Extech EX505A-NIST Heavy Duty True RMS Multimeter

The Extech EX505A-NIST is a heavy duty True RMS digital multimeter with a NIST Calibration Certificate, combining the EX505A's rugged field performance with documented measurement traceability for use in regulated aviation maintenance and quality assurance environments. With a CAT IV-600V safety rating, IP67 waterproof housing, and 6000-count True RMS display, it meets the technical requirements of demanding MRO and flight-line diagnostics while the NIST certificate provides the calibration documentation required by FAA Part 145 repair stations, military maintenance programs, and ISO 9001 quality management systems.

Key Features

• NIST Calibration Certificate included, provides documented measurement traceability for regulated aviation maintenance and QA compliance
• CAT IV-600V safety rating for primary distribution system and service entrance measurements
• IP67-rated waterproof and dustproof housing for reliable operation in harsh aviation maintenance environments
• True RMS measurement for accurate readings on non-sinusoidal aircraft electrical waveforms
• 6000-count backlit LCD with 0.5% basic DCV accuracy
• Dual-sensitivity frequency (electric 1kHz / electronic 10MHz) and Type K temperature to 1400°F
• 2-meter drop protection and double-molded test leads for extended field service

Specifications

• DC Voltage: up to 600V
• AC Voltage: up to 600V (True RMS)
• DC/AC Current: up to 10A
• Temperature (Type K): up to 1400°F (-20°C to 760°C)
• Frequency (Electric): up to 1kHz
• Frequency (Electronic): up to 10MHz
• Display: 6000-count backlit LCD
• Basic DCV Accuracy: ±0.5%
• True RMS: Yes
• Calibration: NIST Certificate Included
• Safety Rating: CAT IV-600V
• IP Rating: IP67 (Dustproof/Waterproof)
• Drop Proof: 2m (6.5 ft)

Applications

The EX505A-NIST is the specification-grade choice for aviation maintenance organizations that require calibrated test equipment with NIST-traceable documentation for compliance with FAA airworthiness standards, military calibration requirements, or quality management audit documentation. The NIST certificate establishes the initial calibration baseline for entry into a formal calibration tracking program, making this the appropriate choice for MRO facilities where test equipment calibration records are audited. Functionally, it serves the same demanding aviation maintenance and MRO diagnostic roles as the standard EX505A, rugged, CAT IV-rated, IP67-sealed heavy duty multimeter performance with the critical addition of certified measurement documentation.

Need Your Extech EX505A-NIST Calibrated?

• PJi operates an ISO/IEC 17025 Accredited Calibration Lab and provides NIST-traceable calibration for the Extech EX505A-NIST 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.