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Transcript
Professional Analogue Multi-meter With Superior Impedance 10MΩ at All AC/DCV Ranges TAUT-BAND MOVEMENT BUILT-IN Auto Power-Off (Sleep Mode) 1,000V Fuses 0.5A & 10A Equipped True RMS Measurment at ACV/ACA Operator’s Instruction Manual READ AND UNDERSTAND THIS MANUAL BEFORE USING THE INSTRUMENT Failure to understand and comply with the WARING and operating Instructions can result in serious or fatal injuries and /or property damage. Thank you for purchasing this Professional Analogue Multi-meter ! I. INTRODUCTION Intended Use - Measuring and displaying electric quantities in the range of overvoltage category CAT II up to max. 1,000V, CAT III up to max. 500V to ground potential, in accordance with EN - Measuring alternating and direct currents of up to Max. 1,000 V - Measuring alternating and direct currents of up to 10 A Max. - Measuring frequencies of up to 25 kHz - Measuring resistances of up to 2,000 MΩ - Acoustic continuity checks - Diode tests - Transistor tests The product may only be operated with batteries. The measuring instrument must not be operated when it is open, i.e. with an open battery compartment or when the battery compartment lid is missing. Measuring in damp rooms or under unfavourable ambient conditions is not admissible. Adverse ambient conditions include: -Excessive dampness or humidity -Dust or combustible gases, vapours or solvents -Storms or stormy conditions, strong electrostatic fields, etc. Any use other than that described above will damage the product and involves other risks, such as short-circuit, fire, or electric shock. Do not change or modify any part of the product! The safety instructions must be observed! Safety instructions: failure to comply with these operating instructions! We assume no liability for any consequential damage! We do not assume liability for personal injury or material damage resulting from improper use or disregarding the safety instructions! In such cases the warranty/guarantee is voided. The user must comply with the safety instructions and warnings contained in these instructions. The following symbols must be observed: An exclamation mark in a triangle indicates important information in these operating instructions that has to be observed. The triangle containing a lightning symbol warns of danger of an electric shock or of the impairment of the electrical safety of the device. ※ It indicates special information and advice on operating This device is CE certified and meets the necessary European regulations. Protection class II (double or reinforced insulation) CAT II Overvoltage category II for measurements on electric and electronic devices connected to mains power supply. This category also covers all smaller categories (e.g. CAT I for mea-suring signal and control voltages). CAT III Overvoltage category III for measuring building wiring installation (e.g. outlets or sub-distributions). This category also covers all smaller categories (e.g. CAT II for measuring electronic devices). Earth potential For safety and licensing reasons (CE), unauthorized conversion and/or modification of the device is not permitted. Consult an expert when in doubt as to the operation, the safety or the connection of the device. Measuring instruments and accessories are no toys and do not belong in the hands of children! The accident prevention regulations of the relevant trade associations for electrical systems and operating materials are to be observed in commercial institutions. In schools, training centers, hobby and self-help workshops, the operation of measuring instruments must be supervised by trained personnel. Before measuring voltages, always make sure that the measuring instrument is not set to current range. The voltage between any socket of the measuring instrument and the ground may not be higher than 1,000V in excess voltage category II, and than 500 V DC/AC in excess voltage category III. Take particular care when dealing with voltages exceeding 25 V AC or 35 V DC! If electrical conductors are touched, even these voltages involve the risk of a fatal electric shock. Prior to each measurement, check your instrument including its measuring lines for damage. Never carry out measurements when the protective insulation is damaged (ripped, torn off etc.). In order to avoid an electric shock, ensure that you do not touch the connections to be measured, even indirectly, during measurements. When measuring, only touch within the tangible grip markings on the test prods. Do not use the multimeter shortly before, during or just after a thunderstorm (lightning high-energy over voltages!). Ensure that your hands, shoes, clothing, the floor, the measuring instrument, the measuring