VA316 Manual
Contents
1. RESISTANCE imV 0 8 of rdg 5 digits a am f e 600V igi 7 1 0 of rdg 5 digits 1 0 of rdg 5 digits Input Impedance 10MQ Overload Protection 1000V DC or 700V AC RMS 9 3 AC VOLTAGE Overload Protection 250V dc or rms ac for all ranges 9 7 FREQUENCY 1 2 of rdg 5 digits 40Hz 1Hz 400V 600V er 7 O 1 of rdg 1digib 700V ei as Input Impedance 10MQ Frequency range 40Hz to 400Hz Measurement range 1V to 10V rms 40Hz to 100kHz Overload Protection 1000V DC or 700V AC RMS 9 4 en CURRENT 9 8 FREQUENCY MEASUREMENT FOR CLAMP test leads from any live source and remove the test leads i i 0 a 0 1 of rdg 1digit from the input terminals nT go eE Fem TM Pa 2 Remove screws on the battery cover and open the i cover 3 Remove the exhausted battery and replace with three If continuity exists about less than 400 built in new 1 5V size AAA batteries buzzer will sound gt Show the approx Forward voltage of the diode 4 Place battery cover and secure by a screw 10 AUTO POWER OFF To extend the battery life Auto Power Off function is A CAUTION provided If no key operations of range changing happen Using this appliance in an environment with a about 30 minutes the meter will be turned off strong radiated radio frequency electromagnetic automatically To turn it on pushing the FUNC Button only field approximately 3V m may influence its measuring accuracy 11 REPLACIN2. used to select functions HOLD button When this button is pushed the display will keep the last reading and fl symbol will appear on the LCD Pushing it again returns the meter to normal mode MAX MIN button Press the button to enter the MAX MIN Recording Hold mode The maximum minimum values are then reset to the present input The readings are stored in memory MAX or MIN annunciator turns on to indicate what value is being displayed Hold this button for more than 3 seconds to return to the normal operating mode LCD display aang z O L oui A e ee 0 10 20 30 40 VOHz jack This is positive input terminal for volt resistance frequency diode and Continuity test Connection is made to it using the red test lead COM jack This is negative ground input terminal for all measurements except current Connection is made to it using the black test lead ZERO button Push the button to get relative measure ment mode REL annunciate display on LCD But store the displayed reading as a reference value In the Relative mode the value shown on the LCD is always the difference between the stored reference value and the present reading If the new reading is the same as the reference value the display will be zero FUNC button In QP range press this button to select Q or or PH function Different symbol of function will appear on the LCD amp button Press the
3. 2 function e Never touch exposed wiring connections or any live circuit when attempting to take measurements e Before opening the case always disconnect test leads from all energized circuits e Never use the meter unless the back cover is in place and fastened completely e Do not use abrasives or solvents on the meter To clean it using a damp cloth and mild detergent only e Qualified and trained service technicians should only perform calibration and repair of the meter 4 MAINTENANCE 1 Never touch exposed wiring connections or any live circuit when attempting to take measurements 2 Before opening the case always disconnect test leads from all energized circuits 3 Never use the meter unless the back cover is in place and fastened completely 4 Do not use abrasives or solvents on the meter To clean it using a damp cloth and mild detergent only 5 Qualified and trained service technicians should only perform calibration and repair of the meter 5 GENERAL DESCRIPTION The meter is an autorange professional clamp meter with 3999 counts For measuring DC and AC voltage DC and AC current Resistance Frequency Frequency for the clamp Diode and Continuity Test with battery operated ee There is the AC measurement to be RMS or TRUE RMS about the meter It is chosen as user buy 6 PANEL DESCRIPTION Transformer jaws Pick up DC or AC current flowing through the conductor Rotary switch Rotary switch is
4. AC DC CLAMP METER USER S MANUAL CONTENTS PAGE 1 SAFETY INFORMATION vravvnnnr nn vvnnnnn annan nnnnr 1 2 SYMBOL EXPLANATION nonsese 1 3 SAFETY PRECAUTIONS 2 4 MAINTENANCE 0 coe eee eee eee 3 5 GENERAL DESCRIPTION ee 3 6 PANEL DESCRIPTION ee 4 7 FORWARD LAYOUT 00 6 8 OPERATING INSTRUCTIONS 7 9 SPECIFICATIONS 0 0 0c eee eee 10 10 AUTO POWER OFF 0 cece 13 11 REPLACING THE BATTERY 13 12 ACCESSORIES Ea AT ENER 14 1 SAFETY INFORMATION The digital clamp meter has been designed according to IEC1010 1 and IEC1010 2 032 concerning safety requirements for electrical measuring instruments and hand held current clamps with double insulation overvoltage category 1000V CAT II 600V CAT III and pollution 2 This meter complies with the requirements of the following European Community Directives 89 336 EEG Electromagnetic Compatibility and 73 23 EEC Low Voltage as amended by 93 68 EEC CE Marking However electrical noise or intense electromag netic fields in the vicinity of the equipment may disturb the measurement circuit Measuring instruments will also respond to unwanted signals that may be present within the measurement circuit Users should exercise care and take appropriate precautions to avoid misleading 2 SYMBOL EXPLANATION A Important safety information refer to the operat
5. G THE BATTERY WARNING 12 ACCE RIE To avoid electrical shock or personal injury COESSORIES e Operator s instruction manual e Set of test leads e Gift box e Battery 1 5Vx3 Size AAA remove the test leads and any input signals before replacing the battery Replace only with same type of battery When the electrical tester displays the EA mark or the backlight be not very lit the battery must be replaced to maintain proper operation Use the following procedure WLS120 to replacing the battery 1 Th Rotary Switch is used to select OFF Disconnect 14
