Measuring Tools
Fluke Fluke 1670 Series Multifunction Installation Testers
The Fluke 1670 Series Multifunction Installation Testers will revolutionize the way you work. With an ergonomic design, seamless user interface, integrated data management capabilities, wireless connectivity (1673 FC and 1674 FC), and comprehensive reporting software, the 1670 Series sets the new standard for an integrated installation testing solution.
Reliable installation testing is essential for ensuring the safety, optimal functionality, and integrity of a facility’s electrical systems. The 1670 Series' rugged design allows you to verify the safety of electrical installations in domestic, commercial, and industrial applications while meeting the requirements of IEC/HD 60364-6 and all relevant local installation test standards.
With the 1670 Series, you’ll be able to perform your required testing faster and reduce the time you spend on documentation, all while having the ultimate confidence in the data you’re collecting.
Simplified User Interface and Testing Setup
The 1670 Series takes data management to the next level streamlining test set up and preparation with an advanced bidirectional user interface. When setting up your project, the hierarchical tree topology for clients, sites, distribution boards, circuits, and test points can be easily customized using the high-resolution color touchscreen, or via TruTest™ desktop software. Edit, add, delete, or modify information directly on the tool as you test to ensure accurate data, or transfer updates to your tester via TruTest™ desktop software. Easy-to-read test tables help you quickly see that you are capturing the right measurement data at the right test point, every time. Now you can spend less time setting up your tester and organizing data, giving you more time to perform valuable testing.
Perform All Required Tests up to 30% Faster
Installation testing can be a time-consuming process. It often requires repetitive, manual test setups that can be frustrating and introduce the opportunity for errors.
The Fluke 1670 Series leverages a unique Auto Test function (1673 FC / 1674 FC) that enables you to run through an entire installation test sequence at the touch of a button. An integrated help function provides a visual connection guide to help ensure measurement success. Automatic measurement validation, with user-defined limit warnings, compares test results to the relevant standards and provides you with an immediate visual pass/fail indication to quickly identify potential issues. Eliminating manual testing and automating measurement validation means you can perform your tests up to 30% faster, giving you more time to focus on other critical tasks and increasing your productivity.
* 30% faster testing compared to manual testing.
Reduce Documentation and Reporting Time
The Fluke 1670 Series Multifunction Installation Testers help you reduce documentation time. Link test results to the circuit or point under test, reducing manual data entry and recordkeeping. You can also preview inspection results in the field via the tester and Fluke Connect™ compatibility making it easy to share your data from the field. Fluke TruTest™ Software lets you generate inspection certificates on site with just a few simple steps, so you can finalize and invoice your inspection at the time of service.
Insulation PreTest™ Functionality
The Fluke 1674 FC includes a patented Insulation PreTest™, so you can better protect the installation and avoid costly mistakes. If the tester detects that appliances are connected to the system during the test, it will stop the insulation test and provide a visual and audible warning. This helps eliminate accidental damage to peripheral equipment and saves you both time and money.
Optimized Software and Reporting
Fluke TruTest™ Software simplifies electrical system data management and reporting, eliminating the hassle of traditional data management with a single, integrated Fluke solution. Proper data management and testing information is critical for producing easy-to-understand reports for clients or your management team. TruTest™ streamlines the process by allowing you to create and transfer testing metadata between the software and your installation tester using a USB-C interface cable, or via the Fluke Connect mobile app, which helps you ensure accurate results.
The user-friendly interface, intuitive workflow, and report builder means that you can quickly format your measurement data into printable test certificates and reports, complete with your company logo and electronic signature. The live onscreen dashboard allows you to see the status of all your clients instantly and navigate to further levels of detail if desired.
Fluke TruTest Software allows you to create certificates that are compliant with a growing list of regional reports, including BS7671, DIN VDE 0100-600, ÖVE/ÖNORM E 8101, NIN/NIV, NEN3140, and other European installation test standards. All these reports are available at the touch of a button, and a pre-configured international template ensures that no matter your location, TruTest Software has you covered.
Fluke Connect™ Compatibility
The Fluke Connect™ mobile app allows you to download measurement data from your installation tester for later export to TruTest™ desktop software, allowing for prompt and effective reporting even while on location. Connect additional test tools, like the Fluke 369 FC Leakage Current Clamp or the Fluke 1630-2 FC Earth Ground Clamp to the 1673 FC and 1674 FC to synchronize data between auxiliary devices and test points, providing your clients with a clearer picture of overall facility health.
