Instruction Manual
Contents
1. METRAVI 23smkit POWER AS OFF 2k 20k 200k 44 po eT HOLD O09 OPERATION MANUAL2. 1 SUMMARIZE The instrument is a steady performance battery driven digital 4 1 2 digit digital multimete It uses the LCD with 39 5mm high figure to make the reading clear The function of 5 sec Backlight displaying and overload protection make operation more converient The instrument has the function of measuring DCV ACV DCA ACA resistance capacitance temperature and frequency diode and contin uity performance tset It adops double intergral A D converter as its core itis an excellent tool for labs factories and radi technology 2 SAFETYNOTE This instrument is designed according to EC1010 standard safety standard issued by IEC Please read the manual before operation 1 Do not input a over range value when measuring 2 Voltage less than 36V is a safety voltage When measuring voltage higher than DC 36V AC 25V check the connection and insulation of test leads to avoid electric shock 3 Be sure to keep the test leads off the testing points when switching function and range 4 Select correct function and range to avoid fault operation you may still be careful to ensure the safety even the meter has all range protection function 5 Please do not measuring before battery isn t installed and back cap is not firm 6 Please do not input voltage when measuring resistance 7 Please move the test leads away from test points and turn off the power before replacing batter fuse 8 Introduction for safety symbol A
3. 200mV 1000V DC or 750V AC effective value B ACV TOO TmvV 0 8 rdg 25dgt 1000V DC 750V AC RMS 20V 200V 10mV Input impedance All range is 10MQ Overload protection 1000V DC or 750V AC effective value Frequency response 40 400 Hz range under 200V 40 200 Hz for range 750V Displaying Sine wave rms Average value response C DCA 0 01uA 0 1uA 0 5 rdg 4dgt Max measurement voltage drop 200mV Max input current 20A within 10 seconds Overload protection 0 2A 250V resettable fuse 20A measuring range 15A 250V time lag fuse 0 2A 250V MAX D ACA 20mA 1uA 20ma iua 1 5 rdg 25dgt 0 2A 250V MAX 200m 2 5 rdg 35dgt 15A MAX Max measurement voltage drop 200mV Max input current 20A within 10 seconds Overload protection 0 2A 250V resettable fuse 20A measuring range 15A 250V time lag fuse Frequency response 40 200 Hz Display Sine wave RMS Average value response E Resistance Q 2009 0 010 0 4 rdg 10dtg 10 20KQ 1 0 4 rdg 5dtg effective 1000 5 0 Reading Open circuit less than 3V Overload protection 250V DC or AC effective value a At range 2000 short circuit the test leads to measure the wire resistance then subtracts it from the real measurement b At range200MQ when the test leads short circuit LCD display 1 0MQ It is normal and doesn t affect the accuracy Please deduct the value from the real measur
4. from water dust and shock 2 Do not store and operate the meter under the condition of high tem perature high humidity combustible explosive and strong magnetic place 3 Wipe the case with a damp cloth and detergent do not use abrasiv es and alcohol 4 If do not operate for a long time should take out the battery to avoid leakage A When E41 signal displays should replace the battery following the steps a Unlock the button and remove the battery case b Take out the old battery and replace the new one It is better to use alkaline battery for longer life c Fit on the battery case and lock the button B Fuse change When replacing fuse please change another same type and specification fuse 6 If the meter does not work properly check the meter as following Conditions Way to solve E Turn on the power E Set the HOLD key to a correct mode E Replace battery signal appears E Replace battery No current or temperature input li Replace fuse Big error Value No reading on LCD E Replace battery 10 The specifications are subject to change without notice The content of this manual is regarded as correct error or omits Pls Contact with factory We hereby will not be responsible for the accident and damage caused by improper operation The function stated for this User Manual cannot be the reason of special usage 11 DIGITAL MULTIMETER Metravi 23SmkIl
