Analog multimeter safety procedure voltage electrical network. Enable browser cookies for improved site capabilities and performance. Using a multimetermultitester preliminary setup and. Pay close attention to warnings stamped on the front and rear of the meters case. Preparing for absence of voltage testing any directcontact meter can be dangerous if connected to a circuit higher than it is rated for. Safety precautions warnings do not operate this multimeter before reading this manual in its entirety. The beta radiation barely penetrates the outer protective dead layer of the skin of the body.
The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible. Todays power systems can deliver a deadly blow to anyone who fails to take the right safety precautions. Digital multimeter safety precautions grainger industrial. These warnings, as well as all warnings and precautions used through out this manual, must be followed to avoid electric shock andor personal injury. Look for proof of independent testing by an organization. If the meter is wet, ensure that the meter is dried only by trained personnel. Using an electrical meter safely and efficiently is perhaps the most valuable skill an electronics technician or electrician can master, both for the sake of their own personal safety and for proficiency at their trade. Safety precautions the following safety precautions should be observed before using this product and any associated instrumentation. Electrical safety precautions and basic equipment protocol.
You need to understand the quantity you want to measure and avoid putting the test lead into a wrong socket. Deenergize and discharge the circuit completely before connecting or disconnecting a multimeter. Replacment of the fuse, if necessary, is better done by your clarke service department using one of those listed on page 6. The proper care of test equipment and instruments is of utmost importance, whether they are analog or digital. Momentary highvoltage transients or spikes can travel through a multimeter at any time and. Safety tips to measuring voltage with a multimeter. For your own safety, you must choose a handheld multimeter that is designed and tested to protect you against electrical hazards you might encounter. A multimeter is an instrument used to check for ac or dc voltages, resistance and continuity of electrical components, and small amounts of current in circuits. Use standard safety precautions to avoid personal contact with these voltages. The replacement should be of the same specification. Seven function digital multimeter harbor freight tools. When the multimeter is not in use, it should have the leads disconnected and be switched to the highest voltage scale and ac.
Establish the safety precautions and procedures for implementation. The battery for this multimeter is a pp3 9volt as stated on page 4. Check the manufacturers manual for special cautions. Analog multimeter safety procedure free download as word doc. Digital multimeter working principle analyse a meter. If the dmm test leads are damaged then never use the meter. This instruction manual explains how to use your new digital multimeter pm300 safely. State the reason the ac and dc scales of a multimeter differ, the reason for having a mirror on the scale of a multimeter, and the proper way of reading a multimeter using the mirror. Check out our article to learn multimeter safety precautions. When using digital multimeters, we should be careful and observe few safety precautions in order to keep ourselves safe. Safety precautions warnings safety precautions warnings do not operate this multimeter before reading this manual in its entirety.
Basic safety precautions use appropriate ppe such as eye protection, flameresistant clothing, long sleeve shirts, dielectric and oilresistant safety boots, rubber gloves with leather protectors, mats, blankets, and shields. When choosing a meter for a task, analyze the worstcase scenario of your job and determine what category your use or application fits into. Although additional safety requirements are also included in most safety standards, these four hazards are the foundation upon which all safety standards are based. Always start with the highest range of a voltmeter. This instrument will let you check to see if there is. The length of time an instrument retains its original usefulness and accuracy depends largely on the care it receives in the hands of the user. To avoid any contingent danger, use this product only as specified. In these cases, youre dependent for protection on the safety margin already built into your meter. Employees in this class are under general direction of the department manager. Keysight u1241b and u1242b handheld digital multimeters. Using an electrical meter safely and efficiently is perhaps the most valuable skill an electronics technician can master. Safety precautions when using a multimeter tool nerds.
Safety precautions warnings 2 safety precautions warnings do not operate this multimeter before reading this manual in its entirety. Abcs of multimeter safety multimeter safety and you. How to verify electrical test tool operation with a proving unit. The following safety precautions are the minimum for 1. The safety precautions procedural section covers the major guidelines and precautions intended to achieve a safe lab and operating environment for people performing experiments.