Additional Capabilities
• Field updatable — you can apply any changes to regulations or enhancements to the tester in the field.
• Compact and lightweight (less than 1.6 kg), with a padded neck strap to free your hands.
• Full-color touch screen and tactile rotary knob for fast navigation, with no complex multi-level menus.
• Rechargeable 2,500 mAh Li-ion battery to cover a full day of testing.
• Standard USB-C charging Port with fast charging support for convenient on-the-go charging.
• Newly designed professional hard case for transporting and protecting your installation tester and accessories.
• Additional high current loop mode for faster measurements than loop tests with non-trip mode for RCD protected circuits.
• Insulation Monitoring Devices (IMD) tests.
• Surge Protection Device (SPD) functional test.
• Voltage drop measurement function.
• Z Max memory for loop tests to support easy evaluation of the highest loop test value.
• Unique zero adapter for fast, reliable, and accurate test lead and mains cord compensation.
• Simultaneous readings of voltage measurements between L-N, L-PE, and N-PE using the mains cord. No need to change measurement connections.
• RCD trip current and trip time measurement in parallel (RCD type AC, A, B, F and GFCI).
• PEFC or PSC and loop impedance measurement in parallel, displays them together on the dual display.
• Ring testing lets you select the required input sockets without exchanging test leads.
• Continuity test with low test current (10 mA) to measure motor windings.
• Earth Volt Touchpad detects raised earth voltages > 50 V, indicating potentially dangerous situations.
Reliable installation testing is essential for ensuring the safety, optimal functionality, and integrity of a facility’s electrical systems. The 1670 Series' rugged design allows you to verify the safety of electrical installations in domestic, commercial, and industrial applications while meeting the requirements of IEC/HD 60364-6 and all relevant local installation test standards.
With the 1670 Series, you’ll be able to perform your required testing faster and reduce the time you spend on documentation, all while having the ultimate confidence in the data you’re collecting.
Simplified User Interface and Testing Setup
The 1670 Series takes data management to the next level streamlining test set up and preparation with an advanced bidirectional user interface. When setting up your project, the hierarchical tree topology for clients, sites, distribution boards, circuits, and test points can be easily customized using the high-resolution color touchscreen, or via TruTest™ desktop software. Edit, add, delete, or modify information directly on the tool as you test to ensure accurate data, or transfer updates to your tester via TruTest™ desktop software. Easy-to-read test tables help you quickly see that you are capturing the right measurement data at the right test point, every time. Now you can spend less time setting up your tester and organizing data, giving you more time to perform valuable testing.
Perform All Required Tests up to 30% Faster
Installation testing can be a time-consuming process. It often requires repetitive, manual test setups that can be frustrating and introduce the opportunity for errors.
The Fluke 1670 Series leverages a unique Auto Test function (1673 FC / 1674 FC) that enables you to run through an entire installation test sequence at the touch of a button. An integrated help function provides a visual connection guide to help ensure measurement success. Automatic measurement validation, with user-defined limit warnings, compares test results to the relevant standards and provides you with an immediate visual pass/fail indication to quickly identify potential issues. Eliminating manual testing and automating measurement validation means you can perform your tests up to 30% faster, giving you more time to focus on other critical tasks and increasing your productivity.
* 30% faster testing compared to manual testing.
Reduce Documentation and Reporting Time
The Fluke 1670 Series Multifunction Installation Testers help you reduce documentation time. Link test results to the circuit or point under test, reducing manual data entry and recordkeeping. You can also preview inspection results in the field via the tester and Fluke Connect™ compatibility making it easy to share your data from the field. Fluke TruTest™ Software lets you generate inspection certificates on site with just a few simple steps, so you can finalize and invoice your inspection at the time of service.
Insulation PreTest™ Functionality
The Fluke 1674 FC includes a patented Insulation PreTest™, so you can better protect the installation and avoid costly mistakes. If the tester detects that appliances are connected to the system during the test, it will stop the insulation test and provide a visual and audible warning. This helps eliminate accidental damage to peripheral equipment and saves you both time and money.
