From the control room to the factory floor, the Fluke 80 Series digital multimeter has earned a reputation as the digital multimeter that industrial technicians trust. When productivity suffers, the Fluke 80 Series provides the accuracy and advanced troubleshooting capabilities you need to solve problems fast.



Use the low pass filter function to accurately measure voltage and frequency on electrically noisy equipment such as variable speed motor drives. Use the peak capture function to detect occasional faults and switch as fast as 250 microseconds (µs).



And work with confidence. The Input Alert function provides an audio alert against misuse of the input plug. The Fluke 80 Series multimeters have been tested separately for use in CAT IV 600 V/CAT III 1000 V environments. The Series can withstand impulses in excess of 8000 V and reduce the risks associated with surges and surges.



At Fluke, our ideas come straight from the workplace. We work with users like you to build test kits that do the job you want them to do for as long as you need them—and give you full value. We design and manufacture the Fluke 80 Series multimeters in the U.S.A. The 80 Series is backed by a limited lifetime warranty. And we back it with a limited lifetime warranty so you can work smarter, faster, and safer.

Fluke ii915 Acoustic Imager: Detect, Locate, and Assess Anomalies

The Fluke ii915 Acoustic Imager is a powerful tool designed to identify and evaluate issues in various systems. With three distinct modes—LeakQ™, PDQ™, and MecQ™—this innovative device empowers maintenance professionals to take proactive measures and prevent costly problems. Let’s explore its capabilities:

Leak Detection with More Sensitivity
LeakQ™ Mode: Detect Hidden Costs

Leaks in compressed air, gas, steam, and vacuum systems can lead to significant financial losses. The Fluke ii915 simplifies leak detection by allowing technicians to visualize sound. As they scan hoses, fittings, and connections, the built-in acoustic array captures decibel levels per frequency. The resulting SoundMap™ overlays on a visual image, making it easy to pinpoint leaks—even during peak operation hours. Say goodbye to time-consuming inspections and hello to efficient leak detection. Fluke ii915 has the high frequency range and best sensitivity to do acoustic leak detection more efficiently.

Early Mechanical Issue Identification
MecQ™ Mode: Efficient Inspection for Conveyor Systems

Conveyor systems are notorious for their complexity and potential to disrupt production. The Fluke ii915 acoustic camera revolutionizes inspection by enabling contactless scanning of large areas. Advanced noise filtering ensures clear images, even in high-noise environments. Detecting potential mechanical issues early allows targeted maintenance, preventing unplanned downtime. For seamless operation and proactive maintenance of large conveyance systems, the Fluke ii915 Acoustic Imager with MecQ™ is the ultimate choice.

Visualizing the Invisible Threat
PDQ™ Mode: Locating Partial Discharge

Partial discharge poses serious risks, from arc flash fires to blackouts. The Fluke ii915 translates partial discharge sounds into visuals, precisely pinpointing their location. With an extended frequency range of 2-100 kHz, this tool can detect partial discharge even earlier and aids maintenance planning to prevent catastrophic events. High-voltage electricians, electrical test engineers, and grid maintenance teams can now see what was once invisible.

Key features
• Enhanced Performance: Improved detection performance for gas leaks, electrical discharges, and mechanical issues.
• LeakQ™ Mode: Estimated leak size and cost.
• PDQ Mode™: Assesses discharge severity.
• MecQ™ Mode: Proactively address potential problems in rotating mechanical components.
• Reporting Features: Integrated visual and textual tagging and annotation functionalities for streamlined reporting.
• Wireless Upload: Easily transfer data to Fluke Connect.

Simplify complex motor drive troubleshooting with guided test setups and automatic drive measurement that provide reliable, repeatable test results.

The Fluke MDA 550 Motor-Drive Analyzer saves time and the hassle of setting up complex measurements, and simplifies the troubleshooting process. Simply select a step-by-step guided test and measurement will show you where to make voltage and current connections, while preset measurement profiles ensure you will get all the data you need for every critical motor drive part, from input to output, the DC bus, and the motor itself . Doing simple to complex measurements? MDA-550 can do it. What's more, making reports before (as-found) and after (as-left) repairs or adjustments becomes more practical. This is all thanks to its built-in report generator feature.



The MDA-550 is an ideal portable motor drive analysis testing tool. Not only that, this tool can also be used to safely detect and solve common problems in inverter-type motor drive systems.



- Measures main motor drive parameters , including voltage, current, DC bus voltage level and AC ripple, voltage and current unbalance and harmonics, voltage modulation, and motor shaft voltage discharge.

- Performs broader harmonic measurements to identify the impact of low and high order harmonics on your power system.

