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MT 730

AC CLAMP METER

INSTRUCTION MANUAL

© 2004, MAJOR TECH (PTY) LTD. All rights reserved

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Summary of Contents for MT 730

Page 1: ...MT 730 AC CLAMP METER INSTRUCTION MANUAL 2004 MAJOR TECH PTY LTD All rights reserved ...

Page 2: ...t 9 9 Resistance Measurement 10 10 Diode Test 11 11 Continuity Testing 12 12 Data Hold Function 13 13 Max Hold Function 13 14 LCD Backlight 13 15 Battery Replacement 14 16 Optional Accessories 14 1 MEASURING LIMITS AC Amperes 0 01A to 600A DC Voltage 0 1mV to 600V AC Voltage 0 1mV to 600V Resistance 0 1Ω to 20MΩ Buzzer Sounds 120Ω Diode Test Test Current 0 3mA 1 CONTENTS ...

Page 3: ...f the meter is in its intended applications and follow measurement procedures described in this manual Follow all safety and operating instructions to ensure maximum personal safety during the use and operation of the meter Failure to follow the above instructions may cause injury instrument damage and or damage to equipment under test The symbol indicated on the meter means that the user must ref...

Page 4: ...et Never open the battery compartment cover when making measurements WARNING Always inspect the meter and test leads for any signs of damage or abnormality before use If the meter or its accessories have any structural defects such as broken test leads cracked cases exposed metal parts or the display is not reading do not attempt to make measurements Do not turn the function switch whilst test lea...

Page 5: ... use a damp cloth and mild detergent only Qualified and trained service technicians should only perform calibration and repair of the meter 3 FEATURES Large 2000 count LCD display with bright white LED backlight Wide measuring range from 0 01A AC up to 600A AC Measures AC and DC Voltage up to 600 volts Measures resistance from 0 01Ω up to 20MΩ Designed to the international safety standard IEC61010...

Page 6: ...er Jaws Jaw Trigger Backlight Switch Max Hold Switch Display COM Terminal AC Volt DC Volt Resistance Buzzer and Diode Test Input Terminal Data Hold Switch Range Selector Switch for Volts and Resistanc 5 Buzzer and Diode Test Switch ...

Page 7: ...20MΩ 0 200 0Ω 0 2 000kΩ 0 20 00kΩ 0 200 0kΩ 0 2 000MΩ 0 20 00MΩ 0 1 Ω 1Ω 10 Ω 100 Ω 1 kΩ 10 kΩ Accuracy of Reading 1 0 4 digits 1 5 2 digits 2 0 3 digits 3 0 5 digits Note No Autoranging on 200mV AC Range 6 Clamp Size Diode Test Continuity Check Low Battery Indication Overrange Indication Measurements Rate Input Impedance Display AC Current Bandwidth AC Voltage Bandwidth Operating Temperature Stor...

Page 8: ...g range you have selected 2 Press the trigger to open up the transformer jaws and clamp around the single conductor under test 3 Read the display Note During current measurements keep the transformer jaws fully closed otherwise this will affect the accuracy of the measurement When large currents the transformer jaws may buzz This is not a fault and does not affect the accuracy of the reading 20A 2...

Page 9: ... COM terminal 3 Connect the other end of the test leads to the circuit under test 4 Read the display If a sign is displayed the red lead is the negative potential Note The meter is set to default to Auto Range mode Pressing the hold button will allow the user to record the maximum reading on the DC volt range See page 13 for further instructions for MAX Hold function Battery 8 V __ __ ____ MAX ...

Page 10: ...lack lead to the COM terminal 4 Connect the other end of the test leads to the circuit under test Take the reading on the display Note The meter is set to default to Auto Range mode Pressing the hold button will allow the user to record the maximum reading on the AC volt range See page 13 for further instructions for MAX Hold function V 9 MAX ...

Page 11: ...he black lead to the COM terminal 3 Connect the other end of the test leads to the circuit or component under test Take the reading on the display Note The meter is set to default to Auto Range mode WARNING before attempting to make a resistance measurement ensure there is no voltage present on the circuit under test Ù Resistor 10 ...

Page 12: ...check diodes Transistors silicon controlled rectifiers SCR s and other semiconductor devices The test sends a current through a semiconductor junction then measures the junction s voltage drop Normal forward voltage drop forward bias for a good silicon diode is between 0 4V to 0 9V A reading higher than that indicates a leaky defective diode A zero reading indicates a shorted diode Reverse the tes...

Page 13: ...the buzzer beeps 5 Connect the tip of the test leads to the circuit or component under test The display reads the resistance and the buzzer beeps when the reading is not more than about 120Ω Note Using resistance and continuity function in a live circuit will produce false results and may damage the instrument In many cases the suspicious components must be disconnected from the circuit under test...

Page 14: ...ranges 1 Press the button once When the MAX is activated the meter beeps and displays the MAX indicator on the LCD 2 The meter will record the highest reading and freeze the display indicating this maximum reading 3 To deactivate the MAX function press button once the meter will beep and the meter will start reading new measurements 14 LCD BACKLIGHT The backlight is ideally used in dark or dimly l...

Page 15: ...e function switch to the position 3 The battery cover is secured to the bottom of the case by a screw Using a screwdriver remove the screw from the battery cover and remove the battery cover from the meter 4 Remove the old battery and replace it with two new IEC LR 3 1 5V batteries 5 Replace the battery cover and reinstall the screw 16 OPTIONAL ACCESSORIES OFF HDT 3914 Crocodile Clip CAT lll 600V ...

Page 16: ...strial Village Sam Green Road Tunney Ext 9 Elandsfontein South Africa P O Box 888 Isando 1600 South Africa Telephone 27 11 872 5500 National Contact Number 08 61 62 5678 Sales Facsimile 27 11 822 2806 Admin Facsimile 27 11 822 1411 E mail sales major tech com www major tech com ...

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