Optimized Software and Reporting
Fluke TruTest™ Software simplifies electrical system data management and reporting, eliminating the hassle of traditional data management with a single, integrated Fluke solution. Proper data management and testing information is critical for producing easy-to-understand reports for clients or your management team. TruTest™ streamlines the process by allowing you to create and transfer testing metadata between the software and your installation tester using a USB-C interface cable, or via the Fluke Connect mobile app, which helps you ensure accurate results.
The user-friendly interface, intuitive workflow, and report builder means that you can quickly format your measurement data into printable test certificates and reports, complete with your company logo and electronic signature. The live onscreen dashboard allows you to see the status of all your clients instantly and navigate to further levels of detail if desired.
Fluke TruTest Software allows you to create certificates that are compliant with a growing list of regional reports, including BS7671, DIN VDE 0100-600, ÖVE/ÖNORM E 8101, NIN/NIV, NEN3140, and other European installation test standards. All these reports are available at the touch of a button, and a pre-configured international template ensures that no matter your location, TruTest Software has you covered.
Fluke Connect™ Compatibility
The Fluke Connect™ mobile app allows you to download measurement data from your installation tester for later export to TruTest™ desktop software, allowing for prompt and effective reporting even while on location. Connect additional test tools, like the Fluke 369 FC Leakage Current Clamp or the Fluke 1630-2 FC Earth Ground Clamp to the 1673 FC and 1674 FC to synchronize data between auxiliary devices and test points, providing your clients with a clearer picture of overall facility health.
Additional Capabilities
• Field updatable — you can apply any changes to regulations or enhancements to the tester in the field.
• Compact and lightweight (less than 1.6 kg), with a padded neck strap to free your hands.
• Full-color touch screen and tactile rotary knob for fast navigation, with no complex multi-level menus.
• Rechargeable 2,500 mAh Li-ion battery to cover a full day of testing.
• Standard USB-C charging Port with fast charging support for convenient on-the-go charging.
• Newly designed professional hard case for transporting and protecting your installation tester and accessories.
• Additional high current loop mode for faster measurements than loop tests with non-trip mode for RCD protected circuits.
• Insulation Monitoring Devices (IMD) tests.
• Surge Protection Device (SPD) functional test.
• Voltage drop measurement function.
• Z Max memory for loop tests to support easy evaluation of the highest loop test value.
• Unique zero adapter for fast, reliable, and accurate test lead and mains cord compensation.
• Simultaneous readings of voltage measurements between L-N, L-PE, and N-PE using the mains cord. No need to change measurement connections.
• RCD trip current and trip time measurement in parallel (RCD type AC, A, B, F and GFCI).
• PEFC or PSC and loop impedance measurement in parallel, displays them together on the dual display.
• Ring testing lets you select the required input sockets without exchanging test leads.
• Continuity test with low test current (10 mA) to measure motor windings.
• Earth Volt Touchpad detects raised earth voltages > 50 V, indicating potentially dangerous situations.
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Industrial gauges for the toughest applications.
New diagnostic functionality to maximize in-factory productivity. The new Fluke 289 is the next generation of high performance industrial recording multimeters designed to solve complex problems in electronics, factory automation, power distribution and electromechanical equipment. With the ability to log data and display it graphically on the screen, you can resolve issues faster and help minimize downtime. Let the new Fluke 289 be the overseer of the system or process while you troubleshoot other issues.
Also be sure to check out the Fluke 287 True-rms Electronics Logging Multimeter with TrendCapture designed for electronics professionals.
Maximize productivity with the Fluke 289 and FlukeView combo kit. With built-in data logger capabilities and TrendCapture, the Fluke 289 helps you track down the occasional hard-to-find problem, monitoring equipment with every function while you do other tasks. Layer acquired data from six meters or six time periods to find cause and effect relationships or for condition monitoring in the FVF software. Turn your data into graphs and tables for professional reports. The 289/FVF combo kit gives you a simple & affordable approach to predictive maintenance.
New diagnostic functionality to maximize in-factory productivity. The new Fluke 289 is the next generation of high performance industrial recording multimeters designed to solve complex problems in electronics, factory automation, power distribution and electromechanical equipment. With the ability to log data and display it graphically on the screen, you can resolve issues faster and help minimize downtime. Let the new Fluke 289 be the overseer of the system or process while you troubleshoot other issues.
Also be sure to check out the Fluke 287 True-rms Electronics Logging Multimeter with TrendCapture designed for electronics professionals.
