Related Manuals for Extech Instruments MiniAmp Series
Summary of Contents for Extech Instruments MiniAmp Series
- Page 1 User’s Guide MiniAmp™ Series Clamp-on Multimeters Models: MA400 MA420 MA440 MA460+...
- Page 2 The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied. Copyright © 2001 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
- Page 3 Introduction Congratulations on your purchase of Extech model MA400, MA420, MA440 or MA460+ clamp-on multimeter. Properly used, this meter will provide many years of reliable service. Clamp meter functions common to all meters: Autoranging AC Current Measurements Data Hold Auto Power Off Maximum Hold captures 30ms peaks 1.1"...
- Page 4 Safety Precautions Improper use of this meter can cause damage, shock, injury or death. Read and understand this users manual before operating the meter. Make sure any covers or battery doors are properly closed and secured. Always remove the test leads before replacing the battery or fuses.
- Page 5 PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY I Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient overvoltages to an appropriate low level. Note – Examples include protected electronic circuits. OVERVOLTAGE CATEGORY II Equipment of OVERVOLTAGE CATEGORY II is energy- consuming equipment to be supplied from the fixed installation.
- Page 6 Specifications DC Voltage RANGE Accuracy 400.0mV 0.3% + 4d 4.000V, 40.00V, 400.0V 0.5% + 3d 600V 1.0% + 4d NMRR: >50dB @ 50/60Hz, CMRR: >120dB @ DC, 50/60Hz, Rs=1kΩ Input impedance: 10MΩ, 30pF nominal, 1000MΩ on the 400.0mV range. AC Voltage RANGE (50Hz to 500Hz) Accuracy 4.000V, 40.00V, 400.0V...
- Page 7 Capacitance RANGE Accuracy* 500.0nF, 5.000µF, 50.00µF, 500.0µF, 3.5%* + 6d 3000µF 50.00nF Not specified *Accuracies with a film capacitor or better *Specified with battery voltage above 2.8V (approximately half full battery). Accuracy decreases gradually to 12% at low battery warning voltage of approximately 2.4V. Frequency Function Sensitivity...
- Page 8 Accuracy Notes: Accuracy is ± (% reading digits + number of digits), or as otherwise specified, at 23°C ±5°C < 75% R.H. Model MA420 True RMS accuracies are specified from 10% to 100% of range or as otherwise specified. Maximum Crest Factor <1.75:1 at full scale &...
- Page 9 Safety: The MiniAmp™ Series meters meet IEC61010-032(1994), EN61010-2- 032(1995), UL3111-2-032(1999). MA440 and MA460+: Category III 600V AC & DC MA400 and MA420: Category II 600V AC & DC and Category III 300V AC & E.M.C.: Meets EN61326(1997, 1998/A1), EN61000-4-2(1995), and EN61000-4- 3(1996) In an RF field of 1V/m: Capacitance function is not specified...
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Page 10: Table Of Contents
Meter Description MA440 and MA460+ (double display models) Clamp jaw Jaw trigger ACA LCD display Multimeter LCD display Select button Multimeter function switch Multimeter input jacks Hz button Clamp power button 10. Data Hold/Max Hold button MA400 and MA420 (single display models) Clamp jaw Jaw trigger LCD display... -
Page 11: Clamp Power Button
Operation NOTICE: Read and understand all warning and caution statements listed in the safety section of this operation manual prior to using this meter. AC/DC Voltage Measurements Connections are made through the test lead terminals. Insert the black test lead into the negative COM jack and the red test lead into the positive jack. - Page 12 Resistance and Continuity Measurements Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the jack. Slide the function switch to the "Ω position. )" •) Press the SELECT key momentarily to select Continuity. Touch the test probe tips across the circuit or part under test.
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Page 13: Data Hold/Max Hold Button 4
electrical noise that may produce an unstable reading. However, if the HZ reading displays zero due to insufficient sensitivity, activate the HZ function before measuring the signal to select the highest Hz sensitivity. Diode Test Insert the black lead into the negative COM jack and the red test lead into the positive jack Slide the function switch to "... - Page 14 Max Hold Press and hold for 1 second the Max Hold key to capture and hold the maximum measured value (up to 30ms). The annunciators “H ” will appear in the display Press and hold for 1 second the Max Hold key to exit the mode.
- Page 15 Maintenance WARNING To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input jacks 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.