Always ensures that the test leads and dial are in right position for the desired measurement. The multimeter should only be used by personnel qualified to recognize shock hazards and trained in the safety precautions required to avoid possible injury. Sample safe work procedures templates the safe work procedures templates presented herein are a sample guide to the subject. Multimeter safety precautions as with other meters, the incorrect use of a multimeter could cause. Observe the general safety precautions for electrical and electronic. Each application with a digital multimeter presents potential safety hazards that must be considered when taking electrical measurements. The warnings and precautions should be read and well understood before the instrument is used.
Carbon14 14 c safety information and specific handling. Take digital multimeter safety precautions to handle the conditions found in your work environment. The following general safety precautions must be observed during all phases of. Pay close attention to warningsstamped on the front and rear of the meters case. Here we are going to explain you some safety information of dmm. Keysight 3458a users guide 5 safety considerations read the information below before using this instrument. Before use, verify the meter s operation by measuring a known voltage.
Therefore, this manual may not contain the latest information. This guide is only concerned with electrical safety testing methods. The following safety precautions should be observed before using this product and any associated instrumentation. This is also necessary for safety of the instrument. Jul 25, 2019 extreme safety precautions must be followed when taking electrical measurements. When you follow the above safety precautions, you can be sure to avoid the dangers that come with using the digital multimeter device. With some of the systems, the current or voltage is so sporadic that the autorange cant keep up sensibly. So if someone gives you a multimeter with autorange, put it to use. Never use the meter until the rear cover is screwed on after replacing a battery or fuse. In case you dont know how to do it, refer to the user manual.
Before any operations, please read the following safety precautions to avoid any possible bodily injury and prevent to this product or any other products damage connected. Model 2700 multimeterswitch system users manual 2001, keithley instruments, inc. Equipment connected to source circuits in which measures. Page 5 as described in the international electrotechnical com mission iec standard iec 664, digital multimeter mea suring circuits e. Multimeter safety precautions as with other meters, the incorrect use of a multimeter could cause injury or damage. Multimeter safety and you protection against two major electrical hazards transientsthe hidden danger lets take a look at a worstcase scenario in which a technician is performing measurements on a live threephase motor control circuit, using a meter without the necessary safety precautions. State how a multimeter differs from other meters, the reason a multimeter is preferred over separate meters, and the way in which a multimeter is changed from a voltage measuring device to a current measuring device. Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Before using any electrical test equipment, people should always first refer to the users manual for proper operating procedures, safety precautions, and limits. Do not place your multimeter in a place where you may accidentally knock it over or pull it to the floor. Complete the circle of safety by choosing the right tool. In my travels around the country, several facilities have had fatalities due to an electrical worker troubleshooting a 2. Before and after hazardous voltage measurements, test the voltage function on a known source such as line voltage to determine proper meter functioning.
After reading it, keep it together with the product for reference to it when necessary. Digital multimeter ps8a12 34 5 6 78 9 10 1112 1 safety precautions this instruction manual explains how to use your new digital multimeter ps8a safely, before use, please read this manual thoroughly. Office manager directs none job definition the person in this position is under the direct supervision of the office manager of lexington electric system. Industrial electricity linnbenton community college. Jan 31, 2020 when you follow the above safety precautions, you can be sure to avoid the dangers that come with using the digital multimeter device. How to use a digital multimeter what is a multimeter. Before operating multimeters, we have to follow some safety precautions. It can be daunting at first to use a meter, knowing that you are connecting it to live circuits. Do not work alone when making measurements of circuits where a shock hazard might exist.
