Extech 480826 Triple Axis EMF Tester

The Extech 480826 Triple Axis EMF Tester provides reliable, multi-directional EMF measurement by combining an external sensor and internal circuitry to read electromagnetic fields along three orthogonal axes. This avoids the need to rotate or reorient the unit for obtaining accurate measurements. It displays readings in both Gauss and Tesla units over multiple selectable ranges. The meter is calibrated for fields generated by standard power frequencies (30–300 Hz), which covers typical electrical infrastructure and devices.

The unit includes a detachable sensor (with ~3 ft / 930 mm cable) so you can position the sensing element closer to the source while keeping the display and controls in hand. Its interface includes axis selection, manual ranging, data hold, and an LCD display with update intervals around 0.4 seconds. The meter runs off a 9 V battery, and is compact enough for field work. With its triple-axis capability and wide dynamic ranges, it is well-suited for environmental EMF surveys, safety inspections, and locating “hot spots” around electrical systems.

Features

• Triple-Axis Sensing — Measures EM fields in three directions (X, Y, Z) without needing to rotate the unit.
• Frequency Bandwidth — Covers 30 Hz to 300 Hz (suited for power-frequency EMF).
• Multiple Measurement Ranges — Offers ranges for Gauss and Tesla values (e.g. 200 mG, 2000 mG, 20,000 mG; 20 µT, 200 µT, 2000 µT).
• Unit Selection — Switchable units between Gauss and Tesla.
• Data Hold Function — Ability to freeze the displayed reading for review.
• Manual Range Selection — Users can select the optimal measurement range.
• External Sensor with Cable — Probe at the end of ~3 ft cable allows flexible placement.
• LCD Display with Update Rate — Reads every ~0.4 seconds.
• Portable Power — Operates on a standard 9 V battery.
• Compact Dimensions — Approx. 195 × 68 × 30 mm, lightweight for field portability.

Includes

• Sensor with 3 ft. (930 mm) cable
• 9V battery
• Hard carrying case