(0.7% reading + 2dgt)

Measuring Range Resolution Accuracy

3.2.1 DC Voltage

600V 1V

20V

200V

0.01V

0.001V

0.1V

200mV 0.1mV

Input impedance: 10MΩ

- Overload protection: 200mV range: 250V DC or AC rms

2V-600V ranges: 600V DC or AC rms

- Frequency range: 40~400Hz

- Response: average (rms of sine wave)

- Max. input voltage: 600V AC rms

±(0.8% reading + 3dgt)

Measuring Range Resolution Accuracy

3.2.2 AC Voltage

600V 1V ±(1.0% reading + 3dgt)

09 10

200mA 0.1mA

20mA 0.01mA

-Overload protection: resettable fuse

±(1.5% rdg + 3dgt)

Measuring Range Resolution Accuracy

3.2.6 DC Current

200mA 0.1mA

20mA 0.01mA

- Frequency range: 40~400Hz

- Response: average (rms of sine wave)

Overload protection: resettable fuse

±(2.0% rdg + 3dgt)

Measuring Range Resolution Accuracy

3.2.7 AC Current

2kΩ

20kΩ

200kΩ

0.01kΩ

0.001kΩ

0.1kΩ

200Ω0.1Ω

- Overload protection: 250V DC or AC rms

Open circuit voltage: approx. 250mV

±(1.0% reading + 3dgt)

Measuring Range Resolution Accuracy

3.2.3 Resistance

2MΩ0.001MΩ

±(1.0% reading + 1dgt)

20MΩ0.01MΩ±(1.0% reading + 5dgt)

- Overload protection: 250V DC or AC rms

Open circuit voltage: approx. 500mV

Resolution

0.001V

Forward DC current: approx. 1mA

- Reverse DC voltage: approx. 1.5V

- Overload protection: 250V DC or AC rms

Function Description

Displays approx. forward-

biased voltage

If measured resistance is less than

50Ω, buzzer will sound.

3.2.4 Continuity

3.2.5 Diode test

Function Description

3.2.8 Logic Test

- Input impedance: 1MΩ

- Overload protection: 250V DC or AC rms

Function Description

Logic

ov Low“0” 1.5V

Green

LED on

Green,Red

LED off

3.5V High“1”

Red LED

11 12

4. Using the Meter

4.1 Reading Hold

4.1.1 During measurement, press the “HOLD” button to

keep the current reading on the display. “D.H” will

appear of the display.Press “HOLD” again to return

to normal display.

4.2 Max Hold

4.2.1 During measurement, press the “MAX” button and

the display will show the maximum value recorded.

“M.H” will appear on the display.Press “MAX” again

to return to normal display.

4.3 Function Button

4.3.1 In voltage/current modes, press the “FUNC” button

to switch between AC/DC. At the resistance/diode/

continuity position, press “FUNC” to switch

between these modes.

4.4 Manual Range

4.4.1 In voltage/current/resistance modes, the default

range is “AUTO.” Press the “RAN” button to switch

to manual range. Each press of the button

increases the range, and returns to the lowest

range once pressed in the highest range.Hold

down “RAN” to return to auto-range.

4.5 Auto Power Off

4.5.1 The meter has an auto power off feature that will

turn the meter off automatically if left on.After

approx.14 minutes of non-use, the meter will

sound 5 short beeps and then 1 minute later the

meter will sound 1 long beep and turn itself off.

4.5.2 After auto power off has occurred, either move the

rotary switch or press the “FUNC”, “MAX” or “RAN”

buttons to turn the meter back on.

4.6 Preparing for Measurement

4.6.1 Select the desired function using the rotary switch.

If in manual mode, select the highest range first if

the value to be measured is unknown beforehand

and lower as needed.

4.6.2 When connecting the meter to a circuit, connect the

common lead first then the meter’s test probe.

4.6.3 If the battery voltage becomes <2.4V, the“ ”

symbol appears on the display.Replace the

batteries before making measurements.

4.5.3 If you hold down the “HOLD” button when turning

on the meter, this will disable the auto power off

function.The auto power off function will re-enable

after the meter is turned off again.

4.7 DC Voltage

4.7.1 Use the probe cover if making measurements on

category III installations.

4.7.2 Insert the black test lead into the COM jack.

4.7.3 Turn the rotary switch to the position.

4.7.4 The default mode is DC voltage. Press “RAN” to

switch to manual range if needed.

4.7.5 Connect the test probe and test lead across the

voltage source or load for measurement.

4.7.6 The display will show the measured value.Observe

the polarity of the test probe for DC voltage

measurements.

13 14

To prevent electric shock and damage to the meter

or personal injury, do not measure voltages that

may exceed 600V DC.

WARNING

Note:

- Before connecting the probe and test lead at lower

voltage ranges, the display may show erratic readings.

This is normal because the meter is highly sensitive.

Once a connection is made, the true reading will be

displayed.

- “OL” indicated an over-range situation in manual mode.

A higher range should be selected.

- In manual mode, select the highest range first if the

value to be measured is unknown beforehand and

lower as needed.

4.8 AC Voltage

To prevent electric shock and damage to the meter

or personal injury, do not measure voltages that

may exceed 600V AC rms.

WARNING

4.8.1 Use the probe cover if making measurements on

category III installations.

4.8.2 Insert the black test lead into the COM jack.

4.8.3 Turn the rotary switch to the position.

4.8.4 The default mode is DC voltage. Press “FUNC” to

switch to AC voltage. Press “RAN” to switch to

manual range if needed.

4.8.5 Connect the test probe and test lead across the

voltage source or load for measurement.

4.8.6 The display will show the measured value.

15 16

Note:

- Before connecting the probe and test lead at lower

voltage ranges, the display may show erratic readings.

This is normal because the meter is highly sensitive.

Once a connection is made, the true reading will be

displayed.

- “OL” indicated an over-range situation in manual mode.

A higher range should be selected.

- In manual mode, select the highest range first if the

value to be measured is unknown beforehand and

lower as needed.

- Millivolt range (mV) is only available in manual range

mode.

4.9 Resistance

Risk of electric shock. be sure all power to circuit

is off and capacitors have fully discharged before

measureing resistance

WARNING

4.9.1 Use the probe cover if making measurements on

category III installations.

4.9.2 Insert the black test lead into the COM jack.

4.9.3 Turn the rotary switch to the Ω position. Press

“RAN” to switch to manual range if needed.

4.9.4 Connect the test probe and test lead across the

resistance for measurement.

4.9.5 The display will show the measured value.

Note:

- “OL” indicated an over-range situation in manual mode.

A higher range should be selected.

- If the resistance measured is greater than 1M , the

meter may take a few seconds to get a stable reading.

This is normal for high resistance measurements.

- When the leads are not connected or when measuring

an open circuit, the display will read “OL”.

4.10 Diode Test

4.10.1 Use the probe cover if making measurements on

category III installations.

4.10.2 Insert the black test lead into the COM jack.

4.10.3 Turn the rotary switch to the position.

4.10.4 The default mode is resistance.Press “FUNC” to

switch to diode test.

4.10.5 Connect the test probe to the anode (+) and test

lead to the cathode (-) of the diode.

4.10.6 The display will show the measured value

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