6. button is used to turn the backlight on After about 8 seconds the backlight is auto off To turn the backlight on again just press it once more When measuring current press the button the radius lamp near the clamp is lighted at one time Rigger Press the lever to open the transformer When the lever is releaged the jaws will close again 7 FORWARD LAYOUT 9 jens 8 OE NERE x gt A COM A Vator 7 O MAX 600V gt 8 OPERATING INSTRUCTIONS 8 1 DC VOLTAGE MEASUREMENT 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set rotary switch at desired V position Connect the test lead tips in parallel with the circuit to be measured Be careful not to touch any electrical conductors 3 The polarity of the red lead connection will be indicated along with the voltage value 4 Read the measure result from the display 8 2 AC VOLTAGE MEASUREMENT 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set rotary switch at desired V position Connect the test lead tips in parallel with the circuit to be measured Be careful not to touch any electrical conductors 3 Read the measure result from the display 8 3 DC CURRENT MEASUREMENT 1 Set the rotary switch at A position 2 Press ZERO button to enter the zero mode 3 Press the
7. dication OL will be display 8 2 When checking in circuit resistance be sure the circuit under test has all power removed and that all capacitors have been discharged fully 8 6 CONTINUITY TESTING 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set rotary switch at desired Q Ptposition 3 Push FUNC button to select 4 Connect the test lead tips in parallel with the resistance in the circuit being measured If continuity exists i e resistance less than 400 built in buzzer will sound 8 7 DIODE TESTING 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set rotary switch at desired QPF position 3 Push FUNC button to select Pt The red lead should be connected to the anode and the black lead to the cathode of the diode 4 The typical voltage drop should be about 0 6V for silicon diode or 0 3V for germanium diode If the diode is reverse biased or there is an open circuit the reading displayed will be OL 8 8 FREQUENCY MEASUREMENT 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set the rotary switch to Hz position 3 Connect the test leads across the source or load under measurement The polarity of the red lead connection is positive 4 Read the measure result from the display NOTE 1 The signal amplitude must also be greater than the sensitivity le
8. ing manual Dangerous voltage may be present Earth ground El Double insulation Protection class 1000V CAT II 600V CAT III 1 3 SAFETY PRECAUTIONS Follow all safety and operating instructions to ensure maximum personal safety during the operation and to ensure the meter is used safely and is kept in good operating condition e Read the operating instructions thoroughly and completely before operating your meter e Pay attention to WARNINGS which will inform you of potentially dangerous proce dures The instructions in these warnings must be followed e Always inspect your meter and test leads for any sign of damage or abnormality before every use If any abnormal conditions exist i e broken test leads cracked cases display not reading etc do not attempt to take any measurements e Do not expose the instrument to direct sunlight extreme temperature or moisture e Never ground yourself when taking electrical measurements Keep your body isolated from ground by using dry clothing rubber shoes rubber mat or any approved insulating material e You always are careful when working with voltages above 60V dc or 30V ac rms Keep fingers behind the probe barriers while measuring e To avoid damages to the instrument do not exceed the maximum limits of the input values shown in the technical specification tables e Never use the meter to measure voltages that might exceed the maximum allowable input value of any
9. trigger to open transformer jaw and to clamp one conductor only making sure that the jaw is firmly closed around the conductor 4 Read the measure result from the display NOTE 1 Make certain that all test leads are disconnected from the meter terminals 2 Open and close the clamp jaw several times to a7 2 demagnetize the clamp jaw before taking any DC current measurement 3 To avoid using the backlight when read the measure result from the display 8 4 AC CURRENT MEASUREMENT 1 Set the rotary switch at desired A position 2 Press ZERO button to enter the zero mode 3 Press the trigger to open transformer jaw and to clamp one conductor only making sure that the jaw is firmly closed around the conductor 4 Read the measure result from the display NOTE 1 Make certain that all test leads are disconnected from the meter terminals 2 Open and close the clamp jaw several times to demagnetize the clamp jaw before taking any DC current measurement 8 5 RESISTANCE MEASUREMENT 1 Insert the black and red test leads into the COM and VQHz input terminals respectively 2 Set rotary switch at desired 0 PHposition 3 Push FUNC button to select Q 4 Connect the test lead tips in parallel with the resistance in the circuit being measured 5 Read the measure result from the display NOTE 1 If the resistance being measured exceeds the maximum value of the range or the input is not connected an overrange in
10. vel 2 Determine that the amplitude level of the signal to be measured is not greater than the input voltage limit 250V DC AC rms 8 9 MEASURING FREQUENCY FOR CLAMP 1 Set the rotary switch to 4 position 2 Press the trigger to open transformer jaw and to clamp one conductor only making sure that the jaw is firmly closed around the conductor 3 Read the measure result of frequency of AC current flowing through the transformer jaw from the display NOTE Frequency range 40Hz to 400Hz gt 20A 9 SPECIFICATIONS Accuracy of reading tnumber of least significant digits at 18 C to 28 C with relative humidity up to 75 All specifications assume less than 1 year since calibration Temperature coefficient 0 1xspecified accuracy C 9 1 GENERAL Maximum voltage 1000V CAT II 600V CAT III Altitude 2000m Display LCD 3999 counts Updates 2 3 sec Ranging method Auto range mode EN Polarity indication display for negative polarity Overrange indication LCD will display OL 3 09 B ES wi po sel AA tl Low battery will appears on LCD Jaw capability 40mm Max conductor size P a Overload Protection 120 ranges for 60 seconds max ower Battery1 5Vx3 Size AAA 9 5 AC CURRENT oo a pa k Operating 5 C to 35 C 2 5 of rdg 5 digits Storage temperature 10 C to 50 C Frequency range 50Hz to 60Hz 9 2 DC VOLTAGE Overload Protection 120 ranges for 60 seconds max 9 6
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