Mastech MS8228 Operation Manual
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DIGITAL
DIGITAL
MULTIMETER
MULTIMETER
DIGITAL
DIGITAL MULTIMETER
MULTIMETER
OPERAT
OPERAT
ION
ION
MANUAL
MANUAL
OPERAT
OPERATION
ION MANUAL
MANUAL
DIGITAL MULTIMETER
CONTENTS
CONTENTS
CONTENTS
CONTENTS
1. 1. 1. 1.
1.1
1.2
DOS AND DON'TS
1.3
1.4
2. 2. 2. 2.
DESCRIPTION
DESCRIPTION
DESCRIPTION
2.1
NAMES OF PARTS
2.2
SWITCH, BUTTONS AND INPUT JACKS
2.3
LIQUID-CRYSTAL DISPLAY
DISPLAY
DISPLAY
3. 3. 3. 3.
3.1
GENERAL SPECIFICATIONS
3.2
4. 4. 4. 4.
OPERAT
OPERAT
ION
ION
INSTRUCTION
INSTRUCTION
OPERATION
OPERAT
ION INSTRUCTION
INSTRUCTION
4.1
4.2
HOLDING READINGS
4.3
4.4
SWITCHING RANGES
4.5
SWITCHING BETWEEN FREQUENCY/DUTY
4.6
SWITCHING TO RELATIVE MEASUREMENT
4.7
4.8
4.9
AUTO POWER OFF
CONTENTS
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Summary of Contents for Mastech MS8228

  • Page 1: Table Of Contents

    DIGITAL MULTIMETER CONTENTS CONTENTS CONTENTS CONTENTS CONTENTS 1. 1. 1. 1. SAFETY INFORMATION …1 PRELIMINARY …1 DOS AND DON’TS …2 DIGITAL DIGITAL MULTIMETER MULTIMETER DIGITAL DIGITAL MULTIMETER MULTIMETER SYMBOLS …3 MAINTENANCE …4 2. 2. 2. 2. DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION …6 NAMES OF PARTS …7...
  • Page 2: Safety Information

    DIGITAL MULTIMETER DIGITAL MULTIMETER CONTENTS SAFETY INFORMATION NTS 1. 1. 1. 1. SAFETY SAFETY INFORMATION 4.10 PREPARING FOR MEASUREMENT …29 SAFETY SAFETY INFORMATION INFORMATION INFORMATION 4.11 MEASURING RELATIVE HUMIDITY …29 WARNING WARNING WARNING WARNING MEASURING TEMPERATURE 4.12 …30 EXTREMELY EXTREMELY CAREFUL CAREFUL WHEN...
  • Page 3: Symbols

    DIGITAL MULTIMETER DIGITAL MULTIMETER SAFETY INFORMATION NTS SAFETY INFORMATION NTS 1.1.2 When the meter is delivered, check whether it has 1.2.7 Do not connect the meter to any voltage source while been damaged in transit. the rotary selector is in the current, resistance, capacitance, diode, continuity range.
  • Page 4: Maintenance

    DIGITAL MULTIMETER DIGITAL MULTIMETER SAFETY INFORMATION NTS SAFETY INFORMATION NTS - double insulation(Protection class ΙΙ). 1.4.5 Use damp cloth and mild detergent to clean the meter; do not use abrasives or solvents. CAT II - overvoltage (installation) category II, pollution degree 2 per IEC1010-1, referring to the level of 1.4.6 Turn the rotary selector to OFF position to switch off impulse withstand voltage protection provided.
  • Page 5: Description

    DIGITAL MULTIMETER DIGITAL MULTIMETER DESCRIPTION NTS DESCRIPTION NTS 2. 2. 2. 2. DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION - This meter is equipped with auto power off function. - This meter is a portable professional measuring - This meter is equipped with reading hold function. instrument with large LCD to show three lines of - This meter is equipped with relative measurement readings, as well as back light for easily reading.
  • Page 6 DIGITAL MULTIMETER DIGITAL MULTIMETER DESCRIPTION NTS DESCRIPTION NTS ℃/℉ Button (℃/℉) 6) Panel - for switching between ℃ and ℉ 7) Rotary selector 8) 10A input jack Rotary Selector 9) mA/μA/hFE input jack - for selecting functions and ranges. 10) COM input jack OFF Position 、...
  • Page 7: Liquid-Crystal Display (Lcd) (Lcd)