lines, switches and switching parts, etc. are dry. Do not operate the measuring instrument in surroundings or unfavourable conditions where combustible gases, vapours or dust are or may be present. Avoid operation in the immediate vicinity of: -strong magnetic or electromagnetic fields -transmitting aerials or HF generators. This might lead to distorted measuring results. For safety reasons, only use measuring lines or accessories in correspondence with the specifications of the multimeter. Only measuring equipment with double or reinforced insulation may be used (e.g. fully insulated BNC adapters, etc.) If you have reason to believe that the device can no longer be operated safely, disconnect it immediately and make sure it is not unintentionally operated. It can be assumed that safe operation is no longer possible if: - the device shows visible damage, - the device does not function any longer or - after it has been stored under unfavourable conditions over a period of time or - after it has been exposed to heavy stress during transport. Do not switch on the measuring instrument immediately after it has been taken from a cold to a warm environment. The condensation generated could cause serious damage to the device. Allow the device to reach room temperature before switching it on. Do not leave packaging material lying around carelessly. It may become a dangerous toy for children. You should also observe the safety instructions in the individual chapters. PRODUCT DESCRIPTION The analogue multimeter (referred to as “multimeter” hereafter) is equipped with a shock-absorbing pointer instrument. The scale is equipped with a mirror which allows accurate readings. The meter movement is supported by taut bands to ensure lossless measuring. The multimeter can be used in any operating position. The back support bracket not only causes a slightly slanted position, but also hook-up the tester which make it easier to place the tester read the display when measuring. The compact holster alongside protects the measuring device from blows. Hook-up Slant The mA current range is protected against overload with a ceramic quick-break fuse. And though the 10 A range is protected by a ceramic quick-break fuse too, it still must not be tested for a period beyond 30 seconds one time; and pauses at least 15 minutes before starting next measurement at big current load. The individual measuring functions and ranges are selected via a rotary switch. The multimeter can be used for hobby or professional applications. The following batteries are used as voltage supply: 1 x 9V block + 2 x mignon (type AA) On delivery, the measuring lines might be covered with protective sleeves. Prior to use, pull the sleeves off the safety plugs and the test prods. After use, put them back on for transport protection. The scale display can be calibrated via the calibration screw. Perform this prior to each testing operation to prevent faulty test. Scope of delivery Multimeter with removable compact rubber holster alongside Safety measuring test leads, red and black 1x 9V (PP3) battery 2x AA batteries Operating instructions Signs and symbol Overload, measuring range exceeded Symbol for the acoustic continuity checker OFF Switch position OFF COM/N/ Reference potential, - for DC / N for AC +/P Measured potential, + for DC / P (phase) for AC AC Alternating quantity for voltage DC mV Constant quantity for voltage and current Real root mean square of AC measurement available both for the sine wave and non-sine distorted waveform Millivolt (exp.-3) V Volt (unit of electric potential) A Ampere (unit of electric current) mA Milliampere (exp.-3) µA Microampere (exp.-6) TrueRMS kHz Kilohertz (unit of electric frequency, exp.3) Ω Ohm (unit of electric resistance) kΩ Kiloohm (exp.3) MΩ Megaohm (exp.6) LI Operating current of diodes LV Conducting state voltage of diodes hFE Amplification factor of transistors Iceo IC IB Collector emitter leakage current of transistors Collector current Base current SPECIFICATIONS Guaranteed for one-year warranty. Over-voltage category: CAT II 1,000V, CAT III 500V to ground potential. Standard Environment: 23C3C, less than 75% RH. Temperature Ranges: 0C to 40C, 32 F to 104 F for Operating condition. -10 C to 50C, 14 F to 122F for Storage condition. Humidity Scope: Operating condition less than 90% RH. Storage condition: less than 80% RH. Operating altitude: Max. 2,000 m Size: 158(W)x 103(D)x 38(H) MM including Holster Weight: 490g approx. (including batteries & Holster) Accessories: One set of 1000V/10A class Test Leads; Safety ceramic-tube Fuse 0.5A/1000V 1pc on PCBA; Safety ceramic-tube Fuse 10A/1,000V 1pc on PCBA RANGE SPECIFICATIONS & TOLERANCE LIST: Test Function s Range Accuracy Remarks DC V 