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MA640-en-GB_V2.4   5/15 

10

Maintenance 

WARNING: 

To avoid electrical shock, disconnect the meter from any circuit, remove the test leads 

from the input terminals, and turn OFF the meter before opening the case. Do not operate the meter 
with an open case. 

Cleaning and Storage 

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or  
solvents. If the meter is not to be used for 60 days or more, remove the battery and store it 
separately. 

Battery Replacement 

1.  Remove the Phillips head screws that secures the rear battery door 
2.  Open the battery compartment 
3.  Replace the 9V battery 
4.  Secure the battery compartment door 

 
 

You, as the end user, are legally bound (

EU Battery ordinance

) to return all used 

batteries, 

disposal in the household garbage is prohibited! 

You can hand over your 

used batteries / accumulators at collection points in your community or wherever batteries / 
accumulators are sold! 

Disposal: 

Follow the valid legal stipulations in respect of the disposal of the device at the 

end of its lifecycle 

 

Summary of Contents for MA640

Page 1: ...User s Guide 600Amp AC DC True RMS Clamp Meter Model MA640...

Page 2: ...injury This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result damage to the product PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY I Equip...

Page 3: ...ore replacing the battery or fuses Inspect the condition of the test leads and the meter itself for any damage before operating the meter Repair or replace any damage before use Use great care when ma...

Page 4: ...RELATIVE Button 13 Battery compartment rear 14 Positive Input jack Display icons Description HOLD Data Hold AUTO Autoranging DC Direct Current AC Alternating Current MAX Max reading MIN Min reading L...

Page 5: ...tip along a length of the cord to assure placing the tip in close proximity to the live conductor NOTE The detector is designed with high sensitivity Static electricity or other sources of energy may...

Page 6: ...e side of the circuit 5 Read the voltage value in the display Resistance Measurements Note Remove power from the device under test before making resistance measurements 1 Rotate the function switch to...

Page 7: ...ay OL the device is open If both readings are very small or 0 the device is shorted Capacitance Measurements WARNING To avoid electric shock discharge the capacitor before measuring 1 Rotate the funct...

Page 8: ...position 2 Press the MODE button to select F or C 3 Insert the Temperature Probe into the input jacks 4 Place the temperature probe tip where needed 5 Read the temperature on the display Note In case...

Page 9: ...seconds LCD Backlight The LCD is equipped with backlighting for easier viewing especially in dimly lit areas Press and hold the HOLD button for 2 seconds to turn the backlight on The backlight will au...

Page 10: ...re remove the battery and store it separately Battery Replacement 1 Remove the Phillips head screws that secures the rear battery door 2 Open the battery compartment 3 Replace the 9V battery 4 Secure...

Page 11: ...0 0 VDC 0 1V Resistance 600 0 0 1 1 0 4 digits 6 000k 0 001k 1 5 2 digits 60 00k 0 01k 600 0k 0 1k 6 000M 0 001M 2 5 3 digits 60 00M 0 01M 3 5 5 digits Capacitance 40 00nF 0 01nF 4 0 20 digits 400 0nF...

Page 12: ...ranges 50 60Hz and 5 to 100 of range Operating Temperature 5 C to 40 C 41 F to 104 F Storage Temperature 20 C to 60 C 4 F to 140 F Operating Humidity Max 80 up to 31 C 87 F decreasing linearly to 50...

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