User’s Guide 400A AC Clamp Meter Model MA200
Introduction Thank you for selecting the Extech MA200 AC Clamp Meter. This meter measures AC Current, AC/DC Voltage, Resistance, Diode Test, and Continuity. This professional meter, with proper care, will provide years of safe reliable service. Safety International Safety Symbols This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.
Specifications Function Range Accuracy (of reading) AC Current 2.000 ACA 20.00 ACA 200.0 ACA 400 ACA 200.0mV, 2.000V 20.00V 200.0V 600V 200.0mV 2.000V 20.00V 200.0V 600V 200.0 2.000k 20.00k 200.0k 2.000M 20.00M ± (2.5% + 10 digits) ± (2.5% + 4 digits) ± (2.5% + 4 digits) ± (3.0% + 5 digits) ± (1.5% + 30 digits) AC Voltage DC Voltage Resistance Ω Jaw size 0.9" (23mm) approx. Display Continuity 3-1/2 digits (2000 counts) LCD Audible tone < 120Ω approx. Diode Test Open circuit voltage < 1.
Meter Description 1. Transformer jaws 2. MAX Hold button 3. Hold button 4. LCD Display 5. COM Input Terminal 6. Jaw opening trigger 7. Function select switch 8. Voltage, Resistance Input Terminal 9. Mode Select Button 10. Backlight Button 11. Range Select Button 1 6 2 7 3 4 9 11 5 AC DC AUTO MAX •))) HOLD 8 10 Alternating current Direct currrent) AutoRange mode MAX Hold mode Diode test mode Audible Continuity Data Hold mode Low Battery icon 4 MA200 Version 1.
Operation NOTICES: Read and understand all warning and precaution statements listed in the safety section of this operation manual prior to using this meter. Set the function select switch to the OFF position when the meter is not in use. AC Voltage Measurements 1. Set the rotary function switch to the VAC position. 2. Insert the black test lead banana plug into the negative (COM) jack and the red test lead banana plug into the positive (V/Ω) jack 3.
AC Current Measurements WARNING: Ensure that the test leads are disconnected from the meter before making current clamp measurements. 1. 2. 3. Set the Function switch to the 400 or 200A range. If the range of the measured is not known, select the higher range first then move to the lower range if necessary. Press the trigger to open jaw. Fully enclose one conductor to be measured. The clamp meter LCD will display the reading. Resistance Measurements •))) position. 1. Set the function switch to the Ω 2.
Diode Test 1. Turn the rotary switch to the Ω •))) position. 2. Insert the black test lead banana plug into the negative (COM) jack and the red test lead banana plug into the positive (VΩ) jack. 3. Push the mode button to indicate on the display. 4. Touch the test probes to the diode under test. Forward voltage will indicate 400 to 700mV. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0mV.
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 with 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 periods of longer than 60 days, remove the batteries and store them separately Battery Replacement 1.