- Performs guided measurements of motor drive input, DC bus, drive output, motor input, and shaft measurements with step-by-step graphical diagrams of voltage and current connections.

- Uses simple measurement settings with preset measurement profiles to automatically trigger data collection based on the selected test procedure.

- Quickly and easily generate reports that are perfect for documenting problem solving and collaborative work with others.

- Measure additional electrical parameters with a complete 500 MHz oscilloscope, meter and logger capability for a wide range of electrical and electronic measurements in industrial systems



The Fluke MDA-550 Motor Drive Analyzer uses guided test measurements to make analysis even easier



Drive input



Quickly measure input voltage and current to see if values ??are within acceptable limits by comparing the rated voltage to the actual supply voltage. It then checks the input current to determine if the current is within its maximum rating and the conductor size is appropriate. You can also check if the harmonic distortion is within an acceptable level. There are two options for doing this: carefully examine the shape of the waveform or look at the harmonics spectrum screen which displays total harmonic distortion and individual harmonics.



Imbalance of voltage and current



Check the voltage unbalance at the input terminals so you can make sure the voltage unbalance is not too high (> 6-8%), and the phase rotation is correct. You can also check for current unbalance, as too large an imbalance can indicate a driving rectifier problem.



Wider harmonic measurement



Excess harmonics are not only a threat to your rotating machine, but also to other equipment connected to the mains power system. As well as being able to detect motor drive harmonics, the MDA-550 can also detect the potential impact of inverter switching electronics. The MDA-550 has three harmonic ranges, 1st to 51st harmonics, 1 to 9 kHz, and 9 kHz to 150 kHz providing the ability to detect harmonic pollution problems.



Bus DC



In motor drives, the conversion of AC to DC inside the drive is very important. The reason is that for the best drive performance it is necessary to have the right voltage and adequate smoothing with low ripple. High ripple voltages can be an indicator of a faulty capacitor or a faulty motor connected. The logging function can be used to dynamically check the performance of the DC bus in operating mode when load is applied.



Drive output



Check drive output focusing on voltage to frequency (V/F) ratio, and voltage modulation. If the V/F ratio is high, the motor may overheat. With a low V/F ratio, the connected motor may not be able to provide the torque required at the load to carry out the process for which it is intended.



Voltage modulation



Pulse Width Modulation signal measurements are used to check for high voltage peaks that can damage motor winding insulation. The rise time or steepness of the impulse is indicated by a dV/dt reading (value of change in voltage over time), this must be compared with the specified motor insulation. Metering can also be used to measure switching frequency. Its purpose is to detect whether there is a potential problem with the switching electronics, or with grounding, as the signal drifts up and down.



Input Motor



Ensuring the supply of voltage at the motor input terminal is important. However, choosing a connecting cable between the drive and the motor is no less important. Incorrect cable selection can cause damage to the drive and motor due to overvoltage peaks. Checking that the current at the terminals is within the motor's rating is critical because excess current can cause the motor to overheat, reducing the life of the stator insulation which can cause premature failure of the motor.



Motor shaft voltage



The voltage impulse in the variable speed drive is generated from the circuit between the motor stator and the rotor until a voltage appears on the rotor shaft. If the rotor shaft voltage exceeds the insulating capacity of the bearing grease, flashover currents (glow) may occur. As a result, pitting and fluting of the motor bearing rotation occurs, namely damage that causes the motor to fail prematurely. The MDA-550 is equipped with a carbon fiber brushed probe tip that makes it easy for you to detect destructive flashover currents. Meanwhile, the amplitude of the impulse and the number of events can be used as a consideration in taking preventive action. With the addition of these accessories and capabilities, you can spot potential faults without the need to buy expensive permanent solutions.



Step-by-step guided measurements ensure you have the data you need, when you need it



The MDA-550 is designed to help you quickly and easily test and troubleshoot common three-phase and single-phase inverter-type motor drive systems. Onscreen information and a step-by-step setup guide make it easy for you to configure the analyzer. Not only that, the information and guide will also provide the required drive measurements. That way, you can quickly make informed decisions regarding maintenance. From power input to attached motor, the MDA-550 provides measurement capabilities for the fastest motor drive solutions.

Now there is one intrinsically safe digital multimeter (DMM) you can use in IIC (gas), in Zones 1 and 2, and IIIC (dust), Zones 21 and 22. Whether you work in an oil, chemical, or pharmaceutical environment , all the test and troubleshooting capabilities you need are in the most robust and intrinsically secure (IS) Fluke DMM ever made. The Fluke 28 II Ex is also water, dust and drop resistant. You will be equipped to solve all problems, inside and outside the danger zone, without compromising on compliance or measurement performance.