Max every 15 min fused 2000 200 off600 20v 2000 200 mv mv. Failure to follow the warnings and instructions may result in electric shock, fire andor serious injury. Keysight u1231a, u1232a, and u1233a handheld digital. View and download innova 3320 owners manual online. The zero ohms control is a potentiometer for adjusting the 0 reading on ohmmeter functions. Using an electrical meter safely and efficiently is perhaps the most valuable skill an electronics technician can master, both for the sake of their own personal safety and for proficiency at their trade. Safety precautions models and parameters box contents front panel rear panel dm6100dm6300 digital meter introduction digital meter physical description read and follow all the safety precautions and instructions before installing and working with this equipment. Safety precautions warnings this digital multimeter is intended for indoor use only. Eb 15025 page 1 of 10 geotechnical engineering manual. Before using a digital multimeter, be sure to read and fully understand the instructions and warnings outlined in. Safe meter usage chapter 3 electrical safety pdf version. In addition to the multimeter and dc power supply, this class will make use of the oscilloscope and. The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Voltmeter safety precautions just as with ammeters, voltmeters require safety precautions to prevent injury to personnel and damage to the voltmeter or equipment.
If the multimeter is set to the 20v dc range, then the highest voltage the multimeter can measure is 20v in that range. Not all multimeters have this protection, but most have some sort of protection, such as a fuse. Model 2001 multimeter operators manual mhz electronics. International symbols used on the meter and in this manual are explained in chapter 1. It can be daunting at first to use a meter, knowing that you are connecting it to. Never apply power to the circuit while measuring resistance with a multimeter. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety. The voltage rating alone will not tell you how well that meter was designed to survive high transient impulses. The following guidelines must be followed to avoid accidents that can result in electric shock or personal injury. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. Multitester vomvoltohmeter also called multimeter is designed to measure different magnitudes of electrical. This instruction manual explains how to use your new digital multimeter pc5000a safely.
In addition to a general inspection, carefully check the following. The digital meter ships in two different configurations. Operating instructions 10030s digital multimeter multimetro digital 10030s s a f ety r a t e d cat ii 600v ul610101 s af ety r t e d cat iii 300v ul610101 a ma 20 200 10a 1. Health and safety march 2011, revised 2014, 2016 2.
How to troubleshoot a pump control panel with a thermal multimeter. How to validate a pump control panel repair with a thermal multimeter. The following is a list of the minimum safety precautions for using a voltmeter. The safety related precautions such as safety guide and maintenance and safety precautions conform to the legal and industry standards that were applicable at the time this operating manual was created. How to measure voltage with a multimeter measuring voltage with a multimeter, digital dmm or analogue is easy, but with a few precautions and tips it can be more accurate, easier and safer. General information these instructions accompanying the product are the original instructions. These voltage levels pose a potential shock hazard to the user. The following safety precautions are the minimum for using a multimeter. Write the products serial number in the back of the manual near the assembly diagram or month and. Digital multimeter 1 safety precautions before use, read the following safety precautions. In addition to using a multimeter rated for the appropriate measurement category, anyone working on live power circuits should be protected with flame resistant clothing, should wear safety glasses or, better yet, a safety face shield, and should use insulated gloves. Radiation safety officer and his designated alternate.
Carbon14 14 c safety information and specific handling precautions general. Safety guidelines to ensure that you use this device safely, follow the safety guidelines listed below. The reset is a circuit breaker and is used to protect the meter movement. Important safety information in this manual, on the labeling, and all other. A lightning strike causes a transient on the power line, which in turn strikes an arc between the input terminals inside the meter. Before use, please read this manual thoroughly, and. In both of these precautions, you do not want to jar the needle from it jeweled pivot. When measuring incircuit components, first deenergize the circuits before. Safe meter usage electrical safety electronics textbook. Carbon14 is a low energy beta emitter and even large amounts of this isotope pose little external dose hazard to persons exposed. This article provides important tips on safety precautions digital multimeters. Beginners are not aware of these safety precautions and it is important that any person who intends to use the digital multimeter to follow them to avoid harm or havoc in the long run.
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