    DIGITAL MULTIMETER DIGITAL MULTIMETER DESCRIPTION NTS DESCRIPTION NTS LIQUID-CRYSTAL DISPLAY (LCD) 2.3 LIQUID-CRYSTAL LIQUID-CRYSTAL LIQUID-CRYSTAL DISPLAY DISPLAY DISPLAY (LCD) (LCD) (LCD) Relative measurement 1) Temperature indicator AUTO AUTO AUTO AUTO Auto range 2) Humidity indicator Battery low 3) Main indicator ℃...
  • Page 8: Specifications

    DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS SPECIFICATION NTS 3. 3. 3. 3. SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS 3.1.18 Operating temperature: 0℃ to 40℃(32°F to 104°F) Calibration is required once a year, to be carried out at a 3.1.19 Storage temperature: -10℃ to 50℃(10°F to 122°F) temperature between 18°C and 28 °C (64 °...
  • Page 9 DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS SPECIFICATION NTS the circuit, the true reading will be shown. 3.2.3 DC Current 3.2.2 AC Voltage Range Resolution Accuracy Range Resolution Accuracy 400µA 0.1µA 40mV 0.01mV 4000µA 1µA 400mV 0.1mV 40mA 10µA ±(1.2% of reading + 3 digits) ±...
  • Page 10 DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS SPECIFICATION NTS 3.2.4 AC Current 3.2.5 Resistance Range Resolution Accuracy Range Resolution Accuracy 400µA 0.1µA 400Ω 0.1Ω 4000µ A 1µA 4kΩ 1Ω ±(1.2% of reading + 2 digits) 40mA 10µ A ±(1.5% of reading + 5 digits) 40kΩ...
  • Page 11 DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS SPECIFICATION NTS 3.2.7 Frequency - Max. input current: V jack(mV ranges): 400mV Range Resolution Accuracy mA jack(µA ranges): 4mA, 9.999Hz 0.001Hz ±(2.0% of reading + 5 digits) mA jack(mA ranges): 400mA, 99.99Hz 0.01Hz 10A jack: 10A 999.9Hz 0.1Hz ±(1.5% of reading + 5 digits)...
  • Page 12 DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS SPECIFICATION NTS Input voltage range: 0.5V – 600V rms AC (higher input 3.2.10 Temperature 3.2.10.1 Temperature ( on sensor, thermoresistor NTC and voltage at higher frequency) temperature display) Input Impedance: 10MΩ Max. Input Voltage: 1000V DC or 750V rms AC Range Resolution Accuracy...
  • Page 13: Misconnection Alarm

    DIGITAL MULTIMETER DIGITAL MULTIMETER SPECIFICATION NTS OPERATING INSTRUCTION NTS 4. 4. 4. 4. OPERATING OPERATING INSTRUCTION 3.2.13 Luminance(Lux) OPERATING OPERATING INSTRUCTION INSTRUCTION INSTRUCTION Range Resolution Accuracy 4. 4. 4. 4.1 1 1 1 MISCONNECTION MISCONNECTION MISCONNECTION MISCONNECTION ALARM ALARM ALARM ALARM Lux (4000) 1 Lux...
  • Page 14: Switching Functions

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS At the same time, the lights at the “10A” and “COM” to the lowest level when the highest level is reached. jacks will flash to remind the user to plug in the test 3)Press the "RANGE"...
  • Page 15: Back Light

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 3)The meter will enter the manual range mode after the again to switch off the back light. “REL” button is pressed. REL mode is not available 3 ) The back light will go off automatically after 10 for Hz/Duty range because it is an automatic range.
  • Page 16: Laser Beam

