Electrolyser Test Equipment - ALDAS-α

  • High-speed EIS measurement
  • Easy connection to existing EC/FC evaluation equipment, reducing wiring complexity and preparation time
  • Source Module applies up to 20.00 A DC — no additional booster power supply required for high current-density evaluations
  • Non-contact current sensor method eliminates temperature drift associated with shunt resistors, enabling high-accuracy measurements at low frequencies below 1 Hz
  • Supports Nyquist plot, Bode plot, and logging plot display modes

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The HIOKI ALDAS-α (Active Line Device Analysis System) is a high-speed, high-precision Electrochemical Impedance Spectroscopy (EIS) measurement system designed for R&D evaluation of electrolysis cells, fuel cells, and cell stacks. The system measures impedance (R, X, θ, Z), voltage, and current across a frequency range of 10 mHz to 100 kHz, achieving a minimum measurement time of 7.6 minutes under specified fast-mode conditions (10 kHz to 0.01 Hz, 30 points). The Source Module applies up to 20.00 A DC output current, enabling high current-density evaluations without an additional booster power supply. A non-contact current sensor method is used in place of shunt resistors, eliminating temperature drift and ensuring stable, high-accuracy measurements down to low frequencies below 1 Hz. The system supports 1 to 8 input channels depending on configuration and can be connected to existing EC/FC evaluation equipment.

Use Cases

  • Electrolysis cell evaluation
  • Fuel cell evaluation
  • Cell stack impedance evaluation
  • Accelerating R&D of electrolysis cells and fuel cells

Capabilities

  • Performs EIS measurements over a frequency range of 10 mHz to 100 kHz
  • Measures impedance parameters (R, X, θ, Z), voltage, and current simultaneously
  • Supports 1 to 8 input channels depending on Sense Module configuration
  • Operates in constant-current (CC) load mode
  • Source Module delivers output current from ±10 mA to 20.00 A (resolution: 0.01 A), enabling high current-density cell evaluations with a single unit
  • Measurement current range of 400 µA to 50 A achievable depending on the current sensor used
  • Compatible with electrolysis cells, fuel cells, and multi-cell stacks
  • Non-contact current sensor method provides stable, high-accuracy measurements at low frequencies below 1 Hz
HIOKI E.E. CORPORATION Hioki Corporation supplies advanced electrical measurement solutions tailored for hydrogen energy R&D, including fuel cells and water electrolysis systems. Their precision testing instruments are engineered to evaluate and optimize hydrogen production efficiency, ensuring safety and performance in the emerging green energy supply chain.

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