UEi DL379B Digital Clamp Meter | HVAC/R, Auto Ranging, NCV, Magnetic Mount

Overview

The UEi DL379B is a commercial-grade HVAC/R clamp meter designed for durability and versatility in the field. Its detachable clamp head provides flexible positioning, while auto-ranging measurements simplify diagnostics on busy job sites. Expect a robust, easy-to-read tool with a bright backlit display and practical touches that support on-the-spot testing—from panel boards to air ducts.

Key capabilities

• AC amperage, AC/DC voltage, and DC microamps (up to 2000 µA), plus capacitance and frequency ranges.
• Temperature testing with a K-type probe, plus duty cycle, diode testing, resistance, and continuity checks.
• Non-contact voltage (NCV) sensing for quick live-line identification and safer troubleshooting.

Real-world use cases

Use the DL379B to verify power presence on HVAC control wiring, monitor load currents during startup, or inspect sensor and transformer circuits without disassembly.

• Determine if a circuit is drawing the expected current or showing proper voltage at critical points.
• Evaluate circuit integrity by testing resistance, continuity, and diode function on control boards.

Design, safety, and kit

Safety is reinforced with CAT IV 300V and CAT III 600V ratings and input fuse protection. The detachable clamp head, backlit dual display, and built-in work light improve visibility in demanding environments. A magnetic mount enables hands-free operation, and the compact design aids transport and storage for field use.

The DL379B ships as a complete kit, including test leads, a K-Type temperature probe, two AAA batteries, and a zippered pouch for easy transport. UEi backs the product with dedicated technical support and a three-year limited warranty, underscoring a commitment to longevity and service.