digital multimeter km 6050 - Kusam Electrical Industries Ltd.
Contents
1. AC Current or Voltage gt Diode C Buzzer FF Low Battery AN Cautions Double Insulation Earth Ground L A N Danger High Voltage 1 i PNE eNPN 20A mA VOHz COM A B Sde LCD display Function range selection Test lead jack Power switch Triode measurement jack Test lead jack resistance board Backlight button Test leads socket VQ Hz Capacitance Socket 0 Data Hold 2 O 0 No A E o Na Le m kusam meco 7 MEASUREMENT PROCEDURE Press POWER key If the battery is low E symbol will display on the left top of LCD Now you need to replace the battery Select the function and range needed 1 DC Voltage Measurement 1 Set the function range switch in DCV range 2 Insert the black test lead into COM jack and the red test lead into exposed test lead jack VQ Hz jack Connect the test lead to the tested load or the signal resources in parallel The meter will indicate the polarity of the red test lead at the same time as it indicates the voltage reading kusam meco Remark A If the tested voltage value is unknown you should select the highest range B When only 1 occurs it means the input2. E KUsam meco TABLE OF CONTENTS 1 GENERAL DESCRIPTION KM 6050 Digital Multimeter is featured with precise design convenient operation high performance multifunction a new protection holster and big LCD SAFETY iore Ae 1 display To avoid improper operation the current jack applies mechanical protection device Only when you select current measurement the mA or CAUTION amp SAFETY SYMBOL 2 20A jack is open accordingly Otherwise this jack is closed to avoid inserting the test lead wrong VQ Hz is equipped with PTC heat sensitive element at the input terminal and this has efficient protection for the Function Range switch You can select different models to measure DCV DCA ELECTRICAL SPECIFICATION 4 ACV ACA Resistance Capacitance Frequency Temperature Diode hFE and Continuity This ELECTRICAL SYMBOLG ccsccsscsssestesseesesees 8 type can be applied in engineering project experiment test production test work in the open air and electrical repairs etc TITLE PAGE GENERAL SPECIFICATION ceeeeseeeeee 3 MULTIMETER STRUCTURE c ceeeeeeeees 9 2 SAFETY PRECAUTIONS AND PROCEDURES MEASUREMENT PROCEDURE 0000000 10 1 For your own safety and that of the apparatus you must read and follow the procedure described in this instruction manual MAINTENANCE oye sieitesreientcned eras 23 2 Never use the instrument before replacing the back cover or h
3. C You should turn off the power when measuring resistance in the circuit and discharge the capacitors on the tested circuit D 200MQ position there are about 10 digits when the red amp black test leads are in short circuit Deduct these digits from the reading when measuring 6 Capacitance measurement Capacitor cx 1 Set the function range switch on the range position needed waiting for the meter s Auto zero calibration It is normal that about 10 digits are left in 2 nF 2 Discharge the capacitor 3 Insert the capacitor under test into Cx jack and measure It doesn t need the test lead Remark AN A Discharge the loaded capacitors and then measure B It takes more time when measuring big capacitors C Measurement unit 1pF 10 uF 1nF 10 pF D Don t insert the capacitors with high voltage into the test jack direct 7 Frequency Measurement a 20A mA VOHz COM i E COG Qi Black Red 1 Set the function range switch on Hz position 2 Insert the black test lead into COM jack and the red test lead or the cable into the test lead jack VQ Hz jack Remark A A Never supply the voltage over 250V to the input terminal If the voltage value is 1000V RMS you can get the measurement result but that will exceed the accuracy rang
4. A KK kusam meco WARRANTY Each KUSAM MECO product is warranted to be free from defects in material and workmanship under normal use amp service The warranty period is one year 12 months and begins from the date of despatch of goods In case any defect occurs in functioning of the instrument under proper use within the warranty period the same will be rectified by us free of charges provided the to and fro freight charges are borne by you This warranty extends only to the original buyer or end user customer of a KUSAM MECO authorized dealer This warranty does not apply for damaged Ic s fuses burnt PCB s disposable batteries carrying case test leads or to any product which in KUSAM MECO s opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation or handling KUSAM MECO authorized dealer shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of KUSAM MECO KUSAM MECO s warranty obligation is limited at option free of charge repair or replacement of a defective product which is returned to a KUSAM MECO authorized service center within the _ warranty period m kusam meco THIS WARRANTY IS BUYER