0-0.05-0.5-2.5-10-50-250V -1000V AC V (True RMS value) 0-0.05-0.5-2.5-10-50-250V, -1000V DC A 0-0.01-0.05-0.25-2.5-25mA -250mA-10A AC A (True RMS value) 0-0.01-0.05-0.25-2.5-25mA -250mA -10A Ω X 1: 0.2 ~ 2KΩ Midscale at 20Ω X 10: 2 ~ 20KΩ Midscale at 200Ω X 100: 20 ~ 200KΩ Midscale at 2000Ω X1K: 200~ 2MΩ Midscale at 20KΩ X10K: 2K ~ 20MΩ Midscale at 200KΩ X100K: 20K~200M ohm, Midscale at 2000K ohm X1M: 200K~2000M ohm, Midscale at 20M ohm 0.25-2.5K-25K Hz 4% FSD. at 0.05V range 3% FSD. at other ranges 4% of FSD. Band width: 40 ~ 400 Hz NOTE #1 3% of FSD. 4% of FSD. For 10A range NOTE #2 4% of FSD. Band width: 40 ~ 1,000 Hz NOTE #1 & #2 3% of ARC (Scale Length) Input Impendence: 10MΩ Overload Protection: Max. 1000V AC/DC BUT Range 0.05V/0.5V: Max. 250V Input Impendence: 10MΩ Overload Protection: Max. 1000Vrms AC/DC. BUT Range 0.05V: Max. 250V Drop Voltage: 50 mV Overload protected by two Fuses 0.5A/1000V(for mA ranges) and 10A/1000V. Drop Voltage: 50 mV Overload protected by two Fuses 0.5A/1000V(for mA ranges) and 10A/1000V. Overload protected by the Oxide Varactor & Fuse. The Input Voltage limit: Min.50V, Max. 250Vrms AC/DC. 3 % of FSD. Input Voltage Scope: 2.5V ~ 250V. But Max. 10V at 2.5/25k Hz ranges. At Ω X 10 Range Frequency Transistor Check hFE: 0-1000 Not Specified Diode Check IF, IR, LI, LV Continuity Check Beeper sounding Not Specified Note#3 < 200 Ohm At Ω X 10 Range Overload protected by Oxide Varactor. Input Voltage Limit: Min. 50V, Max.250V AC/DC(5s). POWER Supply Internal Battery: R6P, AA, 1.5V 2pcs, 6F22, NEDA1604, 9V 1pc Note#1: RMS Conversion with Signal Crest Factor of 1 to 3 for ACV/ACA testing in case of non-sine waveform. Additional error 2% shall be counted when the crest factor 3 to 5 max. The Crest Factor is defined as Vp/Vrms. Note#2: For 10A range, the big current loaded max. 1min. with 15 min pause. Note#3: For Diode test, the Max. current is 0.15 µA in the x1M range; the Max. current is 1.5 µA in the x100k range; and Max. 15 µA in the x10k range; and Max. 0.15 mA in the x1k range; and Max. 15 mA in the x10 range; and Max. 150 mA in the x1 range. II. OPERATIONS Prior to working with the measuring device, you have to insert the enclosed batteries. Insert the batteries as described in chapter “Cleaning and Maintenance”. Rotary switch The individual measuring functions can be set via the rotary switch. If the rotary switch is set to “OFF”, the measuring device is switched off. Always turn off the device when it is not in use. Auto power-off function If the rotary switch is not moved for about 5 minutes, the multimeter shuts down automatically. This prevents the batteries from discharging prematurely. During operation the power indicator is lit. If the power indicator goes out although the rotary switch is not in the “OFF” position, auto power-off is active. To restart, switch the measuring selection knob to OFF. Select the desired measuring range and continue measuring. The power indicator lights up and the measuring operation is ready. Measuring Do not exceed the permitted max. input values. Never touch circuits or parts of circuits with a possible voltage of more than 25V/AC rms. or 35 V/DC! Danger to life! Before measuring, check the connected measuring lines for damage such as, for example, cuts, cracks or pinches. Replace defective measuring lines immediately by new ones, defective measuring lines may not be used any longer! Danger to life! Before changing the measuring range, the test prods have to be removed from the test object. ※ Always start measuring with the largest measuring range. Then gradually switch down to achieve an exact measuring result. Results are most accurate in medium scale range (scale range approx. 70 - 110°). The measuring ranges on the rotary switch correspond to the scale end value. For reading, always select the corresponding value (e.g. scale 50 for the measuring ranges 50 and 500). Make sure that the AC/DC mode switch button is UP at the “DC” position while testing (except for ACA/ACV) to avoid faulty measurements. a) Null balance Before measuring, always perform null balancing using the calibration screw (scale value 0V). There must be no measuring signal on the measuring lines. b) Measuring AC and DC voltage Do not exceed the permitted max. input values; this also applies when measuring superimposed DC/AC voltages (e.g. ripple voltages). - Select the measuring range V using the rotary switch. - Make sure to set the AC/DC mode switch button in the proper position. - Connect the black measuring line with the COM socket and the red measuring line with VΩ socket. - Now perform null balancing. - For DCV testing, it’s necessary to observe the correct polarity (red = + / black = -) and connect the two test prods with the test object (battery, circuit, etc.). If the polarity is not correct, no value is displayed. The built-in protective diode prevents the measurement. Stop measuring and measure again observing the right polarity. - Read off the measured value on the “V” scale. - After measuring, put the rotary switch in the “OFF” position to turn off this device. ※ At the ranges 0.05V/0.5V/2.5V, before measuring the needle may be off the Zero position and deflected somehow due to its higher impedance. It’s the normal case and doesn’t affect any measurement and accuracy while testing b) Measuring AC and DC current Do not exceed the permitted max. input values in the individual measuring ranges. Current measurement is only admissible in circuits of up 1000V. Proceed as follows to measure direct currents of up to 10A: - Select the measuring range 10A using the rotary switch. - Make sure to set the AC/DC mode switch button in the proper position. - Connect the black measuring line with the COM socket and the red measuring line with special 10A socket. - Now perform null balancing. - For DC testing, it’s necessary to observe the correct polarity (red = + / black = -) and connect the two test probes in series with the test object (battery, circuit, etc.). If the polarity is not correct, no value is displayed. The built-in protective diode prevents the measurement. Stop measuring and measure again observing the right polarity. - Read off the measured value on the “A” scale. - After measuring, put the rotary switch in the “OFF” position to turn off this device. Proceed as follows to measure direct currents of up to 250mA: - For measuring in the mA/µA range, select the corresponding measuring range by using the rotary switch. - Make sure to set the AC/DC mode switch button in the proper position. - Connect the black measuring line with the COM socket and the red measuring line with mA socket. - Now perform null balancing. - For DC testing, it’s necessary to observe the correct polarity (red = + / black = -) and connect the two test probes in series with the test object (battery, circuit, etc.). If the polarity is not correct, no value is displayed. The built-in protective diode prevents the measurement. Stop measuring and measure again observing the right polarity. - Read off the measured value on the “A” scale. - After measuring, put the rotary switch in the “OFF” position to turn off this device. c) Resistance measurement Make sure that all circuit parts, switches, components and any other test objects are currentless and discharged. Proceed as follows to measure the resistance: - Select the measuring range on the rotary switch Ω. - Connect the black measuring line with the COM socket and the red measuring line with the VΩ socket. - Connect the two test probes with each other and wait until the pointer has stabilized. A value of approx.0 Ohm must be displayed. In case of a deviation, adjust the pointer to 0Ohm using the Zero Ohm calibration adjustor. Always carry out this check when changing the measuring range. - Read off the measured value on the “Ω” scale. Multiply the dis-played value by the measuring range to obtain the measuring result (e.g. 100Ω (display) x10kΩ (measuring range) = 100 x 10,000 = 1MΩ (measuring result)). - After measuring, put the rotary switch in the “OFF” position to turn off the multimeter. e) Acoustic Continuity Check Make sure that all circuit parts, switches, components and any other test objects are currentless and discharged. The continuity check allows a quick check e.g. of a line. If forward resistance is <200 Ohm, a beep sounds with the displayed measuring result. To measure, proceed as follows: - Select the measuring range on the rotary switch. - Connect the black measuring line with the COM socket (6) and the red measuring line with the VΩ socket. - Now perform null balancing. - Now connect the two test probes to the test object (component, switch etc.). - Read off the measured value on the “Ω” scale. A beep sounds when the resistance value is <200 Ohm. - After measuring, put the rotary switch in the “OFF” position to turn off the multimeter. f) Diode Test Make sure that all circuit parts, switches, components and any other test objects are currentless and discharged. A diode test determines forward voltage and operating current of a diode (reverse direction IR, forward direction IF). For this measurement, proceed as follows: - Use the rotary switch to select the measuring function “Ω” and the measuring range according to your diode. Start with the smallest range “x100k/1.5 µA”. Switch to a higher value accordingly (up to max. x1/150 mA). - Connect the black measuring line with the COM socket and the red measuring line with the V/Ω socket. - Now perform null balancing. - Connect the two test prods with each other and wait until the pointer has stabilized. A value of approx. 