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Victor VR-81D Operation Manual

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www.victorruoshui.co.kr
DIGITAL MULTIMETER
OPERATION MANUAL
I. General
This is equipped with the LCD display
of text height 18.9mm, is a 3 3/4 digital
multimeter which has the merits of clear
reading,
stable
reliability.
It could be used to measure DC voltage,
AC voltage, DC current, AC current,
resistance, temperature, capacity, frequency /
duty cycle, diode and make on-and-off test.
Meanwhile, it is available for unit symbol
display, automatic/manual range switching,
automatic power off and alarm function. The
complete machine takes an integrated circuit
which
can
microprocessor and double-integrating A/D
이 자료는 저작권법에 따라 보호받는 저작물이므로 무단배포 및 무단복제를 금하며, 내용의 전부
또는 일부를 이용하려면, 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다.
VR-81D
performance
directly
drive
and
high
LCD
8-bit

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Summary of Contents for Victor VR-81D

  • Page 1 DIGITAL MULTIMETER OPERATION MANUAL VR-81D I. General This is equipped with the LCD display of text height 18.9mm, is a 3 3/4 digital multimeter which has the merits of clear reading, stable performance high reliability. It could be used to measure DC voltage,...
  • Page 2 www.victorruoshui.co.kr switching and a digital display drive offering high resolution and high precision. Due to its complete functions, high measurement accuracy and convenient operation, the multimeter is the ideal tool in laboratory and factory as well as for radio fans and family. Ⅱ.
  • Page 3 www.victorruoshui.co.kr III. Safety Considerations The design of meter is in accordance with IEC1010 clause (the safety standard issued International Electrotechnical Commission). Prior to the operation of the instrument, please first read the safety considerations. 1. When DC voltage above 30V, AC voltage above 25V, current above 10mA, AC power line with inductive load or power line during electric fluctuation is measured,...
  • Page 4 www.victorruoshui.co.kr 3. Only if the meter is used with the matched meter pen, can it meet the requirement of safety standard. When the line of the meter pen is damaged, it is necessary to replace another one of the same model or the same electrical specification.
  • Page 5 www.victorruoshui.co.kr replacement, the test leads must leave the measuring point and ensure there is no any signal at the input terminal. 6. When the electrical measurement is made, never let your body gets in touch with the ground directly, and don’t touch uncovered metal terminal, output port, lead clamp and etc.
  • Page 6 www.victorruoshui.co.kr ultimate voltage value is measured. The ultimate voltage value permitted for measurement is marked on the instrument panel, and never measure the value exceeding the standard. Don’t input the ultimate value out of regulation in order to avoid electric shock and the damage to the meter.
  • Page 7 www.victorruoshui.co.kr accordance with LCD display. Please be sure to disconnect the line of the test leads with the measured object first and ensure there is no any input signal. It is forbidden to switch the function/range selection switch during measurement 12.
  • Page 8 www.victorruoshui.co.kr IV. Instrument Panel& Button Function Description 1. Instrument Model Number 2.LCD Display: Display the measured data and unit. 3. Function Button 3.1.SELECT(function 400mA MAX FUSED switch) ： Press this button, the function could switch between DC/AC/ 3.2. RANGE(auto/manual range switch): it’s auto range switch after power-on, press this key switch to manual range.
  • Page 9 www.victorruoshui.co.kr Under the manual range mode , Every pressing to this key will make the range get to upper one.press this key for more than 2 sec. will back to auto range mode . 3.3. HOLD（Data Hold） ：Press this button, the reading is locked;...
  • Page 10 www.victorruoshui.co.kr 5.1.Current, Voltage, Diode, Resistance, Capacity, Frequency, Buzzer, Temperature“-”Input terminal. 5.2.10A“+”input terminal. 5.3.Voltage、Diode、Resistance, Capacity, Frequency, Buzzer, Temperature and “ +” Input terminal with current less than 400mA. V. Other Functions Automatic Power off During measurement, meter will automatically shut down (enter sleeping mode) to save power if function buttons and knob switch are not operated in 15 minutes.
