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EZ DM-311 Operation Manual

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Summary of Contents for EZ DM-311

  • Page 3 WARNING Before using the meter, you must read the following safety information of Maximum input specification carefully. V measurements: Below 1000VDC, 750VAC RMS measurements: Below 200 (Fuse rating 250V) 10A measurements: Below 10A(Fuse rating 250V) measurements: Below 600VAC/DC(1 minute) measurements: Below 600VAC/DC(1 minute) Hz measurements: Below 250VAC/DC BAT : Don't input the any voltage, current but battery voltage.
  • Page 4 DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer's Name : EZ Digital Co., Ltd. Manufacturer's Address : #222-28, Nae-dong, Ojeong-gu, Bucheon-si, Gyeonggi-do, KOREA, 421-160 Declares that the product : Product Name : DIGITAL MULTIMETER Model Numbers :...
  • Page 5 WARRANTY This instruments is warranted against defects in material and workmanship for a period of one year from the data of sale. During the warranty period, EZD will repair or replace it which Prove to be defective. But warranty shall not apply to defects resulting from improper or inadequate maintenance by buyer, In this case, the repair will be billed at a nominal cost.

  • Page 6: Table Of Contents

    CONTENTS TITLE PAGE INTRODUCTION -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 MULTIMETER SAFETY- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 FEATURES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 HOW TO USE THE METER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5...
  • Page 7 CONTENTS, continued TITLE PAGE Me as ur in g Re si st an ce - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 2 Tra ns is to r hF E Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 3 Di od e Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14 Co nt in ui ty Tes t - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1 5...

  • Page 8: Introduction

    INTRODUCTION INTRODUCTION WARNING NOTE All material in this manual applies to the DM-310SRS AND DM-341 unless otherwise indicated. READ"MELTIMETER SAFETY" BEFORE USING THE METER. This meter has been designed and tested according Your EZD Digital Multimeter (also referred to as the meter ) to EN 61010-1, Safety Requirements for Electronic is a handheld instrument that is designed for use in the field, Measuring Apparaturs.

  • Page 9: Multimeter Safety

    MULTIMETER SAFETY MULTIMETER SAFETY SAFETY DESIGNED Before using the meter, read the following safety This meter has the feature that warns the dangerous information carefully. In the manual the word mismatching between rotary switch's mode selection "WARNING" is used for conditions and actions that position and jack terminal used, Buzzer sound if rotary pose hazards to the user, the word "CAUTION"...
  • Page 10 MULTIMETER SAFETY 1.000 1.000 1.000 1.000 1.000 1.000 (mismatching) (Good) (mismatching) Figure 2 * Using Effect (A):No plug in 10A JACK terminal.(Range selector : except 10A position) (B):Performance good Measurement. (C): Buzzer sound.

  • Page 11: Features

    FEATURES FEATURES Disconnect the live test lead (Red) before disconnecting the common test lead (Black). 3 Digit 2000 count LCD(DM-310SRS) 4 Digit 20000 count LCD(DM-341) Follow all safety procedures for equipment being Measurement rate : 2 times/sec tested. Disconnect the input power and discharge Different colors of input terminals all high voltage capacitors through a protective Low battery indication...

  • Page 12: How To Use The Meter

    HOW TO USE THE METER INPUT TERMINALS HOW TO USE THE METER SOCKET Transistor hFE input terminal This section describes your meter and how to use it, SOCKET capacitance input terminal For ease of reference, each description is numbered and keyed the illustration in Function Selector Rotary Switch page 27, 28 of this manual.
  • Page 13 HOW TO USE THE METER INPUT TERMINALS AND LIMITS Table 1. Input Terminals and Limits(DM-310SRS) FUNC INPUT TERMINALS MIN DISPLAY READING MAX DISPLAY READING MAXIMUM INPUT TION BLACK DM-311.312 DM-313 DM-311. 312 DM-313 1000V 1000V 1000VDC,750VAC 0.01A 0.01A 10.00A 10.00A 10A/250V 199.9 200 /250V 199.9...
  • Page 14 HOW TO USE THE METER INPUT TERMINALS AND LIMITS Table 1. Input Terminals and Limits(DM-341) INPUT TERMINALS FUNCTION MIN DISPLAY MAX DISPLAY MAXIMUM INPUT READING READING BLACK 1000V 1000VDC,750VAC 0.01 0.001A 10.000A 10A/250V 199.99 200 /250V 600VAC/DC(1min) 0.01 19.999 199.99 250VAC/DC 600VAC/DC(1min)

  • Page 15: Pushbuttons

    HOW TO USE THE METER PUSHBUTTONS Pushbuttons(DM-313) Items describe how to use the pushbuttons. HOLD(display hold) Press the power button to turn on the meter. Press hold switch to toggle in and out of the touch hold mode. In the touch hold Mode, the HOLD annunciator is MANUAL RANGING displayed and the last reading is hold on the display(Except 10A Range).

  • Page 16: Digital Display

    HOW TO USE THE METER INPUT TERMINALS AND LIMITS Digital display 1) DIGITAL DISPLAY The digital display has a 2000 count (DM-310SRS) or 20000 count (DM-341) display with polarity indication. 2) AUTO AUTO-RANGE (DM-313) The meter is the auto-range mode and will automatically select range with the best resolution. The meter powers on in auto-range mode.

