Skip to main content Skip to search Skip to main navigation
Menu

ALDAS High-Speed EIS System for Real-Time Impedance Analysis

Description

Product information ALDAS High-Speed EIS System for Real-Time Impedance Analysis

The ALDAS-α is a high-performance electrochemical impedance spectroscopy (EIS) system designed for analyzing fuel cells and water electrolysis. While conventional current-voltage (I-V) measurements are widely used to evaluate overall cell performance, they are limited in identifying the underlying causes of performance changes or degradation. 

Using EIS, the ALDAS-α enables a deeper analysis by quantitatively evaluating and separating complex electrochemical phenomena within the cell. This provides a more detailed understanding of internal processes. 

Thanks to its high-precision current sensing technology, the system delivers stable and accurate impedance data from very low frequencies, ensuring reliable and easy-to-interpret results. 

A key benefit of the ALDAS-α system is its fast measurement speed, completing scans in less than 8 minutes [OW2.1]- significantly reducing test time compared to conventional systems. With support for simultaneous multi-channel measurements up to 8 cells and up to 20 A DC output, the ALDAS-α system reduces development time considerably. 

The ALDAS-α is the ideal choice for high-speed, multi-channel EIS measurements in R&D environments where precision and efficiency matter most. It is one of HIOKI’s EIS measurement solutions, alongside the compact ALDAS-Mini and the high-power ALDAS-E.

Technical Specifications 

  • Electrochemical impedance spectroscopy (EIS) measurement system 
  • Frequency range: high to low frequency sweep (e.g. 10 kHz to 0.01 Hz) 
  • Measurement speed: approx. 7.6 minutes (multi-channel, fast mode) 
  • Multi-channel capability: up to 8 cells simultaneously 
  • DC output: up to 20 A without external booster

Skip product gallery

Related Products

ALDAS-E – EIS Measurement System for kW to MW-Class Electrolysis and Fuel Cell Stacks ALDAS-E – EIS Measurement System for kW to MW-Class Electrolysis and Fuel Cell Stacks
ALDAS-E
ALDAS-E – EIS Measurement System for kW to MW-Class Electrolysis and Fuel Cell Stacks
The ALDAS-E is a high-performance electrochemical impedance spectroscopy (EIS) system designed for in-operation analysis of large-scale electrolysis and fuel cell stacks. It enables precise impedance measurement under real operating conditions, enabling engineers to evaluate performance, identify losses, and monitor degradation in kW to MW-class-fuel cell and electrolysis systems. A key strength of the system is its ability to handle very high currents. By combining multiple current sensors, ALDAS-E supports measurements up to 10 kA, while still detecting small AC signals within noisy DC environments, which is critical for realistic stack evaluation. The ALDAS-E system offers scalable multi-channel measurement up to 48 channels, enabling simultaneous observation of both total stack behavior and individual cell performance. This makes it ideal for detailed stack diagnostics, comparative analysis, and electrolysis and fuel cell stack optimization. Despite the complexity of large-scale systems, ALDAS-E is designed for easy integration, connecting to existing setups without requiring dedicated power supplies or system modifications. The fast EIS measurement below 8 minutes and its high stability down to low frequencies, ALDAS-E significantly reduces evaluation time while maintaining high accuracy.ALDAS-E represents the high-end solution for applications that go beyond the scope of the high-speed ALDAS-α and the compact ALDAS-Mini. Technical SpecificationsMeasurement targets: electrolysis cells, fuel cells, and full stacksFrequency range: 10 mHz to 100 kHz Measurement current: up to 10 kA (with combined sensors) Multi-channel capability: 1 to 48 channels Measurement voltage: 1.5 V to 1000 V

ALDAS-Mini – Compact EIS Analyzer for Electrolysis Cell Development  ALDAS-Mini – Compact EIS Analyzer for Electrolysis Cell Development
ALDAS-Mini
ALDAS-Mini – Compact EIS Analyzer for Electrolysis Cell Development
The ALDAS-Mini is a compact, high-performance electrolysis cell analyzer designed to accelerate R&D in hydrogen production technologies. Using advanced electrochemical impedance spectroscopy (EIS), it provides deep insights into the internal behavior of electrolysis cells, enabling engineers to optimize efficiency, reduce energy losses, and improve the performance of electrolysis cells and stacks. The cell analyzer [OW1.1]can be integrated into existing test setups without modifications to the existing electrolysis system, making it ideal for flexible usage in both laboratory and industrial environments. ALDAS-Mini supports a wide range of electrolysis technologies - including PEM, SOEC, AEM, and alkaline systems, which ensures compatibility across different development platforms. A key differentiator is its ability to perform impedance measurements under real high-current operating conditions, handling electrolysis currents from a few amperes up to 2000 A. Combined with simultaneous multi-cell measurement up to 8 cells, ALDAS-Mini enables efficient comparative analysis within cell stacks, significantly improving testing throughput and enabling faster identification of performance differences and degradation effects. With high noise immunity and precise current sensing, the ALDAS-Mini delivers stable and reliable measurement results - even in demanding environments. This makes it - making it a powerful tool for advancing next-generation hydrogen technologies. The ALDAS-Mini complements the ALDAS lineup as a compact solution alongside the high-speed ALDAS-α and the high-power ALDAS-E. Technical Specifications Electrochemical impedance spectroscopy (EIS) for electrolysis cells Electrolysis current range: up to 2000 AMulti-channel measurement: up to 8 cells simultaneously Compatible with PEM, SOEC, AEM, AWE technologies High noise immunity for stable measurements

HIOKI CT6830 current probe ultra compact CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
CT6830
CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 2 A, ME15W connector

Regular price: €1,628.00
CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
CT6831
CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
Ultra small zero flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 20 A, ME15W connector

Regular price: €1,628.00
HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
CT6841A
HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
AC/DC current clamp using advanced fluxgate technology, 20A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 2 MHz, maximum conductor diameter 20 mm, cable length 3 m

Regular price: €1,948.00
CT6872 - AC/DC Current Sensor, 50 A / 10 MHz CT6872 - AC/DC Current Sensor, 50 A / 10 MHz
CT6872
CT6872 - AC/DC Current Sensor, 50 A / 10 MHz
The CT6872 is a high-precision AC/DC current sensor designed for detailed waveform observation and harmonic analysis. With a frequency range of up to 10 MHz, it is ideal for high-frequency power electronics testing. It supports automatic phase shift correction (APSC). Technical Details: Current Rating: 50 A AC/DC Frequency Range: DC to 10 MHz Accuracy: ±0.03% rdg, ±0.002% f.s. Maximum Conductor Diameter: 24 mm Operating Temperature: -40°C to 85°C Input Impedance Requirement: 1 MΩ or higherMore than specs – find more details here: Measure Power with Precision – Across All Applications

Regular price: €1,788.00