10 Best Process Multimeters 2026 in the United States

The Fluke 789 ProcessMeter is a versatile tool designed for professionals who need a combination of digital multimeter (DMM) capabilities and process control features. It excels in accuracy with its ability to measure and source 4-20 mA signals, which is essential for process control applications. The resolution and range are suitable for most industrial tasks, with a current measurement range of 0 to 30 mA DC. With a 1000V overload protection on various functions and a built-in 24V loop supply, it ensures safety and robust performance in demanding environments.

The built-in, selectable 250-Ohm Hart resistor is a valuable feature for process control applications. The safety ratings are reinforced by the 440 mA 1000V fuse, which protects the device from high-voltage spikes. Additional features like the clear LCD display with backlight, auto step, auto ramp, and quick span check buttons enhance usability. The device runs on a 9-volt alkaline battery, offering around 50 hours of typical measurement use, though it has a shorter battery life of 12 hours when sourcing 12 mA.

Weighing 1.34 pounds, it is relatively lightweight and portable. The Fluke 789 is best suited for industrial professionals who need reliable and precise measurement and simulation capabilities in process control. However, it might be overkill for casual users or those who do not require advanced process control features.

The Fluke 773 Advanced Milliamp Process Clamp-Meter is designed for professionals needing precise measurements of 4-20 mA signals, typically used in PLC and control system analog I/O. One of its standout features is the ability to measure these signals without breaking the loop, which significantly reduces downtime and simplifies testing procedures.

Its compact size and detachable clamp with an extension cable make it ideal for use in tight spaces, and the built-in spotlight is a thoughtful addition for working in poorly lit conditions. The device boasts a best-in-class accuracy of 0.2%, ensuring reliable and precise readings, a crucial factor for maintaining system accuracy and performance.

Additionally, it operates on 4 AA alkaline batteries, which are included, making it ready for immediate use out of the box. The Fluke 773 is also lightweight, weighing only 0.41 kilograms, which enhances its portability. The device's high accuracy, ease of use, and practical features make it a valuable tool for professionals in the process control industry.

The Fluke 787B ProcessMeter is a versatile tool combining a digital multimeter and a loop calibrator, making it ideal for professionals working with process instrumentation. One of its key strengths is the accuracy and precision it offers, with a 1000 V and 440 mA true-RMS digital multimeter function. Additionally, its 20 mA DC current source, loop calibrator, and simulator functions are highly beneficial for calibration and simulation tasks.

The 100% larger dual display compared to its predecessor, the 787 ProcessMeter, makes readings easier to view and interpret, which is particularly helpful in various working conditions. Its design meets the 1000 volt IEC 1010 CAT III safety rating, ensuring safe operation in demanding environments. Weighing just 0.6 kilograms and powered by 4 AA batteries, the device is portable and convenient for on-site usage. However, some users might find the need for four AA batteries a bit cumbersome over time.

Additionally, while the Fluke 787B is feature-rich, it may come with a steeper learning curve for those unfamiliar with advanced multimeters or process instruments. Given its capabilities, this ProcessMeter is most suitable for engineers and technicians who require accurate measurements and reliable calibration tools in their daily tasks.