  • Page 17: Applications

    . AC 1.000 1.000 voltage is AC-Coupled to the 10 input, and frequency range is 50 to 400 Over range is being indicated by flickered figure 1 in display (DM-313) and by figure 1 (DM-311, 312, 341) Figure 5-1. Measuring Voltage...

  • Page 18: Measuring Current (Ac

    1.000 1.000 Over range is being indicated by flickered figure "1" in display. (DM-313) and by digit "1" (DM-311, 312, 341) WARNING DO NOT APPLY THE VOLTAGE OF MORE THAN 60V DC OR 30V AC RMS.

  • Page 19: Me As Ur In G Re Si St An

    APPLICATIONS MEASURING RESISTANCE Measuring Resistance To measure resistance, connect the black lead to common 1.000 1.000 terminal and red one to v/ terminal, and turn the rotary switch to range as Figure 5-3. Connect the test leads across the resistance under measurement. CAUTION Turn off power on the test circuit and discharge all capacitors before attempting in-circuit resistance measurements, If an...

  • Page 20: Transistor Hfe Test

    APPLICATIONS TRANSISTOR hFE TEST Transistor hFE Test (DM-312, 341) 1.000 1.000 Set rotary function switch to hFE range as Figure 5-4. insert the leads (Emitter, Base, Collector) into the proper holes of the socket on the front panel, according to transistor type NPN or PNP.

  • Page 21: Diode Test

    APPLICATIONS DIODE TEST Diode Test 0.50 To perform a diode test, plug the black test lead to COM terminal and the red one into v/ inputs, turn the rotary switch to , and connect the test leads across the diode under measurement as Figure 5-5.

  • Page 22: Co Nt In Ui Ty Tes

    Connect the black test lead to COM input terminal and the red one to v/ terminal, and the leads across the resistance or circuit under measurement as Figure 5-6. Test resistance below 200 (DM-311, 312, 341) or 2 at Lo mode(DM-313) cause the meter to emit a continuous tone.

  • Page 23: Battery Test

    APPLICATIONS BATTERY TEST Battery Test (DM-311) 1.500 To measure a battery, connect the black lead to common terminal and red one to v/ terminal and turn the rotary switch to BAT range as Figure 5-7. Connect the test leads across the battery under measurement.

  • Page 24: Me As Ur In G Fr Eq Ue Nc

    APPLICATIONS MEASURING FREQUENCY Measuring Frequency (DM-312, 341) 1.000 In the frequency count mode, the frequency display auto-range to one of two range : 20 , 200 , for frequencies above 10 , the update rate slows and follows the input signal. Turn the rotary switch to the frequency range to be used and connect the test leads, across the frequency under measurement as Figure 5-8.

  • Page 25: Measuring Capacitance

    APPLICATIONS MEASURING CAPACITANCE Measuring Capacitance (DM-312, 341) 1.000 Before connecting the test capacitor, turn off the power and note the display which should be zero, each time the range is changed. Adjust the ZERO ADJ( ) Knob for this condition. NOTE - Capacitor should be discharged before being tested.

  • Page 26: Maintenance

    MAINTENANCE CALIBRATION / REPLACEMENT Calibration Battery Replacement (Figure 5-10) Calibrate your meter once a year to ensure that it After disconnecting test leads and turning off the performs according to its specifications. Contact the multimeter, Remove the one screw from the Battery cover. nearest Distributor for calibration procedure.
  • Page 27 MAINTENANCE CALIBRATION / REPLACEMENT Figure 5-10. Battery Replacement...
  • Page 28 MAINTENANCE CALIBRATION / REPLACEMENT Figure 5-10. Fuse Replacement...

  • Page 29: Specifications

    SPECIFICATIONS DM-311, DM-312 Specifications D M - 3 1 1 D M - 3 1 2 F U N C T IO N R A N G E R E S O L U T I O N A C C U R A C Y...
  • Page 30 SPECIFICATIONS DM-311, DM-312 Specifications D M - 3 1 1 D M - 3 1 2 F U N C T IO N R A N G E R E S O L U T I O N A C C U R A C Y...
  • Page 31 SPECIFICATIONS DM-311, DM-312 Specifications D M - 3 1 1 D M - 3 1 2 F U N C T IO N R A A N G E R E S O L U T I O N A C C U R A C Y...

  • Page 32: Specifications Dm-313

    SPECIFICATIONS DM-313 Specifications D M -3 1 3 D M -3 1 3 F U N C T IO N R A A N G E R E S O L U T IO N A C C U R A C Y F U N C T IO N R E S O L U T IO A C C U R A C Y...

  • Page 33: Specifications Dm-341

    SPECIFICATIONS DM-341 Specifications D M -3 1 3 D M -3 1 3 F U N C T I O N F U N C T I O N R A A N G E R E S O L U T I O N A C C U R A C Y R A N G E R E S O L U T I O N...
  • Page 36 The specifications are subjected to change without notice.

This manual is also suitable for:

Dm-312Dm-310srsDm-341

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