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Most loop calibrators have a 24V loop power supply for powering and testing process transmitters. This is useful for testing transmitter off line from the circuit they are installed if they need calibration or are suspected of being defective. In this operating mode most loop calibrators provide the 24V loop power and simultaneously measure the 4 to 20 mA signal drawn by the transmitter. To test a transmitter in this mode, turn on loop power and select mA measure. Disconnect the transmitter from...

AC frequency is the number of cycles per second in an alternating current (AC) sine wave.

Current is the rate at which electrons flow past a point in a complete electrical circuit.

Learn how to diagnose power quality issues in older electrical systems using a Fluke multimeters and oscilloscope.

Get 3 phase power measurements 50% faster with Fieldsense clamp meters. How to measure 3 phase voltage and current simultaneously.

The easy-to-use data management and reporting solution.

Instantaneous irradiance measurements up to 1400 w/m2. Includes temperature, compass and inclination readings.

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By Brian Harrison According to a Fluke 2019 survey, roughly 50 percent of maintenance and reliability professionals were actively planning Industrial Internet of Things (IIoT) initiatives. This survey preceded the challenges brought about by COVID-19. At the time, more than half of the teams interviewed found the IIoT process to be more complicated than anticipated because of an essential prerequisite—collaboration with other teams and departments. Despite the business disruption caused by the...

Resistance is measured using analog or digital multimeters. These tools also measure current, voltage, and more for various applications. Why measure resistance? To determine the condition of a circuit or component. The higher the resistance, the lower the current flow, and vice versa. In general, the resistance of components used to control circuits (such as switches and relay contacts) starts out very low and increases over time due to factors such as wear and dirt. Loads such as motors and solenoids...

Circuits and equipment may be designed to operate at a fixed or variable frequency. They may perform abnormally if operated at a different frequency than specified. For example, an ac motor designed to operate at 60 Hz operates slower if the frequency is less than 60 Hz, or faster if frequency exceeds 60 Hz. For ac motors, any change in frequency causes a proportional change in motor speed. A five percent reduction in frequency yields a five percent reduction in motor speed. Some digital multimeters...

Turn dial to dc voltage. Some digital multimeters (DMMs) also include dc millivolts. If uncertain of which to choose, start with dc voltage, which handles higher voltage. First insert the black probe into the COM jack. Steps for measuring dc voltage with a digital multimeter Then insert the red probes into the V Ω jack. When finished, remove the probes in reverse order: red first, then black. Connect the test probes to the circuit: black to the negative polarity test point (circuit ground),...

Guide to clamp meter symbols, buttons, display and dial functions.

The 4 mA to 20 mA current loop is a common method of transmitting sensor information in many industrial process monitoring applications—typically in systems monitoring pressure, temperature, pH, flow, or other physical factors. These systems employ a two-wire, 4 mA to 20 mA current loop, in which a single twisted-pair cable supplies power to a transmitter and also carries the output signal. The loop’s operation is straightforward: a sensor’s output voltage is first converted to a proportional...

Fluke engineers its clamp meters to withstand a high degree of unconventional use—as a wedge, makeshift pliers, nutcracker, whatever a tech might dream up in a moment of need.

Safety is always a priority when working with electricity in industrial sites.

Hall Effect clamp meters can measure both ac and dc current up to the kilohertz (1000 Hz) range

Features 384 x 288 infrared resolution, touchscreen, video recording, dew-point calculation.

Measuring ac current with a clamp meter’s jaws. Note: Current flowing in opposite directions cancels each other. If current is moving in opposite directions, place just one conductor within the clamp during measurement.

By: Jacek Karpol-Nawrocki and Christian Beham, Professional Service Managers at Fluke Reliability Fluke Mobile is a software application optimized for mobile workers using the IBM Maximo EAM platform. By integrating Fluke Mobile with your Maximo system, you enable maintenance teams to respond to corrective maintenance requests and work orders in a single workflow on a tablet or smartphone. The seamless integration of unplanned and planned maintenance requests on a mobile device helps organizations...

Learn how the best-selling Fluke 2 Pole electrical tester can help you safely check live voltage on double pole circuit breakers.

Reopening the world in the wake of a pandemic brings new health and safety concerns. Much of the emphasis has been on personal hygiene, such as hand washing, social distancing, and face covering. But as industries begin to open, a new normal awaits them where personal hygiene must extend to shared work surfaces. The World Health Organization (WHO) recommends regular cleaning of your frequently touched surfaces. Maintenance technicians, electricians, and others who share tools need to understand and...