5. It is a precise electronic multimeter Please take care to do the maintenance well 1 Don t connect to the voltage over 1000 DCV or 1000ACV 2 Don t forget to pull out the test lead before turning the function range switch so as not to damage the mechanical protection system 3 Don t use the meter before replacing the back cover of it 4 Battery replacement Pull out the test lead and turn off the power before replacing the battery 5 Fuse replacement Press the off key to turn off the instrument and disconnect the test leads from the input terminals Remove the back cover screws and open the back cover Replace the fuse fuses with new fuse of the same type and rating 0 2A 250V 6 Remove the battery and put it in a dry and airy place if the meter is not used for along time 7 Don t change the inner circuit to avoid damage the meter ory gt kusam meco ACCESSORIES User s Manua One Holster One pair test lead D MUMBAI TEST CERTIFICATE DIGITAL MULTIMETER This Test Certificate warrantees that the product has been inspected and tested in accordance with the published specifications The instrument has been calibrated by using equipment which has already been calibrated to standards traceable to national standards MODEL NO KM 6050 SERIAL NO DATE cN ISO 9001 KUSAM MECO REGISTERED
6. S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE KUSAM MECO SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA ARISING FROM ANY CAUSE WHATSOEVER All transaction are subject to Mumbai Jurisdiction G 17 Bharat Industrial Estate T J Road Sewree W Mumbai 400 015 INDIA Sales Direct 022 24156638 Tel 022 24124540 24181649 Fax 022 24149659 Email kusam_meco vsnl net Website www kusamelectrical com www kusam meco co in
7. Xx exe KX KX KH HK LIST OF PRODUCTS Digital Multimeter Digital AC amp AC DC Clampmeter AC Clamp Adaptor AC DC Current Adaptor Transistorised Electronic Analog amp Digital Insulation Resistance Testers upto 10 KV Digital Sound Level Meter amp Sound Level Calibrator Digital contact amp Non contact Type Tachometer Digital Non contact infrared Thermometer Thermo Hygrometer Thermo Anemometer Wood amp Paper Moisture Meter Distance Meter Digital Hand Held Temperature Indicators Digital Lux Meter Network Cable Tester Power Factor Regulator Maximum Demand Controller Digital Power Meter Earth Resistance Tester 17 Bharat Industrial Estate T J Road Sewree W Mumbai 400015 INDIA Sales Direct 24156638 Tel 022 2412 4540 2418 1649 Fax 2414 9659 E mail kusam_meco vsnl net Website www kusamelectrical com www kusam meco co in An ISO 9001 2008 Company DIGITAL MULTIMETER KM 6050 OPERATION MANUAL Le Cee TAKE MEASUREMENT CAREFULLY AND YOU LL SPARE YOUR METER AND YOURSELF SOME PAIN Nearly every electrical engineer has a hand held Multimeter We sometimes take them for granted until we damage them or burn them out If you incorrectly connect your DMM to a circuit or have the DMM on wrong setting you damage the meter and possibly hurt yourself You can also get into trouble if you try to measure the voltage across a cha
8. voltage has exceeded the selected range please select a higher range C N indicates not to measure voltage over 1000V Although it may display the digit it may damage the meter D Take extreme care when measuring high voltage 2 AC Voltage Measurement 1 Set the function range switch on ACV range 2 Insert the black test lead into COM jack and the red lead into exposed test lead jack VQ Hz jack Connect the test lead to the tested load or signal Le __ kusam meco Remark A Refer to DCV measurement remarks A B C D B AN indicate not to measure the voltage over 1000V Although it is possible to display the reading it will probably damage the meter 3 DC Current Measurement Load 1 i i i i i i i i i i i i i i i n e 20A mA VOHz COM 1 Remove the test lead and set the function range switch on DCA range 2 Insert the black test lead into COM jack and the red one into the exposed test lead jack mA jack or 20A jack Connect the test lead to the tested circuit in series The meter will indicate the polarity of the red test lead at the same time as the meter indicate the current reading D Remark A If the current value is unknown before measurement select the highest range B When only 1 occur that indicates the tested curre
9. V 10 mV 1000 V 0 1 5 100 mV Input impedance 10MQ Overload protection 250V for 200mV DC or AC peak value 1000V for other ranges AC VOLTAGE Range Accuracy Resolution 2 V 100 pV 20 V 0 8 10 1 mV 200 V 10 mV 1000 V 1 2 15 100 mV Input impedance 2MQ Frequency Range 40Hz 400Hz Overload protection 250V for 200mV DC or AC peak value 1000V for other ranges Display Average value Sine RMS DC CURRENT Range Accuracy Resolution 2 MA 0 5 2 100 nA 20 mA 1 pA 200 mA 0 75 5 10 pA 20 A 2 10 1 mA Overload protection 0 2A 250VFuse Max input current 20A 15 seconds max Voltage drop measurement Full range voltage drop 200mV AC CURRENT Range Accuracy Resolution 2 mA 0 8 10 100 nA 20 mA 1 uA 200 mA 1 5 10 10 uA 20 A 2 10 1 mA Overload protection 0 2A 250VFuse Max input current 20A 15 seconds max Voltage drop measurement Full range voltage drop 200mV Frequency Range 40Hz 400 Hz Display Average Value Sine RMS Le E Kusam meco RESISTANCE Range Accuracy Resolution 200 Q 0 2 5 0 01 Q 2 KQ 0 1 Q a 0 2 1 200 KQ 10 Q 2 MQ 100 Q 20 MQ 0 5 5 1 KQ 200 MQ 0 5 10 10 KQ Open circuit Voltage
