Fluke 709H Precision HART Loop Calibrator

Fluke 709H Precision HART Loop Calibrator delivers fast, accurate loop calibration and HART diagnostics for technicians servicing smart transmitters in industrial environments. Designed to reduce troubleshooting time, it combines precision mA calibration with built-in HART communication in a compact handheld tool.

Built for ease of use, the 709H allows technicians to read device information, perform diagnostics, trim outputs, and log HART data without needing a separate communicator or laptop—making it ideal for maintenance, commissioning, and loop tuning tasks.

Key Features

• HART communication capability: Supports universal and common practice HART commands

• Precision accuracy: Delivers best-in-class 0.01% reading accuracy

• Data logging functionality: Records mA and HART data with selectable intervals from 1 to 60 seconds

• Built-in 250 Ω resistor: Enables reliable HART communication

• Quick-Set rotary knob: Simplifies setup and operation

• Large backlit display: Improves readability in low-light work areas

Benefits

• Reduces troubleshooting time: Combines loop calibration and HART diagnostics in one tool

• Improves maintenance efficiency: Eliminates the need for separate HART communicators

• Enhances documentation: Uploads logged data and configurations using optional 709H/TRACK software

• Supports field work: Compact, rugged design with simple two-wire connections

• Increases technician accessibility: Makes HART device servicing easier for more users