Custody transfer operations in the oil and gas business requires some of the most precise measurements in all of industry. As part of custody transfer, technicians routinely calibrate all the pressure and temperature transmitters involved in the flow of oil and gas as well as the pressure in the pipelines and related equipment themselves. Fluke offers both handheld and desktop precision pressure calibrators and test gauges accurate and rugged enough for gas and custody applications. Plus, many of...

Testing medical gases and piping systems in healthcare facilities and hospitals presents multiple challenges for maintenance teams. Learn why efficient leak detection is critical.

In this video, you will learn how to calibrate a pressure transmitter using the Fluke 729 Automatic Pressure Calibrator. { "@context": "http://schema.org", "@type": "VideoObject", "name": "How to Perform a Pressure Calibration Using the Fluke 729", "description": "This 5-minute video shows how to calibrate a pressure transmitter using the Fluke 729 Automatic Pressure Calibrator.", "transcript": "This video describes how to connect to a pressure transmitter, set up the device configuration, and...

Grid connected photovoltaic systems are growing in importance as sustainable energy sources. The DC power of the solar panels is converted into an AC power by inverters. These are transformerless and, besides generating AC current, also inject a small DC Current. Excessive DC current injection into an AC network can cause problems like transformer saturation, however, which will cause additional losses and reduce transformer lifetime. For measuring these DC components, we need a Power Quality Analyzer...

Read the wastewater plant case study on how the Fluke 3540 Power Monitor paid for itself in five months by eliminating the need to use contractors.

Compare IP rating, battery life and other features. What is the difference between the Fluke 87V MAX and the 87V digital multimeter?

How to use data to prove the value of PV and microgrids in order to provide a safer, cheaper, more secure and more reliable distributed energy electric power system.

Learn how for some use cases, a telephoto, macro or wide angle lens can prove invaluable. Plus, find out why ‘smart lenses' are better than the alternative.

How to LOTO a PV system. Guidance for electrical safety in solar power plants, PV installation and solar panel safety considerations.

430 series Power Quality Analyzers Q: The Communication between my device (435 3-phase Power Quality and Energy Analyzer, Series I and Series II, 1735 3-phase Power Logger, VR1710 Voltage Quality Recorder) and the Software PowerLog/PowerLog Classic is not working, why is that?  A: The product FirmWare and PowerLog SoftWare versions have to be compatible with each other to get the communication to work. Check compatibality on our website Q: How do I transfer data from my power quality...

A thermal imaging program is a powerful tool in both preventive maintenance and when troubleshooting critical equipment; both of which can save time and money. Adding thermal imaging inspections is a huge upgrade in your ability to detect and fix issues before unexpected downtime occurs. Thermal imaging in your business Working in maintenance, you already have broad experience with many types of equipment and failure scenarios. Your experience, combined with a thermal camera and some basic training,...

Rugged, dustproof IP67 outer shell for the most extreme work sites. Measure up to 1000 V ac and dc.

At Fluke, our commitment to quality is the foundation of our success. We are dedicated to delivering products and services that meet or exceed the highest quality standards in the industry, as defined by ISO requirements, customer expectations, and our own corporate values. Our practices reflect our commitment to customer satisfaction, continuous improvement, and the pursuit of excellence across our operations worldwide.Fluke Corporate Quality Manuals and PoliciesQuality ManualsFluke Corporate Quality...

Solar energy expert guidance on how to design and commission a photovoltaic system for maximum performance including longevity of equipment, safety and ROI.

Using Fluke tools for energy efficiency and cost savings. How the Figge Art Museum automated their HVAC control systems, reduced energy consumption and saved on annual energy costs

Versatile, three-phase Fluke Connect-compatible power loggers for conducting energy, load and power quality studies.

Insulated hand tools provide critical safety protection for electricians and technicians who work with live electrical equipment.

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A ski resort near Silverthorn, CO., depends on its snowmaking capacity to augment nature's snowfall, especially during drought years.

Electricians are discovering that the new Fluke 345 goes beyond simply monitoring voltage or current. It displays waveforms and harmonics, performs power measurements for power-factor evaluations, measures inrush current, and logs data over time for later analysis.

Why Connected Reliability?

As the wind energy industry evolves, so does the wind technician community. Learn how a unique wind tech community shares troubleshooting and solutions online.

Diagnosing and troubleshooting power quality issues in medical equipment in hospitals and health care facilities.

At the end of April 2005, Crystal Mountain Resort in Washington suffered catastrophic failure of two power filters associated with their chair lifts.