  • Page 11 www.victorruoshui.co.kr mode will be cancelled by pressing the SELECT button to turn turn on the instrument. VI、Property 1．General Property 1-1．Display：LCD 1-2．Max Display：3999（3 3/4）counts automatic polarity display and unit display 1-3．Measuring Method：Dual integral A/D converter 1-4．Sampling Rage：Approx. 3 times / sec. 1-5．Over Range Indication：Display“OL”...
  • Page 12 www.victorruoshui.co.kr Relative Humidity: ＜80% ； 1-9．Power: 2pcs 1.5V batteries (“AAA”7# battery) 1-10．Dimension (size): 145×74×36mm 1-11．Weight: Approx. 190g（Including 2pcs 1.5V batteries） 1-12． Accessories: Instruction Manual (1 pc), Holster (1 pc), Outer packing box (1 pc), 10A test leads (1 pair), K-Thermocouple and 1.5V batteries (2 pcs).
  • Page 13 www.victorruoshui.co.kr 2. The initiate state of the meter is in automatic range status, which shows "AUTO" symbol; 3. Make the test leads contacted to the testing point. The voltage and polarity of the point where the red test lead is contacted will be displayed on the screen.
  • Page 14 www.victorruoshui.co.kr 10mV 400V 100mV 600V ±(1.0%+4d) Input Impedance: 400mV>40MΩ; 10MΩ at other Ranges. Overload Protection: 600V DC or 600V AC Peak Value. 2-2-2. ACV True RMS 1. Insert black test leads into the hole of “COM” and red one into " ";...
  • Page 15 www.victorruoshui.co.kr point. The voltage of the point where the red pen is contacted will be displayed on the screen. Caution: 1. Don't measure voltage over 600V. Otherwise, there is a danger of meter being damaged. 2. When measuring high voltage, special attention should be given to personal safety and avoid your body getting in touch with high voltage circuit.
  • Page 16 www.victorruoshui.co.kr Frequency Response: (50～200) Hz; Display: Average value response (RMS of sine wave). 2-2-3. DCA 1. Insert the black test lead into the "COM" input terminal and red one into the " " input terminal. (Max 400mA), or 10A input terminal (Max 10A). 2.
  • Page 17 www.victorruoshui.co.kr the tested current value has exceeded the present range limit, please select higher range to complete the measurement. 2. The Max input value is 400mA or 10A.(Depending on the terminal where the red test lead is contacted) Range Accuracy Resolution 400uA 0.1uA...
  • Page 18 www.victorruoshui.co.kr 2-2-4. ACA True RMS Insert the black meter pen into the "COM" input terminal and red one into the " " input terminal. (Max 400mA), or 10A input terminal (Max 10A). Rotate function switch to Current gear. Press “SELECT” button to select the AC measurement mode.
  • Page 19 www.victorruoshui.co.kr range to complete the measurement. 2. The Max input value is 400mA or 10A.(Depending on the terminal where the red test lead is contacted) The overrated current will lead to fuse melt or even damage the meter. Range Accuracy Resolution 400uA 0.1uA...
  • Page 20 www.victorruoshui.co.kr 2-2-5. Resistance (Ω) 1. Insert the black meter pen into "COM" terminal and red one into " " terminal. 2. Rotate the Range to “Ω” gear. Cross connect the test leads to the tested resistor. 3. When measuring the low resistance, please short-circuit the meter pens at first to test the wire resistance, and then deduct it from the actual resistance.
  • Page 21 www.victorruoshui.co.kr 2. When the input terminal is open circuit, it will display “OL”. 3. When measuring in-line resistor, be sure that the power is off and all capacitors are discharged completely. Accur Range Resolution 400Ω ±(0.8%+5d) 0.1Ω 4kΩ 1Ω 40kΩ 10Ω...
