Yokogawa 2553A Small and Light Precision DC Calibrator

The Yokogawa 2553A is a compact precision DC calibrator engineered for high-accuracy calibration of DC voltage, DC current, and resistance across multiple ranges. It simulates thermoelectromotive force and resistance for temperature sensor validation, supporting 10 IEC-regulated thermocouple types, Pt100 RTDs, and user-defined calibration through temperature-voltage or temperature-resistance extrapolation. The instrument delivers 5.5-digit resolution (±120,000 count) with intuitive operation via dedicated dials, switches, and seven-segment LED display.

Technical Specifications

• Ranges: ±10 mV, ±100 mV, ±1 V, ±10 V, ±30 V


• Accuracy: ±75 ppm (1 year)


• Stability: ±15 ppm/h at 23±1°C


• Noise: 2 µV rms DC Current Output


• Ranges: ±1 mA, ±10 mA, ±30 mA, ±100 mA


• Accuracy: ±120 ppm (1 year)


• Maximum output voltage: 30 V Resistance Generation


• Range: 400 Ω Temperature Calibration


• Thermocouple types: 10 IEC-regulated (K, T, E, J included)


• RTD: Pt100 with user-defined calibration


• Reference junction compensation: Internal, external (Pt100), and manual modes Resolution & Warm-up


• Output resolution: 5.5 digits (±120,000 count)


• Warm-up time: Approximately 30 minutes Operating Environment


• Temperature range: 5°C to 40°C


• Accuracy valid at: 23±5°C


• Power consumption: Maximum 30 VA


• Power supply frequency: 48 to 63 Hz


• Withstand voltage: 1500 VAC (1 minute, power to case)

Key Features

• Compact form factor: 213 × 132 × 300 mm, 3 kg


• USB 2.0 (High Speed/Full Speed) with mass storage drag-and-drop file transfer


• Ethernet connectivity: IEEE 802.3, 100 BASE-TX/10 BASE-T, 100 Mbps maximum


• Optional GP-IB interface (IEEE 488-1978, backward compatible with 2553)


• Low noise output suitable for precision metrology

Typical Applications

• Calibration of digital multimeters and precision voltmeters


• Thermocouple and RTD sensor validation


• Current measurement equipment verification


• Temperature transmitter calibration


• Test laboratory and field service operations

Compatibility & Integration USB and Ethernet interfaces enable integration into automated test systems. GP-IB option (optional) provides legacy instrument control compatibility. Internal memory supports file transfer via USB mass storage mode, facilitating offline configuration and data logging workflows.