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Mastech MS8238H, User Manual

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Mastech MS8238H User Manual Download Page 2

CONTENTS

2. Safety Information

2.1 Safety Standards

1. Overview 

2.3 Precautions

2.4

 

Electrical Symbols 

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3. Description

3.1 Front Panel

3.2

 

Display

 

3.3

 

Button Funtions

4. Operating Instructions

4.1 AC/DC voltage

4.2 AC/DC current

3.4 Auto Power Off 

5. Specifications 

5.1 General Specifications 

5.2 Technical Specifications 

4.3 Resistance

4.4 Continuity

4.5 Diode test

4.6 Battery test

4.7 Temperature

6. Maintenance

6.1 General Maintenance

6.2 Replacing the Battery 

6.3 Replacing the Fuse

4.8 Non-Contact Voltage

4.9 Wireless Operation

CONTENTS

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6.4 Replacing the Probe

7. Accessories

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2.2 FCC Statement

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Summary of Contents for MS8238H

Page 1: ...MS8238H User s Manual Digital Multimeter ...

Page 2: ...r Off 5 Specifications 5 1 General Specifications 5 2 Technical Specifications 4 3 Resistance 4 4 Continuity 4 5 Diode test 4 6 Battery test 4 7 Temperature 6 Maintenance 6 1 General Maintenance 6 2 Replacing the Battery 6 3 Replacing the Fuse 4 8 Non Contact Voltage 4 9 Wireless Operation CONTENTS 01 01 02 04 05 05 06 07 07 08 08 08 09 10 10 11 11 11 12 12 13 16 16 17 17 18 6 4 Replacing the Prob...

Page 3: ...ce that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordanc...

Page 4: ...any doubt please have the meter inspected by a qualified technician Never measure voltages that may exceed the protection limit indicated on the meter Always be careful when working with voltages above 60V DC or 30V AC rms Keep fingers behind the probe barriers when making voltage measurements Make sure the test leads are in the correct input jacks before measurement Do not expose the meter to exp...

Page 5: ...6 Rotary switch 7 10A input jack 8 Common jack 9 Input jack all functions except current greater than 400mA 1 4 5 6 2 3 7 9 8 Direct Current Voltage Alternating Current Voltage Negative Value Wireless Communication indicator Auto Power Off Low Battery Auto Range Active Main Display Data Hold Diode Test Continuity Test Non contact Voltage Measurement Units ...

Page 6: ...e circuit black lead on the lower voltage side Turn circuit power on and read the measurement on the display If OL is display it means the measurement has exceeded the current range Move the rotary switch to a higher range 3 3 Button Functions FUNC button Press FUNC to switch between AC DC or between function in a rotary switch position HOLD button Press HOLD again to release the hold Press HOLD t...

Page 7: ...ke sure to use correct input jicks to prevent damage to the meter 4 3 Resistance measurement Set the rotary switch to the multi function position The default function is resistance Connect the red test lead to the input jack and the black lead to the COM jack Connect the leads to the circuit under test and read the measurement on the display Turn off power to the circuit Allow all capacitors to di...

Page 8: ...nd read the measurement on the display Set the rotary switch to the temperature position Press FUNC to switch between Celsius and Fahrenheit To avoid injury or damage to the meter do not move the rotary switch to the temperture position while measuring voltages exceeding 30V WARNING 4 8 Non Contact Voltage NCV measurement Move the top of the meter toward the voltage source If voltage is detected 1...

Page 9: ...V 1 2 of reading 3digits 5 2 Technical Specifications Accuracy of reading digits at 18 C 28 C with a relative humidity of 80 guaranteed for a period of one year Resolution Accuracy 4V 40V 0 01V 0 001V 5 2 2 AC Voltage Range 1 0 of reading 10 digits 5 2 1 DC Voltage Input impedance 10MΩ Max input voltage 600V DC or AC T RMS Resolution Accuracy 400mV 4V 0 1V 0 001V 0 1mV 0 01V 1V 40V 400V 600V 0 8 o...

Page 10: ...r damage to the meter do not allow moisture inside the case and remove test leads before opening battery cover WARNING 2 0 of reading 4 digits 5 2 6 DC Current Resolution Accuracy 400µA 0 1µA 1µA 4000µA Range 1 0 of reading 10digits 2 0 of reading 8digits 40mA 400mA 10A 0 01mA 0 1mA 10mA Overload protection mA jack F 400mA H 600V fuse 10A jack F 10A H 600V fuse Max input current mA jack 400mA DC o...

Page 11: ...ctrical shock and personal injury Use the following steps to replace the battery 1 Turn off the meter 2 Remove test leads 3 Unscrew and remove battery cover from back of meter 4 Replace used battery with a new 9V battery 5 Replace battery cover and fasten securely 6 3 Replacing the Fuse WARNING Turn off the meter and disconnect test leads before opening back cover to avoid electical shock and pers...

Page 12: ...R 00 05 1807 ...

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