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS NOTE: 4. 4. 4. 4.10 PREPARATI MEASUREMENT NOTE: NOTE: NOTE: 10 PREPARATI PREPARATI PREPARATING NG FOR FOR MEASUREMENT MEASUREMENT MEASUREMENT 1) The laser pointer requires a larger working current. 4.10.1 Switch on the power by turning the rotary selector. If Frequent use of laser beam will shorten the life of the the battery voltage is lower than 3.6V, the “...
  • Page 17: Measuring Temperature

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS temperature. balance with the environment being measured. Furthermore, it takes a longer intermission time, about 2)The working temperature of the meter is 0 ~ 40℃. As the temperature sensor is placed inside the meter, this 20 seconds, for sampling and the meter has to be function applicable...
  • Page 18 DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4.13.5 Take the reading on the main indicator of the LCD. 4.14.1 Plug the black test lead into the COM jack and the red test lead into the V jack. The polarity symbol denotes the polarity of the end connected by the red test lead.
  • Page 19 DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4.15.2 Set the rotary selector to the mV range position. position. 4.16.3 Press the "SELECT" button to switch to AC 4.15.3 Press the "SELECT" button to switch to DC measurement. Then press the “RANGE” button to measurement.
  • Page 20: Measuring Ac Current

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4.17.1 Plug the black test lead into the COM jack. When 4.18 8 8 8 MEASURING MEASURING CURRENT MEASURING MEASURING AC AC CURRENT CURRENT CURRENT the current to be measured is under 400mA, plug the WARNING WARNING WARNING...
  • Page 21: Measuring Frequency

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4. 4. 4. 4.21 MEASURING RESISTANCE 400mA and the maximum current of the 10A jack is 21 MEASURING MEASURING MEASURING RESISTANCE RESISTANCE RESISTANCE 10A. At the 10A jack, current exceeding the limit will WARNING WARNING WARNING...
  • Page 22: Measuring Capacitance

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4. 4. 4. 4.22 MEASURING CAPACITANCE 4.23.3 Press the "SELECT" button to switch to test. 22 MEASURING MEASURING MEASURING CAPACITANCE CAPACITANCE CAPACITANCE 4.23.4 Connect the red test lead to the anode and the black WARNING WARNING WARNING...
  • Page 23 DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS NOTE: 4.24.6 Read the resistance on the main indicator of the LCD. NOTE: NOTE: NOTE: NOTE: NOTE: NOTE: NOTE: 1) The infrared temperature sensor is placed inside the front part of the meter. It may take a longer time to If the test leads are open or the resistance of the circuit is reach...
  • Page 24: Testing Transistor

    DIGITAL MULTIMETER DIGITAL MULTIMETER OPERATING INSTRUCTION NTS OPERATING INSTRUCTION NTS 4.26.4 Take the reading on the main indicator of the LCD. should be ≤ 80mm (including the 16mm distance from the NOTE NOTE surface of the meter to the lens). NOTE NOTE:...
  • Page 25: Replacing Fuse

    DIGITAL MULTIMETER DIGITAL MULTIMETER MAINTENANCE MAINTENANCE 5. 5. 5. 5. MAINTENANCE MAINTENANCE MAINTENANCE MAINTENANCE 5.2.4 Put the battery cover back and fix it again to its original form. 5.1 REPLACING REPLACING REPLACING REPLACING THE THE BATTER BATTER BATTER BATTERIES WARNING WARNING WARNING WARNING...
  • Page 26: Replacing Test Leads

    DIGITAL MULTIMETER DIGITAL MULTIMETER MAINTENANCE ACCESSORIES REPLACING TEST LEADS 6. 6. 6. 6. ACCESSORIES ACCESSORIES 5.3 REPLACING REPLACING REPLACING TEST TEST TEST LEADS LEADS LEADS ACCESSORIES ACCESSORIES 1) Test leads: electric rating: 1000V 10A 1 pair (set) WARNING WARNING WARNING WARNING 2) Transistor Test Socket 1 set...

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