Maximize productivity with the Fluke 289 and FlukeView combo kit. With built-in data logger capabilities and TrendCapture, the Fluke 289 helps you track down the occasional hard-to-find problem, monitoring equipment with every function while you do other tasks. Layer acquired data from six meters or six time periods to find cause and effect relationships or for condition monitoring in the FVF software. Turn your data into graphs and tables for professional reports. The 289/FVF combo kit gives you a simple & affordable approach to predictive maintenance.
Fluke 124B Offers
Compact and rugged, this oscilloscope is ideal for industrial electrical and electro-mechanical equipment troubleshooting and maintenance applications. Features innovative functions that help technicians troubleshoot faster for quicker results and to keep their systems running smoothly. Additionally, triggering displays waveforms without having to adjust amplitude, timebase, and trigger settings.
Features
- Key measurements: Voltage and power waveforms
- Automatically capture, view and analyze complex waveforms: Fluke Connect and View™ triggering automatically displays waveforms without having to adjust amplitude, timebase and trigger settings, while Intellaset™ technology analyzes the signal and automatically displays critical numerical readings, making troubleshooting faster than ever
- View data locally on the instrument, or via Fluke Connect mobile app
- Dual-input digital oscilloscope and multimeter
- 40 MHz oscilloscope bandwidth
- Two 5000-count true-rms digital multimeters
- Connect-and-View trigger simplicity for hands-off operation
- IntellaSet technology automatically and intelligently adjusts numerical readout based on the measured signal
- Dual-input waveform and meter reading recorder for trending data over extended periods
- Recorder Event Detect captures elusive intermittent signals on repetitive waveforms up to 4 kHz
- Shielded test leads for oscilloscope, resistance and continuity measurements
- Resistance, continuity, diode and capacitance meter measurements
- Power measurements (W, VA, VAR, PF, DPF, Hz)
- Save or recall data and instrument setups
- Store instrument setups defined by a test sequence for routine maintenance or most often used test procedures
- External optically isolated USB interface to transfer, archive and analyze scope or meter data
- Optional WiFi adapter connected to internal USB port to wirelessly transfer information to the PC, laptop or Fluke Connect mobile app
- Rugged design to withstand 3 g Vibration, 30 g shock, and rated IP51 according to EN/IEC60529
- Highest safety rating in the industry: safety rated for CAT IV 600 V
Connect-and-View triggering for an instant, stable display
Oscilloscope users know how difficult triggering can be. Using the wrong settings can lead to unstable waveform captures, and sometimes the wrong measurement data. This instrument's unique Connect-andView triggering technology recognizes signal patterns and automatically sets up the correct triggering to provide a stable, reliable, and repeatable display. Connect-and-View triggering is designed to work with virtually any signal, including motor drives and control signals - without adjusting parameters, or even touching a button. Signal changes are instantly recognized and settings are automatically adjusted, providing a stable display even when measuring multiple test points in quick succession.
IntellaSet/AutoReading
The Auto Readings function with Fluke IntellaSet technology uses proprietary algorithms to intelligently analyze the measured waveform and automatically displays the most appropriate numerical measurements on the screen, so you can get the data you need easier than ever before. As an example, when the measured waveform is a line voltage signal, the Vrms and Hz readings are automatically displayed, whereas if the measured waveform is a square wave, the Vpeak-peak, and Hz readings are automatically displayed. Using IntellaSet technology in conjunction with Connect-and-View automatic triggering you can be sure you're seeing not only the correct waveform but the appropriate numerical reading as well. All without touching a button.
Industrial equipment needs a reliable power supply to operate properly, use the dual input to obtain key power measurements
For single-phase or 3-phase balanced systems, the dual inputs of the Industrial ScopeMeter 120B Series can measure AC+DC RMS voltage on channel A and AC+DC RMS current on channel B. This oscilloscope can then calculate; frequency, phase angle, active power (kW), reactive power (VA or var), power factor (PF), or displacement power factor (DPF) and can also calculate the power values for a 3-phase system where all phases have equal voltage and currents. This applies to both balanced systems and resistive loads.
One test lead to measure multiple electrical parameters
High-frequency waveform, meter, capacitance, and resistance measurements as well as continuity checks are all covered by a single set of shielded test leads. No time is wasted finding or swapping leads.