5. is a remained value on LCD before capa citance measurement and it doesn t affect the measurement When measuring at large capacitance range if capacitor is crept bably or broken LCD displays some unstable value Release the capacitor completely before measuring capacitance Unit 1uF 1000pF 1nF 1000pF 4 8 Diode and Continuity performance test 1 Insert the black test lead into the COM jack and the red one into the v Q gt jack the polarity of red lead is 2 Set the knob fo range 3 Forward test the red test lead connect to the positive of the tested the red test lead connect to diode positive polarity and black test lead connect to diode cathode polarity the reading is the approx Value of diode forward volt drop 4 Reverse test connect test leads with the diode under tested the red test lead connect to diode cathode polarity and the black test lead connect to diode posotive polarity 1 will be displayed on LCD 5 Insert test leads to two points of tested circuit if the inner buzzer sounds and turn on light the resistance is less than 70 20 Q 8 4 9 Frequency Measurement 1 Insert the red or shield cable in to the COM jack and the black one in to the VQ gt jack 2 Set the knob to frequency range connect test leads or shielded cable crossly to the signal source or the lead which is test NOTE The meter can still work if the input value is higher than 10V ef
6. d range 7 Voltage resistance frequency and diode jack 8 GND the anode jack of test capacitance and temperature 9 Jack for measuring current 20A 10 Jack for the cathode of capacitance temperature and current lower than 200mA 4 2 DCV measurement 1 Insert the black test lead into the COM jack and the red one into the VQ gt jack 2 Set the bnob to a proper DCV range and connect the leads crossly to the electric circuit under test LCD displays polarity and voltage under test connected by the red test lead NOTE Firstly users should select the knob to the highest range if users had no idea about the range of voltage under test and then select the proper range based on displaying value If LCD lead displays 1 it means meter is over the max Value of range thus should select the knob to a higher range Do not input a voltage over DC 1000V Be careful while measuring a high voltage don t touch the high circuit 4 3 ACV measurement 1 Insert the black test lead into the COM jack and the red one into the VQ jack 2 Select the knob to a proper ACV range and then connect the leads crossly to the electric circuit under test NOTE Firstly users should select the knob to the highest range if users had no idea about the range of voltage under test and then select the proper range based on displaying value If LCD displays 1 it means meter is over the max value
7. ement F Capacitance F 20nF 1pF er E l aioin 100pF effective 200uF 3 8 rdg 20dgt value Testing frequency 400Hz Overload protection 36V DC or AC effective value G Frequency Hz Range 20KHz 200KHZ Input sensitivity 2V effective value Accuracy Overload protection 250V DC AC effective value Resolution 3 0 rdg 150dgt Overload protection 36V DC or AC effective value within 10 sec H Diode and continuity performance test meroa the positive DC 7 current is approx Positive voltage 1mA negative drop of diode 36V DC AC voltage is approx 3V effective open voltage is Buzzer sounds the resista Value approx 3V nce is less than 70 20 Q Overload protection 250V DC or AC effective value CAUTION Do not input voltage at this range Temperature C 0 8 rdg 40dgtyS400 C 20 1000 C 01C 1 5 rdg 150dgt 2400 C K type Thermoelement banana plug type temperature 20 250 C 4 OPERATION 4 1 Panel description 1 LCD display the measuring value POWER turn on off the power 28 turn on off the back light Continuity testing indicator HOLD key press it the presently measured value is held on LCD and H symbol displays press it again H symbol disappears and the meter is exited the holding mode METRAVI 238mxit ne aa 2 3 4 5 Se on 6 knob to select measuring functio an
8. exists high voltage A must refer to manual GND eS dual insulation 3 CHARACTERISTIC 3 1 General Displaying LCD dispaying Max indication 1999 4 1 2 digits auto polarity indication Measuring method double integral A D conversion Sampling rate approx 3 times sec Over range display 1 displays in the highest digit Low battery display 3 Working environment 0 40 C relative humidity lt 80 Power supply one 9V battery NEDA 1604 6F22 or equivalent Dimension 190x94 5x39 5mm length width height Weight approx 400g including 9V battery Accessories test leads user manual temperature probe holster gift box and 9V battery 3 2 Technical characeridtic 1 Accuracy a xrdg dgt environment temperature at 23 5 C relative humidity lt 75 one year guarantee since production date 2 Performance Measuring DCV ACV DCV ACA resistance Q capactiance C frequency f temperature T diode continuity performance testing with auto power off backlight and data hold function 3 Technical Parameter low battery SHOOANDABRWN a 2 A DC Volt DCV Range Resolution Accuracy Overload protection 200mMV 10uV 2V 100uV JV TN 0 1 rdg 5dgt 1000V DC 750V AC RMS 200V 40mV 1000V 100mv 0 2 rdg Sdgt 2 Input resistance All range is 10MQ Overload protection 250V DC or AC effective value for range
