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Summary of Contents for SEW 6420 DM
- Page 1 6420 DM DIGITAL MULTIMETER with bargraph INSTRUCTION MANUAL...
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Page 2: Table Of Contents
INDEX PAGE 1.INTRODUCTION......2.SAFETY NOTES......2 3.FEATURES........ 3 4.SPECIFICATIONS...... 4-5 5.GENERAL........6 6.INSTRUMENT LAYOUT....7-11 7.MEASUREMENT......12-13 8.MAINTENANCE......9.FUSE REPLACEMENT....15... -
Page 3: Introduction
1. INTRODUCTION NOTE This meter has been designed and tested According to CE Safety Requirements for Electronic Measuring Apparatus, IEC / EN 61010-1 and other safety standards. Follow all warnings to ensure safe operation. WARNING READ "SAFETY NOTES" (NEXT PAGE) BEFORE USING THE METER. -
Page 4: Safety Notes
2. SAFETY NOTES Read the following safety information carefully Before attempting to operate or service the meter. Use the meter only as specified in this manual. Otherwise, the protection provided by the meter may be impaired. Rated environmental conditions (1) Indoor Use. (2) Installation Category (3) Pollution Degree 2. -
Page 5: Features
3V DC power supply. Input impedance 10 M Safety Standard : EN 61010-1 CAT 600V EN 61326-1 To disable the auto-off function, press the "Range" key and turn on the 6420 DM multimeter at the same time. - 3 -... -
Page 6: Specifications
4.SPECIFICATIONS (All at 23°C±5°C 80%R.H) AC Voltage Range Resolution Accuracy 0.1 mV ± (1% rdg+5dgt) 400 mV ± (1% rdg+5dgt) 1 mV ± (1% rdg+5dgt) 40 V 10 mV ± (1% rdg+5dgt) 400 V 100 mV ± (1% rdg+5dgt) 750 V Input impedance 10 M DC Voltage Range... - Page 7 DC AC 10A Range Accuracy Resolution 10 A ± (2% rdg+3dgt) 0.1 A Overload Protection 12.5 A(500 V) fast blow fuse Resistance Range Resolution Accuracy ± (1.5% rdg+3dgt) ± (1.5% rdg+3dgt) ± (1.5% rdg+3dgt) 40 K ± (1.5% rdg+3dgt) 400 K ±...
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Page 8: General
5.GENERAL Dimensions 192mm(L) x 88.6mm(W) x 45.2mm(D) Weight Approx. 350g (battery included) Power source AAA battery 1.5V x 2. Low Battery Indication "BATT" sign appears on the display when the battery voltage drops below accurate operating level. Accessories Test leads, Batteries, Instruction Manual. -
Page 9: Instrument Layout
6.INSTRUMENT LAYOUT (13) (10) (12) (11) (1) Function Switch (8) Range Button (2) LCD Display (9) HOLD Button (3) V. Hz. Terminal (10) REL Button (4) mA. uA Terminal (11) PEAK Button (5) 10A Terminal (12) VAHz Button (6) COM Terminal (13) MAX/MIN Button (7) Select Button - 7 -... - Page 10 (1) Function selection rotary switch The rotary switch selects the function. (2) LCD Display 3999 count LCD with LOW BATTERY indication. (3) Volt / Ohm / Frequency Terminal This is positive input terminal for voltage / ohm / frequency measurement. Use the RED test lead to connect.
- Page 11 (8) Range Button Press the Range button to selects the manual range mode and turns off the AUTO annunciator and turns on the manual annunciator and changes the full scale range. In manual range mode, each time press Range button (less than one second), the range increments and a new value is displayed.
- Page 12 (11)PEAK Button The PEAK mode is used to measure the peak value of a signal. It is useable with AC Current measurements. Press the PEAK button, the PMAX annunciator turns on and the display shows the maximum peak value. When the PEAK button is pressed again (less than one second), the PMIN annunciator turns on, PMAX annunciator turns off and the display shows the...
- Page 13 (13)MAX / MIN Button Press button to enter the MAX/MIN recording mode. When the MAX/MIN button is pressed for the first time, the "MAX" annunciator turns on, and the display shows the maximum value. When the MAX/MIN button is pressed again (less than one second), the "MIN"...
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Page 14: Measurement
7. MEASUREMENT Before proceeding with measurement , read the safety notes. (1)Voltage measurement Insert the BLACK test lead to COM and the RED One to the other terminal. Switch to V function for ACV or DCV function. Use the test lead tip to the circuit and read the reading of display directly. - Page 15 time of measurement is only 50ms, the least significant digit will not display. (5)Diode Measurement Diode measurement mode shares the same configuration with 4.000 V manual voltage measurement mode. If the test circuit is open or the voltage drop between the two ports of the device (diode) under test are larger than 2 V, the LCD panel will show "OL".
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Page 16: Maintenance
8. MAINTENANCE Battery replacement When low battery warning appears, change new batteries as follows (1) Disconnect the test leads from the instrument and turn off power. (2) Unscrew the case and replace new batteries. (3) Close the case and lock the screw. Cleaning and Storage WARNING To avoid electrical shock or damage to the meter,... -
Page 17: Fuse Replacement
9. FUSE REPLACEMENT There are 3 fuses on the PCB. 0.5A for mA. Range and 12.5A for 10A range. Another 0.5A for Volt / OHM / frequency range. Open the meter case, then remove and replace the fuse. Only replace with the same specification fuse. FUSE 0.5A / 250V (5 X 20 mm) - Page 18 measurements performed at the source of the low voltage installations. measurements performed in building installations. measurements performed on circuits directly connected to the low voltage installations. - For measurements performed on circuits not directly connected to mains.
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