  • Page 22 www.victorruoshui.co.kr short-circuit the meter pens at first to test the wire resistance, and then deduct it from the actual resistance. 2-2-6.Diode and Continuity Test 1. Insert the black meter pen to “COM” terminal and the red one to “ ” terminal.
  • Page 23 www.victorruoshui.co.kr test lead to the diode negative polarity and the black one to the diode positive polarity. "OL" symbol will be displayed on the screen. 5. The complete diode testing includes forward and backward measurement, if the result does not meet the above; it means the diode is bad.
  • Page 24 www.victorruoshui.co.kr of Diode 0.5mA， Backward Voltage is Approx. 1.5V Buzzer makes Open circuit a long sound voltage is Approx. if resistance is 0.5V less than 50Ω Overload Protection: 250V DC or AC Peak Value. CAUTION: DO NOT INPUT VOLTAGE AT THIS RANGE! 2-2-7.
  • Page 25 www.victorruoshui.co.kr parameter. (The relative value measurement could be conducted by pressing "REL" button.) Caution: 1. Fully discharge the tested capacitor in case it damages the meter. 2. When measuring in-line capacitor, the power should be turned off and all capacitors should be discharged completely. 3.
  • Page 26 www.victorruoshui.co.kr 100μF ±(5.0%+8) 100nF 1000μF ±(5.0%+8) 1μF Overload Protection: 250V DC or AC Peak Value. 2-2-8. Frequency (F) 1. Connect test leads and shielded cable to “COM” 、 “ ” terminals. 2. Rotate function switch to “Hz” gear. Connect test leads and the cable to the signal source or the tested load.
  • Page 27 www.victorruoshui.co.kr frequency or duty cycle measurement mode when in the frequency range. 4. Don't input voltage of over 250V DC or AC peak value in case it damages the meter. Accur Range Resolution 0.001Hz 10Hz 0.01Hz 100Hz 0.1Hz 1kHz ±(0.5%+10) 10kHz 10Hz 100kHz...
  • Page 28 www.victorruoshui.co.kr Protection: 250V DC or AC Peak Value. 2-2-9. Temperature (℃/℉) 1. Rotate function switch to (℃/℉)gear. 2. Insert the cathode (black pin) of cold end (free end) of thermocouple into “COM” jack and anode into “ ” terminal. Then working (temperature measurement end) of thermocouple on the...
  • Page 29 www.victorruoshui.co.kr Accura Range Resolution ＜400℃± (-20 ～ (1.0%+5d) 1℃ 1000)℃ ≥400℃± (1.5%+15d) ＜750℉± ～ （0.75%+5d） 1℉ 1832）℉ ≥750℉± （1.5%+15d） Sensor: Type Thermocouple (Nickel-chromium--nickel silicon) (banana plug). CAUTION: DO NOT INPUT VOLTAGE AT THIS RANGE! VII. Instrument Maintenance This is a precision instrument and the user shall not modify the electric circuit at will.
  • Page 30 www.victorruoshui.co.kr 1. Keep the instrument away from water, dust and shock. 2. Do not store and operate the meter under the condition of high temperature, high humidity, combustible, explosive and strong magnetic place. 3. Wipe the case with a damp cloth and detergent;...
  • Page 31 www.victorruoshui.co.kr the battery door; 5-2. Remove the 1.5V batteries and replace them with two new ones. Although a 1.5V battery of any standard can be used, but in order to lengthen the operation life, alkaline batteries should be used. 5-3. Mount the battery door and tighten the screw;...
  • Page 32 www.victorruoshui.co.kr measuring point and switch off the meter. VIII. Fault Elimination If the instrument could not work properly, please try the following tips to solve some general problems. If the problems still exist, please contact the maintenance center or the distributor. Fault Solution ●...
  • Page 33 www.victorruoshui.co.kr any errors and missing parts, please contact the manufacturer. The Company shall not be held liable for any accidents and hazards resulted from the mal-operations by the user. function elaborated this Instruction shall not be taken as the reasons for using the product for special purposes.