9. fective but the accruacy is not guaranteed It noise environment you did better use shield cable to measure a low signal when measuring high voltage circuit Don t touch the high voltage circuit Don t input voltage higher than 250V DC ro AC effective value or it may damage the meter 4 10 Temperature Measurement Select the knob to the C range i insert the cathode black pin of cold end free end of thermocouple into mA jack anode red pin into COM jack put the working end temperature measruement port of thermocouple on the surface or inside the object to be tested Then you can read temperature from the screen and the data is in Centigrade If using the testing accessory please insert testing accessory int COM and mA COM for anode and mA for cathode 4 11 Date Hold Press the Hold switch the pressently measrue value is held on LCD press it again and the function is cancelled 4 12 Auto power off The meter will be into sleeping mode when it is out of work for 20 0 minutes press POWER key twice to restart the power 4 13 Backlight Press e key to turn on the backlight and it will turn off after 5 seconds NOTE When turning on backlight the working current will be enlarged it leads to shorten battery usage and enlarge accuracy error of some functions 5 MAINTENANCE Do not try to modify the electric circuit 1 Keep the meter away
10. of range thus should set the knob to a higher range Do not input a voltage over 750V effective Be careful while measuring a high voltage don t touch the voltage circuit 4 4 DCA Measurement 1 Insert the black test lead into the COM jack and the red one into the mA jack the Max 200mA or to 20A the max 20A 2 Set the knob to a proper DCA range and connect the leads crossly to the electric circuit under test LCD displays polarity and current under test connected by the red test lead NOTE Firstly users should selectt the knob to the highest range if users had no idea about the range of current under test and then select the proper range based on displaying value f the LCD displays 1 means the current is over range thus should select the knob to g higher range Max input current is 200mA or 20A subject to where the red test insert to too large current will damage the fuse 4 5 ACA Measurement 1 Insert the black test lead into the COM jack and the red one into the mA jack the Max 200mA or to 20A the Max 20A 2 Selectt the knob to a proper ACA range and connect the leads crossly to the electric circuit under test NOTE Firstly users should set the knob to the highest range if users had no idea about the range of current under test and then select the proper range based on displaying value If the LCD displays 1 it means the current is over
11. range thus should select the knob to g higher range Max input current is 200mA or 20A subject to where the red test lead insert to too large current will damage the fuse 4 6 Resistance Measurement 1 Insert the black test lead into the COM jack and the red one into the VQ Pack 2 Set the knob to a proper resistance range and connect the test leads crossly to the resistor under test NOTE The LCD displas 1 while the resistance is over the selected range The knob should be adjusted to higher range When measuring value is over 1MQ the reading will take a few seconds to be stable It is normal for high resistance measuring When input terminal is in open circuit overload displays When measuring in line resistor be sure that the power is off and all capacitors are released completely Do not input any voltage at resistance range even the meter has voltage protection functions at this range 4 7 Capacitance Measurement 1 Set the knob to proper capacitance range and insert the measuring accessories or test leads into COM and mA jack COM terminal is for positive pole mA terminal is 2 Connect test leads with the two points of capacitor be wary of polarity if necessary NOTE If the capacitance under tested is over the max value of selected range LCD displays 1 thus should set the knob to a higher range It is norminal that there
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