Mastech MS8321B Instruction Manual
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Mastech MS8321B Instruction Manual

Mastech MS8321B Instruction Manual

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MS8321B
Digital Multimeter

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Summary of Contents for Mastech MS8321B

  • Page 1 MS8321B Digital Multimeter...

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ......... 1.Introduction ..........1 3.2.3 DC Current ..............1.1 Safety Guidelines 3.2.4 AC Current ..............1.1.1 Precautions 3.2.5 Resistance ........... 1.1.2 Safety Symbols 3.2.6 Continuity/Diode Test ............3.2.7 Temperature Test 1.1.3 Maintenance 4. Operating Instructions 2.Instrument Description ......3 ......10 ........

  • Page 3: Introduction

    • Make sure the test leads are in the correct input jacks before 1.Introduction measurement. This digital multimeter can measure AC/DC voltage, • Choose the highest range when the value to be measured is AC/DC current, resistance, diode, the voltage of battery, unknown beforehand.

  • Page 4: Maintenance

    Complies with European (EU) safety standards Alternating current Direct current Conforms to UL STD. 61010-1, 61010-2-032, 61010-2-033; Certified to CSA STD C22.2 NO. 61010-1, 61010-2-032,61010-2-033 CAT III (MEASUREMENT CATEGORY III): It is applicable to test and measuring circuits connected to the distribution part of the building’s low-voltage MAINS installation.

  • Page 5: Display

    2.2 Display 3. Specifications 3 ½ digit, 15mm LCD display 3.1 General Specifications 2.3 Hold Button Range Function • Press to keep the current reading on the display. Safety Rating 600V CAT III Press the button again to return to normal display. •...

  • Page 6: Technical Specifications

    3.2 Technical Specifications 3.2.3 DC Current Accuracy: ±(% of reading + digits) at 18°C~28°C with a Measuring range Accuracy Resolution relative humidity of <80%; guaranteed for a period of 1µA one year. ±(1.0% of reading +3 digits) 20mA 10µA 3.2.1 DC Voltage ±(2.0% of reading +5 digits) 10mA Measuring range...

  • Page 7: Resistance

    3.2.6 Continuity/Diode Test 4. Operating Instructions 4.1 DC/AC Voltage Description Function Warning If measured resistance Open circuit voltage: Max. input voltage: 600V DC or AC rms (200mV is less than 50Ω, the approx. 2.8V range is 250V DC or AC rms). buzzer will sound.

  • Page 8: Dc/Ac Current

    Note: 4.4 Diodes • When the measured resistance is greater than 1MΩ, Warning wait a few seconds for readings to stabilize.This is Turn off all power and discharge all capacitors normal for high resistance measurements. completely before testing diodes. • When the circuit is open or leads not connected, the display will show “1”.

  • Page 9: Temperature

    4.6 Temperature 5. Maintenance 5.1 Cleaning the Meter Warning Turn off all power and discharge all capacitors Warning completely before testing temperature. Before opening the back cover, turn off the meter and disconnect test leads from any circuit. • Turn the rotary switch to the °C or °F position.The display will show “1”...

  • Page 10: Replacing The Battery And Fuses

    5.3 Replacing the Battery and Fuses 1. Under normal conditions, it is unnecessary to replace the fuse. Don't replace it until the probes are unplugged and the power is shut down. Take out the two screws of the rear cover to remove the housing.

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