Extech EX530A Heavy Duty True RMS Multimeter

The Extech EX530A is a heavy duty True RMS digital multimeter at the top of the Extech professional line, featuring a 50,000-count display and ±0.06% basic DCV accuracy, delivering bench-grade measurement precision in a field-ruggedized, CAT IV-600V rated package. Designed for the most demanding aviation maintenance, MRO, and industrial electrical applications, the EX530A combines IP67 waterproof and dustproof protection, 2-meter drop resistance, 20A AC/DC current capacity, LoZ input, low-pass filter, 4-20mA loop current testing, and dual-sensitivity frequency into a single instrument that outperforms most digital multimeters at any price point. For avionics calibration, precision aircraft power system analysis, and critical MRO diagnostics, the EX530A sets the standard.

Key Features

• 50,000-count display, ten times the resolution of standard 5000-count meters, enabling finer measurement discrimination
• ±0.06% basic DCV accuracy, approaches bench multimeter precision for field instruments
• True RMS for accurate measurements on aircraft inverter, VFD, and non-linear electrical loads
• CAT IV-600V safety rating with IP67 waterproof and dustproof housing for the most demanding field environments
• 4-20mA loop current measurement function for process control and avionics analog signal testing
• LoZ input eliminates ghost voltage on de-energized circuits; low-pass filter for VFD and inverter diagnostics
• 1000V input protection for safety on high-voltage circuits
• 20A AC/DC current capacity for high-current aircraft electrical systems and ground power equipment
• 2-meter drop protection and double-molded test leads for extended service in demanding maintenance environments

Specifications

• DC Voltage: up to 600V
• AC Voltage: up to 600V (True RMS)
• DC/AC Current: up to 20A
• Capacitance: measured
• Frequency (Electric/Electronic): dual sensitivity
• Temperature (Type K): measured
• 4-20mA Loop Current: Yes
• Duty Cycle: 0.1% to 99.9%
• Display: 50,000-count backlit LCD
• Basic DCV Accuracy: ±0.06%
• True RMS: Yes
• LoZ Function: Yes
• Low-Pass Filter: Yes
• Input Protection: 1000V
• Safety Rating: CAT IV-600V
• IP Rating: IP67 (Dustproof/Waterproof)
• Drop Proof: 2m (6.5 ft)

Applications

The EX530A is selected by avionics calibration labs, high-precision MRO facilities, and senior aviation maintenance technicians who need the most accurate, most capable handheld digital multimeter available. Its 50,000-count resolution and 0.06% DCV accuracy make it suitable for avionics bench calibration, aircraft voltage standard verification, and precision power quality analysis on aircraft electrical buses. The 4-20mA loop current function supports analog signal testing in avionics and aircraft systems that use process-control-style analog interfaces, while the full suite of CAT IV-600V, IP67, and drop-proof features ensures it performs reliably in the field, on the flight line, and in the MRO shop.

Need Your Extech EX530A Calibrated?

• PJi operates an ISO/IEC 17025 Accredited Calibration Lab and provides NIST-traceable calibration for the Extech EX530A 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.