User Manual
Contents
1. 4mm 10A 250V fuse 4 Close the bottom case and fasten the screws then close the battery cabinet cover and fasten the screw 6 MAINTENANCE 1 Before open the battery cover disconnect both test lead and never uses the meter before the battery cover is closed 2 To avoid contamination or static damage do not touch the circuit board without proper static protection 3 If the meter is not going to be used for a long time take out the battery and do not store the meter in high temperature or high humidity environment 4 Repairs or servicing not covered in this manual should only by qualified personal 5 Periodically wipe the case with a dry cloth and detergent Do not use abrasives or solvents on the meter For any questions please contact Kaito Electronics Inc or visit www multimeterwarehouse com k8092844 22. Because inputs below 1 of range are not specified it is normal for this and other true rms meters to display nonzero readings when the test leads are disconnected from a circuit or are shorted together For volts and amps crest factor of lt 3 at 3000 counts decreasing linearly to 2 at full scale AC volts and AC amps are dc coupled If the measurement of AC voltage contains more than DCV 250V please choose manual range 600V 2 2 3 DC Current Range Accuracy of Reading Counts 4001A 4000A 1 5 2 40mA 400mA 1 5 2 4A 10A 2 0 3 Overload protection 0 5A 250V 10A 250V fuse 1 10A for 15sec each 15min maximum 2 2 4 AC Current AC DC True RMS Range Accuracy of Reading Counts DC 45Hz to 2kHz 4001A 4000A 2 0 3 40mA 400mA 2 0 3 4A 10A 2 5 3 Overload protection 0 5A 250V 10A 250V fuse 1 All ac ranges are specified from 1 to 100 of range Below 5 of range add10 counts Because inputs below 1 of range are not specified it is normal for this and other true rms meters to display nonzero readings when the test leads are disconnected from a circuit or are shorted together For volts and amps crest factor of lt 3 at 3000 counts decreasing linearly to 2 at full scale AC volts and AC amps are dc coupled 2 10A for 15sec each 15min maximum 2 2 5 Resistance Range Accuracy of Reading Counts 4000 4k0 40k
3. DT 2844R 4000 COUNTS AUTO RANGE AC DC TRUE RMS DIGITAL MULTIMETER tape MIAN oe ES A AuTO APO DH OL OL ES Il 4000 Count DIGITAL MULTIMETER SELECT RANGE ma ho Al E 0000 l i O i i tl EN AutoPowerOFF 4 A I ii OD aar ci F Hz O MAXMIN gt t HADUTY ne 44 GA N Nes MA com vokst ra h 1 ATIONSAFETY INFORM SAFETY SYMBOLS iB Warning Dangerous Voltage Risk of electric shock A Caution Refer to the user s manual before using this Meter 8 Double Insulation Alternating Current AC Direct Current DC Either DC or AC Ground maximum permitted voltage between terminal and ground Gi US Safety Standard European Safety Standard The symbol indicating separate collection for electrical and electronic equipment A The RESPONSIBLE BODY shall be made aware that if the instrument is used in a manner not specified by the manufacturer the protection provided by the instrument may be impaired The finger or any part of your body shall not be beyond the barrier of the test probe when measuring Individual protective equipment must be used if HAZARDOUS LIVE parts in the installation where measurement is to be carried out could be ACCESSIBLE The following safety information must be observed to insure maximum personal safety during the operation at this meter 1 1 Do not operate the meter if the body of meter or the test
4. Q 400KQ 4MO 1 0 2 40MQ 2 0 3 Overload protection 250V DC or AC rms 2 2 6 Capacitance Range Accuracy of Reading Counts 40nF 3 0 10 400nF 4puF 2 5 5 40uF 5 0 10 400uF 4000uF 20 0 20 Overload protection 250V DC or AC rms 2 2 7 Diode and Audible continuity test Range Description Test condition Display read approximately Forward DC current approx 0 4mA HE forward voltage of diode Reversed DC voltage approx 2 8V Built in buzzer sounds if Open circuit voltage resistance is less than 1000 approx 0 5V Overload protection 250V DC or AC rms 2 2 8 Frequency Range Accuracy of Reading Counts 10Hz 10MHz 0 1 5 Sensitivity sine wave 0 6V rms 10MHz 1 5V rms Overload protection 250V DC or AC rms 2 2 9 Duty cycle 0 1 99 9 2 0 2 Frequency lower than 10kHz Sensitivity sine wave 0 6V rms Overload protection 250V DC or AC rms 3 OPERATION 3 1 DC Voltage Measurement 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set the selector switch to desired V position 3 Measure the voltage by touch the test lead tips to the test circuit where the value of voltage is needed 4 Read the result from the LCD panel 3 2 AC Voltage Measurement 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set t
