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Plant Maintenance Products and tips for industrial professionals Volume 1, Number 1 Enter to win this handheld Casio 2.5" color television Details inside PRODUCT FOCUS 200 MHz, Color ScopeMeter® Series I Fluke Digital Multimeters I Infrared Thermometers I Accessories and more... PlantFLUKE News Products and tips for industrial professionals Fluke digital multimeters – Rugged. Reliable. Accurate. Volume 1, Number 1 Feature 2 Monitoring load current with a DMM Monitoring 4 Proper use of clamp meters in commercial settings load current 6 Troubleshooting with a process loops DMM 8 Infrared technology makes safe measurements 10 Is that a tingle she feels? digital multimeter think “amps” when (DMM) has become reading the display. a necessity for The current clamp electrical system is designed to clamp Ameasurements, and most electri- around a single con- cians and electronic technicians ductor and uses the would feel lost without one. fluctuating magnetic The features available in today’s field around the meters make them versatile conductor to induce Products enough to find most problems in a current. Because it electrical and electronic circuits. uses transformer 2 Fluke digital There are, however, some action, the current multimeters measurement tasks that make transformer is only a technician think twice about usable on ac circuits. 4 Electrical tools for his DMM. However, there are other clamps, your nearest Fluke distributor. industrial electricians Take for instance, load currents. like the Fluke i410, designed to These same distributors stock a Many DMMs are designed to use the “Hall Effect” sensor which collection of Fluke DMMs with 6 Tools for process safely measure current up to 2, allows them to be used on both ac varying feature sets so you can professionals 10 or 20 amps depending on the and dc circuits. purchase the exact features you 8 Industrial DMM. Yet load currents found in As long as the DMM is safety need in your work. I most industrial environments are rated for the environment in thermometers much higher and backed by high which you will be making the For the entire article, 10 Fluke accessories energy. On the surface it’s not an measurement, say CAT III for visit our web site at attractive match. electrical panels and switch www.fluke.com/plant That’s where a DMM accessory gear, you can safely attach an called a current clamp comes in appropriately rated current clamp Fluke. Keeping your world handy. A current clamp, like the to your DMM and make the mea- up and running. Fluke 80i-400, can be employed surement. Just remember that to overcome the DMM’s limitations when you are using a DMM/ Fluke Corporation for measuring ac current. Like a current clamp combination you PO Box 9090, Everett, WA USA 98206 power transformer, the current need to combine the measure- Fluke Europe B.V. clamp uses windings around a ment specifications of the current PO Box 1186, 5602 BD Eindhoven, The Netherlands laminated core to step-down the transformer and the DMM to get circuit current within the mea- overall measurement accuracy. For more information call: In the U.S.A. (800) 443-5853 or surement range of the DMM. The Combining a DMM with a Fax (425) 446-5116 step down ratio is commonly current clamp accessory enables In Europe/M-East/Africa +1 (31 40) 2 675 200 1,000 to 1. So, measuring 100 accurate measurement and or Fax +1 (31 40) 2 675 222 amps in a load circuit through a analysis of load currents. In Canada (800) 36-FLUKE or Fax (905) 890-6866 current clamp will apply 100 mA Fluke has a wide range of From other countries +1 (425) 446-5500 or to the DMM’s current input. That’s current measurement accessories Fax +1 (425) 446-5116 well within the DMM’s capability to fit just about any application. Web access: http://www.fluke.com/ and, conveniently, a direct reading Current clamps with a maximum ©2002 Fluke Corporation. Specifications subject from the DMM display. Just switch current rating ranging from 200 to change without notice. All rights reserved. Printed in U.S.A. 5/2002 1883245 C-ENG-N Rev A the DMM to mA ac mode and to 2,000 amps are available at 2 Fluke 189 Fluke 179 Logging Multimeter Digital Multimeter Smart meters for the most Tough meters for industrial demanding users professionals The Fluke 180 Series DMMs deliver break- Designed tough to withstand the harshest through features and functions with the accu- work environments, and are accurate enough Find more racy to meet the demands of any application. to rival most bench meters. articles on • 50,000-count resolution with instant read- • 6000 count display provides better ings for detailed analyses (0.001 mV, resolution the Fluke 0.01 mA, 0.01 Ω) • 0.09 % basic dc accuracy zeros in on tight Plant News • Multiple reading display with bargraph and readings web site. two-level backlight • True-rms ac voltage and current measure- • 0.025 % basic dc accuracy ment for accurate readings on all waveforms • True-rms ac, ac and dc • Frequency, capacitance and resistance “So you need • 100 kHz ac bandwidth for troubleshooting modern electronics • Auto and manual hold a DMM? Which • Two separate internal memories. One for logging up to 995 • Min/max/Average records irregular activity readings automatically at user selectable intervals and one for one do you pick?” 100 manually saved measurements. CAT IV 600 V, CAT III 1000 V www.fluke.com/plant CAT IV 600 V, CAT III 1000 V Test drive this product before you buy at www.fluke.com/plant Test drive this product before you buy “ABCs of DMM safety at www.fluke.com/plant – Cat IV can really mess up your DMM. Worse yet, it can kill you.” www.fluke.com/plant “Find hidden ac Fluke 80 Series III Fluke 112 problems with Analog/Digital Digital Multimeter true-rms” Multimeters www.fluke.com/plant Compact meters for installers High-performance meters and contractors for demanding industrial and electronic applications Compact digital multimeter with a wide range of functions for general purpose Fluke’s 80 Series III DMMs provide 11 func- measurements tions for electronic and industrial applications • 6000-count display provides improved including high-performance dc/ac voltage and resolution current measurement, frequency, duty cycle, • 0.7 % basic dc accuracy resistance, conductance, continuity, diode test • True-rms ac voltage and current measurement for accurate and capacitance measurement. readings on all waveforms • 4-1/2 digit mode, 20,000-count display (Fluke 87, 87/E only) • Frequency, capacitance and resistance capabilities • 0.05 % basic dc accuracy • Min/max/Average captures irregular activity • True-rms measurements (Fluke 85, 87 and 87/E only) • Backlight illuminates the display in dark workspaces CAT III 1000 V CAT III 600 V Test drive this product before you buy at www.fluke.com/plant Fluke 179 Save when you buy the Fluke TM 189 Multimeter + Multimeter/ToolPak FlukeView® Forms Combo Pak documentation and Save when you buy the analysis software Fluke 179 Multimeter & together ToolPak Magnetic Meter Hanging Kit together. We have bundled these two products We have bundled these two products together. So they can be ordered as a together. So they can be ordered as a single bundle at a lower price than single bundle at a lower price than purchasing the items purchasing the items separately. separately. Now you can get more out of your Fluke 179 Now you can get more out of your Fluke 189 Digital Multimeter. Digital Multimeter. Ask your distributor for details. Ask your distributor for details. 3 Electrical tools for industrial electricians Fluke 33X and 32X here’s nothing so Series Clamp annoying as a breaker Meters that keeps tripping, usually at the most Choose from Tinopportune times. More annoying 7 new clamp yet is not being able to figure out meters to get why as the production line stands the right combination of features silent waiting for you to work your and functions that fit your job. Proper use magic. The pressure’s on! • Measures amps, volts, ohms and continuity Beyond the basic measurements, • Backlight available on most models clamps were specifically designed • New inrush current feature measures motor-starting current the of clamp for – circuit loading and balance way a circuit breaker or overload unit sees it (selected models) • All models feature display hold button and auto shut-off of three-phase feeders – modern • 3-year warranty on 330 Series, 2-year warranty on 320 Series digital clamp meters have voltage • Includes: batteries, test leads, instruction card, safety sheet and meters in and resistance measurement carrying case capability as well. That means CAT III 600 V commercial it’s possible to make most, if not Test drive this product before you buy all, of the common every-day at www.fluke.com/plant measurements using a clamp settings meter. For optimum performance that clamp meter should be a true-rms model, like the Fluke 335, 336 or 337. Clamp meters in commercial environments Clamp meters are used at the panel board to measure circuit loading on T5-600 and T5-1000 feeders as well as on branch cir- Electrical Testers cuits. Measurements on the feeder should always be made at the load • AC amps to 100.0 A • Continuity/ohms to 1000 Ω side of the breaker or fuse, if these • 600 volts ac/dc (model T5-600)/ are available (such as in an 1000 volts ac/dc (model T5-1000) enclosed motor starter). • OpenJaw™ technology for easy current • Feeder cables should be measurements checked for balance as well as T5-600: CAT III 600 V loading: current on all three phases T5-1000: CAT III 1000 V, CAT IV 600 V should be more or less the same, to minimize the return current on the neutral.
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