Fluke Connect mobile app compatibility
Automated industrial machinery is harder than ever to troubleshoot. It's not enough to just know where you have to test, you also have to know what to look for and that can be hard without baseline measurement data or access to subject matter experts. This Fluke Connect Assets wireless system of software and wireless test tools enables technicians to reduce maintenance costs and increase uptime with accurate equipment records and maintenance data that is easy to interpret, and share. Compare and contrast test point measurement data and trends so you can better understand signal characteristics and changes over time. And, by storing maintenance data on the Fluke Cloud you can enable team members to access it from wherever and whenever they need to so you can get advice or approvals in the field and get your systems up and running faster than ever before.
Use the comprehensive recorder modes to help find intermittent faults with ease
The toughest faults to find are those that happen only once in a while-intermittent event. They can be caused by bad connections, dust, dirt, corrosion, or simply broken wiring or connectors. Other factors, like line outages and sags or the starting and stopping of a motor, can also cause intermittent events resulting in equipment shutdowns. When these events happen, you may not be around to see them. But, your Fluke ScopeMeter Test Tool will. You can either plot the minimum and maximum peak measurement values or record the waveform trace. And, with expandable micro SD memory, recording sessions can be done for up to 14 days. This recorder is even more powerful with the addition of Recorder Event Detect, which makes detecting and logging intermittent faults easier than ever. Just set a threshold on a meter reading or scope trace and deviations are tagged as unique events. You no longer need to search through masses of data to pinpoint faults, and can quickly step from one tagged event to the next, while still having access to the full data
Compact and rugged, this oscilloscope is ideal for industrial electrical and electro-mechanical equipment troubleshooting and maintenance applications. Features innovative functions that help technicians troubleshoot faster for quicker results and to keep their systems running smoothly. Additionally, triggering displays waveforms without having to adjust amplitude, timebase, and trigger settings.
Features
- Key measurements: Voltage and power waveforms
- Automatically capture, view and analyze complex waveforms: Fluke Connect and View™ triggering automatically displays waveforms without having to adjust amplitude, timebase and trigger settings, while Intellaset™ technology analyzes the signal and automatically displays critical numerical readings, making troubleshooting faster than ever
- View data locally on the instrument, or via Fluke Connect mobile app
- Dual-input digital oscilloscope and multimeter
- 40 MHz oscilloscope bandwidth
- Two 5000-count true-rms digital multimeters
- Connect-and-View trigger simplicity for hands-off operation
- IntellaSet technology automatically and intelligently adjusts numerical readout based on the measured signal
- Dual-input waveform and meter reading recorder for trending data over extended periods
- Recorder Event Detect captures elusive intermittent signals on repetitive waveforms up to 4 kHz
- Shielded test leads for oscilloscope, resistance and continuity measurements
- Resistance, continuity, diode and capacitance meter measurements
- Power measurements (W, VA, VAR, PF, DPF, Hz)
- Save or recall data and instrument setups
- Store instrument setups defined by a test sequence for routine maintenance or most often used test procedures
- External optically isolated USB interface to transfer, archive and analyze scope or meter data
- Optional WiFi adapter connected to internal USB port to wirelessly transfer information to the PC, laptop or Fluke Connect mobile app
- Rugged design to withstand 3 g Vibration, 30 g shock, and rated IP51 according to EN/IEC60529
- Highest safety rating in the industry: safety rated for CAT IV 600 V
Connect-and-View triggering for an instant, stable display
Oscilloscope users know how difficult triggering can be. Using the wrong settings can lead to unstable waveform captures, and sometimes the wrong measurement data. This instrument's unique Connect-andView triggering technology recognizes signal patterns and automatically sets up the correct triggering to provide a stable, reliable, and repeatable display. Connect-and-View triggering is designed to work with virtually any signal, including motor drives and control signals - without adjusting parameters, or even touching a button. Signal changes are instantly recognized and settings are automatically adjusted, providing a stable display even when measuring multiple test points in quick succession.
IntellaSet/AutoReading
The Auto Readings function with Fluke IntellaSet technology uses proprietary algorithms to intelligently analyze the measured waveform and automatically displays the most appropriate numerical measurements on the screen, so you can get the data you need easier than ever before. As an example, when the measured waveform is a line voltage signal, the Vrms and Hz readings are automatically displayed, whereas if the measured waveform is a square wave, the Vpeak-peak, and Hz readings are automatically displayed. Using IntellaSet technology in conjunction with Connect-and-View automatic triggering you can be sure you're seeing not only the correct waveform but the appropriate numerical reading as well. All without touching a button.