5. UTY capacitance and temperature range Caution while using the manual range mode if OL sign appears on the display immediately set range to a higher 3 12 Back Light On any range press the HOLD key over 2 seconds to light the back light press it again for more than 2 seconds to wink the light The light can wink automatically after 10 seconds too 4 Battery replacement 1 When the battery voltage drop below proper operation range the p symbol will appear on the LCD display and the battery need to changed 2 Before changing the battery set the selector switch to OFF position Open the cover of the battery cabinet by a screwdriver 3 Replace the old battery with the same type battery 4 Close the battery cabinet cover and fasten the screw Caution Dispose the used batteries according to the rules which are defined by each community 5 Fuse replacement 1 This meter is provided with a 0 5A 250V fuse to protect the current measuring circuits which measure up to 500mA with a 10A 250V fuse to protect the 10A range 2 Ensure the instrument is not connected to any external circuit set the selector switch to OFF position and remove the test leads from the terminals 3 Remove the screw on the battery cabinet cover to open the battery cabinet cover then remove the three screws on the bottom case and lift the bottom case Replace the old fuse with the same type and rating 5X 20mm 0 5A 250V or 6 3 X 25
6. eeds 10 minutes without switching mode and pressing key the meter will switch to standby mode Press any key to exit standby mode When restart the system press and hold SELECT key to disable auto power off Safety standards ETL CE EMC LVD CAT III 600V The meter is up to the standards of IEC1010 Double Insulation Pollution Degree 2 Overvoltage Category M Operating environment Temperature 32 to104 F 0 C to 40 C Humidity lt 80 RH Storage environment Temperature 4 to140 F 20 C to 60 C Humidity lt 90 RH Power supply One standard 9 volt battery NEDA 1604 IEC 6F22 or equivalent Dimension 165 H x 83 W x 36 D mm Weight Approx 360g including battery 2 2 ELECTRICAL SPECIFICATIONS Accuracies are of reading number in last digit at 23 5 C lt 75 RH 2 2 1 DC Voltage Range Accuracy of Reading Counts 0 4V 4V 40V 400V 0 5 2 600V 0 8 3 Overload protection 600V DC or AC rms Impedance 10MQ More than 100MQ on 400mV range 2 2 2 AC Voltage AC DC True RMS Range Accuracy of Reading Counts DC 45Hz to 500Hz 500Hz to 1kHz 1kHz to 2kHz 0 4V 4V 1 0 3 2 0 3 40V 400V 600V 1 0 3 2 0 3 Impedance 10MQ More than 100MQ on 400mV range Overload protect 600V DC or AC RMS 1 All ac ranges are specified from 1 to 100 of range Below 5 of range add 10 counts In the range 400mV an additional 2mV
7. he selector switch to desired Vae position 3 Measure the voltage by touch the test lead tips to the test circuit where the value of voltage is needed 4 Read the result from the LCD panel 5 Press Hz DUTY key to measurement frequency or duty cycle 3 3 DC and AC Current Measurement 1 Connect the black test lead to COM socket For measurement up to 400mA connect the red test lead to the AmA socket for measurement from 400mA to 10A connect the red test lead to the 10A socket 2 Set the selector switch to desired PARN mA or ARG position 3 Press SELECT key to choose DC or AC measurement 4 Remove power from the circuit under test and open the normal circuit path where the measurement is to be taken Connect the meter in series with the circuit 5 Read the result from the LCD panel 6 On AC range press Hz DUTY key to measurement frequency or duty cycle 3 4 Resistance Measurement 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set the selector switch to desired R gt F position 3 Press SELECT key to choose Resistance measurement 4 Connect tip of the test leads to the points where the value of the resistance is needed 5 Read the result from the LCD panel Note When take resistance value from a circuit system make sure the power is cut off and all capacitors need to be discharged 3 5 Capacitance Measu