Adjustable speed drives (ASDs) can be both a source and a victim of poor power quality.

Electrical noise is the result of more or less random electrical signals getting coupled into circuits where they are unwanted, i.e., where they disrupt information-carrying signals.

Many power quality problems show up at the branch circuit level. There's a simple reason for this: that's where most of the sensitive loads (and sensitive employees) are located.

B3 Electric Case Study Blog Post

Vibration screening helps maintenance and reliability teams avoid rotating machine failure.

Using a three-phase power monitor and cloud-based condition monitoring software resulted in savings of more than $40K. Many people rely heavily on eyeglasses to see. According to Vision Council of America, 64% of adults wear eyeglasses. OptoTech is a leader in optical machinery equipment. It has a broad range of machinery and process technology for both precision and ophthalmic optics and offers complete production lines including generating, edging/centering, and polishing and measuring. The company...

The PLS HV2R red beam rotary lasers are designed for the construction job site, offering a rugged ergonomic design and simplified controls. The HV2R emits a laser line in the horizontal or vertical plane. The HV2R rotary lasers also emit a point from the top when placed in the vertical position. The HV2R lasers are ideal for use by general contractors, electricians, plumbers, and landscapers in both interior and exterior applications.

The PLS HV2G green beam rotary lasers are designed for the construction job site, offering a rugged ergonomic design and simplified controls. The HV2G emits a laser line in the horizontal or vertical plane. The HV2G rotary lasers also emit a point from the top when placed in the vertical position. The HV2G lasers are ideal for use by general contractors, electricians, plumbers, and landscapers in both interior and exterior applications.

For three years in a row, a particularly large three-phase motor would fail twice a year. The facility maintenance manager called in both the electrical contractor and the motor manufacturer, who pointed fingers at each other but failed to resolve anything on site.

Because power quality issues are difficult to pinpoint, clients often reach the wrong conclusions about their power issues. That often leads to expensive solutions that don't actually correct the underlying problem.

The H2 is a horizontal only rotary laser. The H2 is easy-to-use and fully self-leveling, designed for interior and exterior layout projects.

This case history is a classic example of the importance of a systematic approach to solving a problem. It involves a contractor who works with several high-technology manufacturing plants.

One winter morning, the electrician received a call from a local school. The caller said a transformer supplying power to three portable classrooms was making a chattering noise, as if something were loose inside.

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Poor grounding contributes to unnecessary downtime, but a lack of good grounding is dangerous and increases the risk of equipment failure. Without an effective grounding system, you could be exposed to the risk of electric shock, not to mention instrumentation errors, harmonic distortion issues, power factor problems and a host of possible intermittent dilemmas. If fault currents have no path to the ground through a properly designed and maintained grounding system, they will find unintended paths that could include people.

Selective testing is very similar to the Fall-of-Potential testing, providing all the same measurements, but in a much safer and easier way. This is because with Selective testing, the earth electrode of interest does not need to be disconnected from its connection to the site! The technician does not have to endanger himself by disconnecting ground, nor endanger other personnel or electrical equipment inside a non-grounded structure.

Maintenance professionals may not realize how using vibration sensors can improve facility efficiency. Learn about which industrial sectors can benefit from vibration sensors.

Three organizations found cost and time savings after implementing the Fluke 3540 FC Three-Phase Power Monitor into their maintenance programs.

Glossary of Vibration Terms

Electrical Glossary

How to measure ground resistance. When conducting a grounding audit of a central office there are three different measurements required.

Grounding Basics

Fall-of-Potential Measurement

Soil Resistivity Measurement

Fluke Corporation has identified a safety issue affecting certain Fluke T110, T130, and T150 Two-Pole Voltage Testers (“T-Pole Testers”). As a precautionary measure, Fluke has decided to voluntarily recall all of these products and provide affected customers with new and improved equivalent replacement products.

The basic functions of a thermal camera are not difficult to master. With some basic training and practice, you can learn what the buttons are for, how to navigate the menus, how to focus, and how to capture images.

With the recent release of the 2018 edition of the NFPA 70E standard, many users are finding it challenging to interpret what it says and prioritize where they should focus their attention. The short answer is that the entire 70E standard is important; not just one chapter, article or section.

Professional 320 x 240 Thermal Imager. Smartest, most intuitive user interface. Increased thermal sensitivity to capture the smallest differences. Latest technology for on-screen clarity.

