Extech EX430A True RMS Professional Multimeter

The Extech EX430A is an 11-function True RMS autoranging digital multimeter engineered for professional technicians who need a comprehensive, single-instrument solution for electrical diagnostics and thermal measurement. Featuring a 4000-count backlit LCD with large 1-inch digits, the EX430A handles AC/DC voltage, current, resistance, capacitance, frequency, duty cycle, Type K temperature, diode test, and continuity, covering the full diagnostic toolkit required for aircraft electrical systems, MRO workbenches, and industrial maintenance. Its CAT III-1000V safety rating provides a higher level of electrical safety for demanding professional environments.

Key Features

• True RMS measurement for accurate results on variable frequency drive circuits, aircraft inverters, and non-linear electrical loads
• 11 measurement functions including capacitance and frequency, extending diagnostics to electronic component testing and avionics circuit analysis
• Type K thermocouple input measures contact temperature from -4°F to 1832°F (-20°C to 750°C)
• 4000-count backlit LCD with 1-inch digits for clear readings in all light conditions
• Autoranging with min/max recording, data hold, and relative (REL) mode
• CAT III-1000V safety rating, higher-rated than standard CAT III-600V meters
• Includes protective holster with built-in test lead storage, adjustable tilt stand, and velcro hanging strap

Specifications

• DC Voltage: up to 600V
• AC Voltage: up to 600V (True RMS)
• DC/AC Current: up to 10A
• Resistance: up to 40MΩ
• Capacitance: up to 200µF
• Frequency: up to 10MHz
• Duty Cycle: 0.1% to 99.9%
• Temperature (Type K): -4°F to 1832°F (-20°C to 750°C)
• Display: 4000-count backlit LCD (1-inch digits)
• True RMS: Yes
• Safety Rating: CAT III-1000V
• Number of Functions: 11

Applications

The EX430A serves A&P mechanics, avionics technicians, and MRO maintenance professionals who need a True RMS digital multimeter capable of handling the full breadth of aircraft electrical diagnostics, from voltage and current checks on aircraft power buses to capacitance testing of avionics components and frequency measurement on AC bus systems. The Type K thermocouple function makes it useful for thermal diagnostics of aircraft motors, connectors, and engine bay components, while the CAT III-1000V rating supports safe use on high-voltage maintenance panels and ground support electrical systems. An ideal all-in-one multimeter for professional aviation maintenance.

Need Your Extech EX430A Calibrated?

• PJi operates an ISO/IEC 17025 Accredited Calibration Lab and provides NIST-traceable calibration for the Extech EX430A at purchase.
• Documentation satisfies FAA Part 145, ISO 9001, and AS9100 requirements.
• PJi is the one-stop source: instrument and certificate in one transaction.

Why Buy from Pilot John International?

• Pilot John International is an authorized Extech distributor with an in-house ISO/IEC 17025 Accredited Calibration Lab.
• One-stop source for Extech instruments and NIST-traceable calibration in a single transaction.
• We serve aviation maintenance, FAA Part 145 repair stations, and industrial MRO facilities.
• Full-catalog availability and same-business-day shipping on in-stock items.