10. kusam meco __ 3 GENERAL SPECIFICATIONS HM Low power consumption CMOS double integration A D transform integrated circuit Auto zero Calibration Auto polarity display Data hold low battery and Over range indication HM DCBasicAccuracy 0 05 HM Capacitance measurement 0 1 200uF H Test lead jack mechanical protection function and full range over load protection function H Auto power off function The meter will shut off automatically about 15minutes after power is on to avoid forgetting to turn off the meter after using it HM Maxreading 19999 4 HM LCD Display 70 x 48mm big screen high contrast Word height 28mm E Power one 9V battery cir H Low battery indication will occur on the left top of the LCD H Dimension 192 x 88x 42mm MH Weight approx 400g including battery and holster E Environmental condition Operation Temperature 0 C 40 C Relative Humidity lt 85 Storage Temperature 10 C 50 Relative humidity lt 85 Ke kusam meco 4 ELECTRICAL SPECIFICATIONS Accuracy reading digit one year warranty Environment temperature 23 C 5 C Relative humidity lt 75 m kusam meco _ DC VOLTAGE Range Accuracy Resolution 200 mV 10 aV 2 V 40 05 5 100 py 20 V 1 mV 200
11. aving the risk of electronic TEST CERTIFICATE 25 shock 7 3 If any unusual condition of testing end and attachment of the meter such as breakage WARRANT Yanone a tnt 26 deformation fracture foreign substance no display etc do not conduct any measurement You must first take out the test leads before changing to different current measuring positions and then turn the function range switch so as to avoid damaging mechanical protection device E KK E kusam meco 5 Never input signal level exceeding the limit value to avoid shock or damaging the instrument 6 Asa Don t turn the function range switch when taking measurement 7 The potential difference between the measurement common terminal COM and earth should not exceed 1000V to avoid electric shock 8 er Take extreme care if the tested voltage is over DC 60V and AC 42V to avoid electric shock 9 When symbol occurs on the LCD it indicates low battery Battery should be replaced to ensure measurement accuracy 10 Fuse inside must be in a good condition and they must be replaced if necessary with an indentical model Terms in this manual Warning Identifies conditions and actions that could result in serious injury or even death to the user Caution Identifies conditions and actions that could cause damage or Malfunction in the instrument M PO ee E
12. e of the meter _ m kusam meco a kusam meco 716 B Ifthe tested signal is too strong you should use the external attenuation so as not to damage the meter C Working in the noisy place you had better use the shielded cable if you measure the small signal 8 Transistor hFE parameter measurement Insert Leads in this socket PNP NPN E PNP NPN K a e a aS 1 Set the function range switch on hFE position 2 First make sure the hFE is PNP type or NPN type and then insert the leads E B C into the respective sockets of the meter 3 The meter displays approx hFE value The measurement condition is base current is approx 10uA Vce approx 2 8V _ f AEE EAR Femina eae Black Red i i i i i i i i i i i i i i i i i i i i i i i i Ko if Ke a EPEE EN EEE iene E 1 Set the function range switch on the gt position 2 Insert the black test lead into COM socket and the red test lead into the exposed test lead socket VQ Hz jack and pay attention that the inner power of the red test lead is polarity Connect the red test lead to the two ends of the tested Diode and the meter display Diode s Forward way voltage drop The unit is vol
13. lt 1V 2 8V in the 200MQ position Note It is normal that the test lead short circuit displays approx 10 digits in the 200MQ reading when measuring CAPACITANCE Range Accuracy Resolution 2 nF 0 1 pF 20 nF 2 5 10 tHE 200 nF 10 pF 2 pF 100 pF 200 uF 5 3 10 nF Frequency measurement Approx 400Hz Voltage measurement Approx 40mV Overload protection 250V DC or AC peak value position Please deduct these 10 digits from E KUSAM meco FREQUENCY Range Accuracy Resolution 20 kHz 2 5 1Hz Voltage Protection 250V DC or AC peak value Input sensitivity 150 mV RMS TRIODE HFE PARAMETER MEASUREMENT Range Description Test Condition hFE It can measure NPN or 1b approx PNP type transistor 10A triode hFE parameter Vec approx Indication range 0 1000 2 8V DIODE AND CONTINUITY MEASUREMENT Range Description Test Condition Forward way Indicate approx current is approx oo forward voltage 1mA contray drop of diode way voltage is approx 2 8V The buzzer inside sounds when Open Circuit C continuity Voltage is Resistance is approx 2 8V lt 30 Q Overload protection 250V DC or AC peak value ee a Le i PO ee kusam meco ELECTRICAL SYMBOLS 6 MULTIMETER STRUCTURE DC Current or Voltage