0 Ohm must be displayed. In case of a deviation, adjust the pointer to 0 Ohm using the 0 Ohm calibration adjustor. - Now connect the two test prods with the test object (diode). Always perform a measurement with reversed polarity well. - Read off the measured voltage (UF/UR) on the “LV” scale, the unit being volt (V). -The operating current (IF/IR) is displayed on the “LI” scale. The unit corresponds to the chosen measuring range (µA/mA). ※ The operating current can be set from 1.5 µA to 150 mA. Caution! Excess current may damage the component! - If there is no display, the diode is measured in reverse direction or the diode is defective (break). - After measuring, put the rotary switch in the “OFF” position to turn off the multimeter. g) Transistor test The transistor test measures the amplification factor of transistors. The amplification factor is the collector current (IC)/base current (IB) ratio. This function requires an auxiliary circuit with a resistor of 24 kilo-ohm (not included in delivery). Connect this resistor between the base and the collector connection of the transistor. Proceed as follows to measure the amplification factor: - Use the rotary switch to select the measuring function Ω and the measuring range “x10 &hFE”. - Connect the black measuring line with the COM socket (10) and the red measuring line with the V/Ω socket. - Now perform null balancing. - Connect the two test probes with each other and wait until the pointer has stabilized. A value of approx. 0 Ohm must be displayed. In case of a deviation, adjust the pointer to 0 Ohm using the 0 Ohm calibration adjustor. - Now connect the two test probes with the test object (transistor), depending on the transistor type. NPN: Black measuring line at collector (C), red measuring line at emitter (E). PNP: Red measuring line at collector (C), black measuring line at emitter (E). - Read off the measuring value for the amplification factor on the “hFE” scale. - If there is no display, the transistor is measured in reverse direction or the transistor is defective (break). - After measuring, put the rotary switch in the “OFF” position to turn off the multimeter. ※ If the base connection of the transistor is open (no resistor used), the leakage current “Iceo” between collector and emitter is displayed. The value can be read off on the “Iceo” scale, the unit being mA. h) Frequency measurement Make sure you do not exceed the permitted max. input value of 10V/AC. The multimeter can measure frequencies from 0 Hz to 25 kHz in the voltage from 2.5 to 10 V/AC. To measure, proceed as follows: - Select the measuring range “Hz” or “kHz” on the rotary switch. - Connect the black measuring line with the COM socket (10) and the red measuring line with the Hz socket. - Now perform null balancing. - Connect the two measuring probes to the test object (generator, switch etc.). - Read off the measured value on the “kHz” scale. The unit corresponds to the set measuring range (Hz or kHz). - After measuring, put the rotary switch in the “OFF” position to turn off the multimeter. III Cleaning and Maintenance General To ensure the accuracy of the multimeter over an extended period of time, it should be calibrated once a year. See the next chapter for information on battery and fuse replacement. Regularly check the technical safety of the instrument and measuring lines, e.g. for damage to the housing or squeezed parts etc. Never operate the measuring device when it is open ! Cleaning Always observe the following safety instructions before cleaning the device: Live components may be exposed if covers are opened or parts are removed (unless these parts are intended to be removed without tools). Before cleaning or repairing the multimeter, any lines have to be disconnected and the device has to be turned off. Do not use agents containing carbon, benzine, alcohol or similar substances to clean the device. The surface of the multimeter will be corroded. In addition, the vapours are detrimental to health and explosive. Sharp-edged tools, screwdrivers or metal brushes should not be used for cleaning purposes. To clean the device, the display or the measuring lines, use a clean, lint-free, antistatic and dry cleaning cloth. Inserting/replacing the batteries Operation of the measuring instrument requires batteries, which are included in delivery. Insert new batteries: - Start initial operation, - When the power indicator does not light up any more; then the 9V(6F22) battery should be replaced. - When null balancing in the resistance measuring range can no longer be performed. Then the AA batteries should be replaced. - When null balancing in DC1,000V measuring range can no longer be performed. Then the 9V(6F22) battery should be replaced. Proceed as follows to insert or change the batteries: - Remove all measuring lines and turn off the multimeter. - Loosen the housing screw on the back and carefully slide upside off the battery compartment lid. - Take off the old battery (better to use a tool like screwdriver for 9V battery), and insert new batteries as displayed. Watch out for the polarity in the battery compartment. 