Yokogawa 2534 digital power meter

The Yokogawa 2534 is a precision digital power meter engineered for accurate electrical measurements across DC and AC frequencies up to 20 kHz. It delivers simultaneous sampling of voltage and current with minimal timing skew, enabling engineers and laboratories to analyze active power, reactive power, apparent power, power factor, phase angle, and integrated energy with confidence across diverse testing applications.

Technical Specifications

Measurement Range & Parameters

• Voltage (RMS): 15/30/60/150/300/600 V


• Current (RMS, direct input): 0.5/1/2/5/10/20 A


• Current (external input): 2.5/5/10 V or 50/100/200 mV options


• External shunt input: Peak voltage up to 5 V max (1 V max for lower voltage range); peak current 50 A, RMS 30 A, or 3× range (whichever is lower)


• Frequency range: DC and 10 Hz to 20 kHz; frequency measurement extends to 50 kHz


• Crest factor: 3 at rated input


• Instantaneous maximum: 2.8 kV peak or 2.0 kV RMS (voltage); 450 A peak or 300 A RMS (current) Accuracy


• Frequency measurement: ±(0.1% of reading + 1 digit)


• Power factor zero (45 Hz to 66 Hz, up to 50 kHz): ±0.25% of range


• DC current/power (0.5/1 A range): Additional ±0.2% of range


• Reference conditions: 23 ±5°C ambient, 30–75% R.H., ±5% supply voltage, sine wave input, 0 V DC common mode, filter ON (≤200 Hz) Input Impedance


• Voltage: 2 MΩ (approximately 13 pF input capacitance)


• Current (direct): 6 mΩ + 0.1 µH


• Current (external 2.5/5/10 V): 100 kΩ


• Current (external 50/100/200 mV): 20 kΩ

Key Features

• High-speed simultaneous sampling with A/D conversion minimizes measurement skew


• Integrated power measurement in watt-hours (Wh)


• Phase angle and reactive power determination


• Selectable input ranges for voltage and current measurement


• Enhanced DC measurement accuracy via precision shunt resistors

Typical Applications Power analysis in manufacturing test environments, motor efficiency validation, power supply characterization, and harmonic content analysis in industrial control systems.

Compatibility & Integration Accepts direct analog inputs and optional external shunt configurations for flexible integration into automated test benches and laboratory measurement systems.