Open fork measurement without touching a live wire

Professional 240 x 180 Thermal Imager. Smartest, most intuitive user interface. Increased thermal sensitivity to capture the smallest differences. Latest technology for on-screen clarity.

The Fluke Ti450 PRO introduces a leading-edge visual infrared experience in a professional 320 x 240 thermal imager.

200506 - pf test

Industrial inspections require a powerful diagnostic borescope designed to stand up to the dirtiest, most harsh environments.

Electrical and electronic equipment is rated for operation at a specific voltage. Voltage dips, swells and transients can cause trouble with industrial controls as well as equipment such as computers. Surges are generally more damaging to equipment than dips, but both can harm industrial equipment and cause outages, failures and other power quality problems. What are voltage dips? Voltage dips (also known as “sags”) are a reduction of voltage of 10% or more below normal or recommended usage,...

These temperature probes are available in a variety of sheath materials appropriate for your specific application. In addition to our metal-sheathed temperature probes, we offer flexible PTFE encapsulated and silicone coated thermistors that have smaller tips and can measure those places where even a metal-sheathed thermistor can't reach.

If you or your company are looking for ways to build more electrical skills, consider this two-hour online course on Digital Multimeter Basics from Fluke. We developed this course to help multimeter users get more out of their meters. Whether you use a multimeter for basic electrical installation and commissioning, repairs and troubleshooting, or your own personal work, the information in this course will help you get the job done. Using a multimeter to measure voltage is fairly straight forward,...

Whether you're building automobiles or electronic components, processing food, maintaining electrical systems, or making plastic, temperature inspection using infrared (IR) cameras and spot thermometers is becoming one of the quickest, safest ways to accurately inspect electrical, electronic, mechanical, HVAC, and process control systems.

Fluke 64 MAX IR Thermometer captures measurements while unattended, freeing maintenance teams to focus on other issues The new, rugged IR thermometer logs up to 99 data points eliminating the need to manually record measurements Everett, Wash., May 18, 2017 – Temperature events rarely occur while technicians are around to capture them, complicating the troubleshooting of electrical, HVAC, and industrial equipment. The new Fluke 64 MAX IR Thermometer features Auto Capture allowing technicians to...

The Industrial Internet of Things (IIOT)-the concept of interconnected applications, equipment, and technology- is more than just an abstraction.

The North American Board of Certified Energy Practitioners (NABCEP) offers certifications and certificate programs geared toward renewable energy professionals throughout North America, including a certification program for solar electric installers.

Prevent electrocution with electrical PPE requirements and learn the four types of PPE for electrical work.

The Fluke 1738 Advanced Three-Phase Power Logger automatically captures and logs more than 500 power quality parameters to give electricians and technicians more visibility into the data needed to make better power quality and energy consumption decisions.

MacDonald-Miller standardized on the Fluke 902 Clamp Meter when it came out several years ago.

Ensuring a dc volt is the same wherever you go and on whatever device you own is the job of national and international standards organizations with an assist from private industry.

The Motor and Drive Troubleshooting online course is designed to help maintenance professionals better understand the electrical, electronic and mechanical aspects of motor-drive system health. This course will help you better evaluate and troubleshoot three categories of common motor/drive issues: erratic, repeating, and preventable faults and failures. Constantly troubleshooting the same or similar motor and drive problems can not only be a headache, it can severely impact uptime and the cost of...

The Fluke 1732 and 1734 delivers easy to use three phase power measurements for identifying energy waste, overloaded circuits and routine load studies.

The Fluke 1630-2 FC Stakeless Earth Ground Clamp is a heavy-duty clamp jaw that allows you to test the grounding components of equipment in hard-to-reach spaces.

Repairs are always unexpected and they can be costly. Keep your camera in top operating condition and control your cost of ownership with a Fluke Gold, Silver or Bronze CarePlan.

The FLUKE DMS (data management software) is an efficient software for data recording and administration of test results for electrical installation or portable appliance testing.

Seven-piece set for performing 3- and 4-pole fall-of-potential testing that measures the ability of the earth ground system or individual electrode to dissipate energy from the site.

This powerful software provides a suite of tools that views, optimizes, annotates, and analyzes IR thermal images and videos. It also generates fully customizable and professional-looking reports with the push of a button or in a few easy steps.

Fluke News Plus Research Archive Articles

Late on a Sunday afternoon the Kern County Fire Department responded to a call at a store on Rosedale Highway in Bakersfield, California. Crews found that a row of solar panels on the roof had caught fire. Some of the panels were still live when the crew arrived, so the fire crew had to take extra precautions until electrical power could be disconnected.