Fluke 789 ProcessMeter Ohmmeter with DMM, 4‑20 mA Source, 24 V Loop

Description

Product Overview

The Fluke 789 ProcessMeter is engineered to deliver comprehensive measurement capabilities in a single, rugged handheld device. Combining a full‑featured digital multimeter with dedicated current sourcing, it supports voltage, resistance, frequency, and continuity testing while also providing 4‑20 mA source and a built‑in 24 V loop supply. The instrument features a high‑resolution LCD with backlight, enabling clear readouts in low‑light conditions. Its robust construction includes a 9.02 × 15.2 × 2.99 inch chassis and a 1.34 pound weight, making it portable yet durable for field use. Overload protection is built into the voltage, ohms, and frequency ranges (1000 V) and the current range (150 V), backed by a 440 mA, 1000 V fuse for added safety. Powered by four AA batteries (included) or a 9‑volt alkaline battery, the device delivers up to 50 hours of typical measurement operation and 12 hours when sourcing 12 mA, ensuring long‑lasting performance on a single charge.

Usage

Designed for industrial and scientific environments, the Fluke 789 ProcessMeter excels in applications such as process control, automation, and equipment maintenance. Electricians and technicians can use it to verify loop currents, troubleshoot sensor outputs, and calibrate instrumentation that relies on 4‑20 mA signals. Its built‑in 24 V loop supply simplifies testing of low‑voltage circuits without the need for external power sources. The device is also suitable for HVAC professionals, manufacturing engineers, and laboratory staff who require precise voltage and resistance measurements alongside current simulation capabilities. Its ergonomic design and clear display make it comfortable for extended use on the shop floor, in control rooms, or in field service scenarios where reliability and accuracy are paramount.

Why Choose Us

Choosing the Fluke 789 ProcessMeter means investing in a tool backed by Fluke’s reputation for quality and accuracy. The instrument undergoes rigorous testing to meet international standards, ensuring consistent performance across a wide temperature range and harsh environments. Fluke provides comprehensive customer support, including calibration services, warranty coverage, and access to technical resources. The device’s modular design allows for easy maintenance and future upgrades, extending its service life. Additionally, Fluke’s global network of service centers ensures rapid assistance and parts availability, minimizing downtime for critical operations. By selecting this ProcessMeter, users benefit from a trusted brand, robust construction, and a feature set that addresses the most demanding measurement and sourcing tasks in modern industrial settings.

Key Features

• Integrated DMM functions with high‑resolution LCD for clear, accurate readings
• 4‑20 mA current source and built‑in 24 V loop supply simplify loop testing
• 1000 V overload protection on voltage, resistance, and frequency ensures safety
• Long battery life provides up to 50 hours of measurement or 12 hours of sourcing
• Comprehensive after‑sales support, calibration services, and warranty from Fluke

FAQ

What batteries does the Fluke 789 use and how long do they last?

The instrument uses four AA batteries (included) for standard operation and a 9‑volt alkaline battery for extended use. Typical measurement use provides up to 50 hours, while sourcing 12 mA current lasts about 12 hours on a single battery.

Can the Fluke 789 measure both AC and DC signals?

Yes, the ProcessMeter can measure AC and DC voltage, resistance, and frequency, offering versatile testing capabilities for a wide range of electrical applications.

Is the 24 V loop supply adjustable?

The built‑in 24 V loop supply is fixed at 24 V, providing a reliable power source for loop testing without the need for external adapters.

What is the accuracy of the current source?

The 4‑20 mA source delivers current with high accuracy suitable for process control and instrumentation calibration, meeting Fluke’s stringent performance standards.

Does the device include any warranty or service options?

Fluke offers a standard limited warranty and optional extended service plans, including calibration and repair services through its global support network.