9V (6F22) battery + AA batteries 2pcs. - Now, carefully close the housing again. Never operate the measuring device when it is open. DANGER TO LIFE! Do not leave flat batteries in the device. Even batteries protected against leaking can corrode and thus release chemicals which may be detrimental to your health or destroy the device. Do not leave batteries lying around carelessly. They could be swallowed by children or pets. If swallowed, consult a doctor immediately. If the device is not used over a period of time, remove the batteries in order to prevent leaking. Leaked or damaged batteries can burn your skin if touched. Therefore, use suitable protective gloves. Make sure that batteries are not short-circuited. Do not throw batteries into fire. Batteries must not be recharged. There is danger of explosion. ※ It’s better to use alkaline batteries. They are powerful and long-lasting. Replacing the fuse Always adhere to the safety instructions when replacing fuses! Make sure that only fuses of the type stated and of the rated current specified are used as a replacement. Using unsuitable or repaired fuses or bypassing the fuse holder is inadmissible and can cause fire. Both the measurement input “V/mA” and the measurement input “10A” are protected against overcharge. If measurements can no longer be made via the “V/mA” socket or the input “10A”, the internal fuses must be replaced. Proceed as follows to change the fuse: - Remove all measuring lines and turn off the multi-meter. - Pull off the rubber holster alongside from the ABS housing. - Loosen the housing screw on the back and carefully slide off the battery compartment lid. - Push the plastic peg between the two battery compartments forward until the case is unlocked. Carefully remove the case. - Replace the ceramic microfuse with the new fuses of the same type: F 0.5A/1000V quick-acting 6.3 x 32 mm; and F 10A/1000V quick-acting 6.3 x 32 mm. - Close the device in reverse order and carefully screw the battery compartment lid back on, and then recover the holster well. Disposal of used batteries/rechargeable batteries! The end user is legally obliged (battery regulation) to return all used batteries and rechargeable batteries. Disposal in the household waste is prohibited! Batteries containing toxic substances are marked with the symbols shown that indicate they must not be disposed of in household waste. The heavy metals concerned are: Cd = cadmium, Hg = mercury, Pb = lead. You can return used batteries/rechargeable batteries free of charge at the official collection points of your community, in our stores, or wherever batteries/rechargeable batteries are sold! You will thus carry out your legal obligations and contribute to the protection of our environment! Disposal Old electronic devices are resources and do not belong in the household waste. At the end of its service life, dispose of the product at the collection point of your community according to the relevant statutory regulations. It is prohibited to dispose of the device in the household waste. Troubleshooting By purchasing the multimeter you have acquired a state-of-the-art product which operates reliably. Nevertheless, problems or malfunctions may occur. For this reason, the following is a description of how you can eliminate possible mal functions yourself: Please observe the safety instructions! Error The multimeter does not work. No measurements possible via V/mA socket. No measurements possible via 10A socket No change in measured values. Faulty measuring results are displayed. Possible cause Are the batteries exhausted? Is the power indicator LED lit? Check the state of the batteries and the fuse 0.5A, as well as the LED lighting. Is the fuse defective? Check the fuse 0.5A (fuse replacement) Is the fuse defective? Check the fuse 10A (fuse replacement) Have you selected the right measuring sockets? Is the measuring mode correct (AC/DC)? Has null balancing of the display or a 0 Ohm calibration for the resistance measurement been carried out? Is the “AC/DC” button not properly located ? Any repair work other than that described above must be carried out by an approved specialist. If you have questions concerning the use of the measuring device, our technical support service is available for you by the local retailer.