Industrial equipment needs a reliable power supply to operate properly, use the dual input to obtain key power measurements
For single-phase or 3-phase balanced systems, the dual inputs of the Industrial ScopeMeter 120B Series can measure AC+DC RMS voltage on channel A and AC+DC RMS current on channel B. This oscilloscope can then calculate; frequency, phase angle, active power (kW), reactive power (VA or var), power factor (PF), or displacement power factor (DPF) and can also calculate the power values for a 3-phase system where all phases have equal voltage and currents. This applies to both balanced systems and resistive loads.
One test lead to measure multiple electrical parameters
High-frequency waveform, meter, capacitance, and resistance measurements as well as continuity checks are all covered by a single set of shielded test leads. No time is wasted finding or swapping leads.
Fluke Connect mobile app compatibility
Automated industrial machinery is harder than ever to troubleshoot. It's not enough to just know where you have to test, you also have to know what to look for and that can be hard without baseline measurement data or access to subject matter experts. This Fluke Connect Assets wireless system of software and wireless test tools enables technicians to reduce maintenance costs and increase uptime with accurate equipment records and maintenance data that is easy to interpret, and share. Compare and contrast test point measurement data and trends so you can better understand signal characteristics and changes over time. And, by storing maintenance data on the Fluke Cloud you can enable team members to access it from wherever and whenever they need to so you can get advice or approvals in the field and get your systems up and running faster than ever before.
Use the comprehensive recorder modes to help find intermittent faults with ease
The toughest faults to find are those that happen only once in a while-intermittent event. They can be caused by bad connections, dust, dirt, corrosion, or simply broken wiring or connectors. Other factors, like line outages and sags or the starting and stopping of a motor, can also cause intermittent events resulting in equipment shutdowns. When these events happen, you may not be around to see them. But, your Fluke ScopeMeter Test Tool will. You can either plot the minimum and maximum peak measurement values or record the waveform trace. And, with expandable micro SD memory, recording sessions can be done for up to 14 days. This recorder is even more powerful with the addition of Recorder Event Detect, which makes detecting and logging intermittent faults easier than ever. Just set a threshold on a meter reading or scope trace and deviations are tagged as unique events. You no longer need to search through masses of data to pinpoint faults, and can quickly step from one tagged event to the next, while still having access to the full data
Precision when you need it for infrared temperature calibration
Fluke 9132 and Fluke 9133 Portable Infrared Calibrators features:
• Certify IR pyrometers from –30 °C to 500 °C (–22 °F to 932 °F)
• Large 57 mm (2.25 in) blackbody target
• RTD reference well for contact temperature measurement
• Small, compact design in a blackbody calibrator
Whether you’re using in-line or handheld infrared pyrometers, you need good calibration standards to verify their accuracy. Our portable IR calibrators provide stable blackbody targets for calibrating noncontact IR thermometers from –30 °C to 500 °C.
These blackbody calibrator units feature a temperature controlled measurement surface with a diameter of 2.25 in (57 mm). The target temperature can be controlled in set-point increments of 0.1° from –30 °C to 500 °C and a well is located directly behind the blackbody surface for contact temperature measurement.
Fluke 9132 and Fluke 9133 Portable Infrared Calibrators features:
• Certify IR pyrometers from –30 °C to 500 °C (–22 °F to 932 °F)
• Large 57 mm (2.25 in) blackbody target
• RTD reference well for contact temperature measurement
• Small, compact design in a blackbody calibrator
Whether you’re using in-line or handheld infrared pyrometers, you need good calibration standards to verify their accuracy. Our portable IR calibrators provide stable blackbody targets for calibrating noncontact IR thermometers from –30 °C to 500 °C.
These blackbody calibrator units feature a temperature controlled measurement surface with a diameter of 2.25 in (57 mm). The target temperature can be controlled in set-point increments of 0.1° from –30 °C to 500 °C and a well is located directly behind the blackbody surface for contact temperature measurement.
The three models of the new 170 Series are the new benchmark for common multimeters. All three set the standard with their combination of precision, features, ease of use, safety and reliability