8. lead look broken 1 2 Check the main function dial and make sure it is at the correct position before each measurement 1 3 When making current measurements ensure that the circuit not live before opening it in order to connect the test leads 1 4 Do not perform resistance capacitance temperature diode and continuity test on a live power system 1 5 Do not apply voltage between the test terminals and test terminal to ground that exceed the maximum limit record in this manual 1 6 Exercise extreme caution when measuring live system with voltage greater than 60V DC or 30V AC 1 7 Change the battery when the E symbol appears to avoid incorrect data 1 8 Use the DMM indoor altitude up to 2000m and temperature 5 C to 40 C Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C 1 9 In locations subject to radio frequency interference the product may malfunction and it resets automatically when leaving this environment 2 SPECIFICATIONS 2 1 GENERAL SPECIFICATIONS Display LCD with a max reading of 4000 Range control Auto range amp Manual range control Polarity Automatic negative polarity indication Zero adjustment Automatic Overrange indication The OL or OL display Low battery indication Display E sign Data hold Display DH sign Relative measurement Display A sign Auto Power Off Display APO sign When measurement exc
9. rement 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set the selector switch to desired 2 DF position 3 Press SELECT key to choose Capacitance measurement 4 Connect tip of the test leads to the points where the value of the capacitance is needed 5 Read the result from the LCD panel Note a Before testing discharge the capacitor by shorting its leads together Use caution in handing capacitors because they may have a charge on them of considerable power before discharging b Before testing press RELA key to eliminate the zero error c When testing 4000uUF capacitor note that there will be approx 30 seconds time lag 3 6 Diode and Audible continuity Test 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set the selector switch to desired 2 IF position 3 Press SELECT key to choose Diode or Audible continuity measurement 4 Connect the test leads across the diode under measurement display shows the approx 4 forward voltage of this diode 5 Connect the test leads to two point of circuit if the resistance is lower than approx 100Q the buzzer sounds Note Make sure the power is cut off and all capacitors need to be discharged under this measurement 3 7 Frequency and Duty cycle measurement 1 Connect the black test lead to COM socket and red test lead to the VQHz socket 2 Set the selector switch
10. to desired Hz position 3 Press Hz DUTY key to choose Frequency or Duty cycle measurement 4 Connect the probe across the source or load under measurement 5 Read the result from the LCD panel 3 8 Data Hold On any range press the HOLD key to lock display value and the DH sign will appear on the display press it again to exit 3 9 MAX MIN Hold Press the MIN MAX key to lock MAX or MIN value and the MAX or MIN sign will appear on the display press it over 2 seconds to exit lt can not display bar graph on MAX MIN HOLD mode 3 10 Relative measurement Press the RELA key you can measure the relative value and A sign will appears on the display the auto range mode be changed to manual range mode Press it again to exit relative measurement and A sign disappears but you can not go back to auto range mode This function is non effective on Hz DUTY measurement It can not display bar graph on Relative measurement mode 3 11 Auto Manual range The auto range mode is a convenient function but it might be faster to manually set the range when you measure values that you know to be within a certain range To select manual range repeatedly press RANGE key until the display shows the desired range The range steps upward as you press RANGE key The meter will go back to auto range mode when you press RANGE key for more than 2 seconds It can not select manual range mode on Hz D
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