14. nt has exceeded the selected range You should select a higher range C When doing mA jack input overload may melt the fuse inside Now replace the Fuse The Fuse specifications is 0 2A 250V D When doing 20A jack input time for inputing the highest current 20A should not exceed 15 seconds 4 AC Current Measurement Load 1 Remove the test lead and set the function range switch on ACA range position Refer to DCA measurement 1 2 Insert the black test lead into COM jack and the red test lead into the exposed test lead jack mA jack or 20A jack Connect the test lead to the tested circuit in series Remark Refer to DCA measurement remarks A B C D 5 Resistance Measurement Black Red 1 Set the function range switch on Q range position needed 2 Insert the black test lead into COM jack and the red test lead into the exposed VQHz jack The red test lead is the positive polarity of the measurement circuit Connect the test lead to the two ends of the tested resistance Remark A When doing open circuit input the meter is in the state of over range and only the highest digit 1 is displayed B When the tested resistance is over 1MQ it takes a few seconds to stabilize the reading It is normal for the HQ measurement E KUsam meco
15. rged capacitor KUSAM MECO KM 6050 DMM users frequently burn their meters by trying to measure current the same way as they measure voltage Remember you measure voltage across a circuit and current through a circuit When you use the current input your DMM becomes alow impedance circuit element If you accidentally connect this low impedance path across your circuit you ll effectively short circuit it You can therefore send high current through your meter and severely damage it Unless the meter has a fused input you can even get an explosion or fire Even if you correctly insert your DMM into the circuit you can still damage your meter Don t try to measure current in excess of your meter s capacity Handheld DMMs usually have a maximum current rating of 10A or 20A If you are measuring current in industrial environment you can easily exceed those ratings The best way to avoid damage is to use a clamp meter or to connect a clamp attachment to your DMM To prevent excess current from flowing through your meter always disconnect the test leads from the circuit under test whenever you change DMM functions Set your meter to the correct function say current and its highest range for the setting say 20A Next connect the test leads before you apply power to the circuit To be safe start by setting your meter to its highest range first r a a E kusam meco
16. t It will display over range if the diode is connected in an opposite direction ee kusam meco Remark A When the two test leads are in open circuit state it will display over range only 1 is displayed B Current going through the tested components is approx 1mA 10 Continuity Test HOLD Black Red KK kusam meco 1 Set the function range on C position 2 Insert the black test lead into COM socket and the red one into VQ Hz jack and connect the test lead to the two ends ofthe circuit to be tested 3 If the resistance value between the two points to be tested is below 30Q the buzzer will sound Remark You must cut off the power before you check the tested circuit It will cause the meter to display wrong reading if the circuit is charged 11 Data Hold Function The Hold function allows operator to hold the displayed digital values When this function is enabled the display shows the H symbol The Hold function will be disabled if the Hold key is pressed again or the position of the rotary switch is changed 12 Mechanical Protection Function Before inserting the test lead turn the function range switch in a circle 360 and observe the motion of the resistance board This
17. will help you to get familiar with the meter s function Model KM 6050 digital Multimeter is provided with the mechanical protection function device as follows ee m kusam meco in the following table means the socket is closed The black test lead can be inserted into COM jack Position of Test lead blocked by the Function Range blocking board Switch rt vVaHz mA 20A AC DC Voltage o e AC DC Current Except 20A AC DC Current e e 20A Resistance e J Capacitance F C Triode hFE parameter Frequency Hz e e If you find the rotary switch doesn t move that s because you forget to pull out the test lead Don t force the switch to move You must pull out the test lead before turning the rotary switch or the meter s mechanical protection system may be damaged 720 _ E Kusam meco 13 Backlight Function The meter is featured with backlight function for better use when the environment light is dim Press the LIGHT button to enable the backlight push it again to turn off the light 14 Select the display angle of the meter KM 6050 provided with protection holsters which can support the meter in different angles as well as protect the meter This is convenient to observe the reading 8 MAINTENANCE
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