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
DC Voltage Output
• 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.
