ALDAS-Mini : ELECTROLYSIS CELL ANALYZER

The ALDAS-Mini (Electrolysis Cell Analyzer) is a compact, high-performance solution designed to accelerate R&D in electrolysis cell technology. Engineered for precision, it enables advanced analysis of electrolysis cells, playing a pivotal role in the global transition to sustainable, hydrogen-based energy systems.
Electrolysis cells are essential for generating clean hydrogen, a critical component in achieving carbon neutrality. The ALDAS-Mini empowers researchers and engineers to optimize operational parameters, reduce costs, and improve efficiency by delivering insights into cell performance under operating conditions. This system supports the pursuit of cleaner energy solutions and a sustainable future.

Product Video

This video will introduce the methods for connecting this system to the measurement target, the configuration procedures, and some measurement examples.

Key Features

Innovative impedance measurement: max. 500 A electrolysis current
Ease of integration: requiring no modifications to existing systems
Simultaneous multi-cell measurement: up to 8 cells in a stack
High-precision measurements in noisy environments: consistent and reliable results
Wide compatibility: supports electrolysis cell types including PEM, SOEC, AEM, AWE, etc.

Model No. (Order Code)

EA5301-01	SENSE module 1ch
EA5301-02	SENSE module 2ch
EA5301-03	SENSE module 3ch
EA5301-04	SENSE module 4ch
EA5301-05	SENSE module 5ch
EA5301-06	SENSE module 6ch
EA5301-07	SENSE module 7ch
EA5301-08	SENSE module 8ch
EA5501	SOURCE module
EA5701	PC application software

A separately sold current sensor and connection cable are required for measurements. Please purchase the optional current sensor and connection cable separately.

Accelerate electrolysis cell development via high-current operational testing

Revolutionizing EIS measurement: Solutions for electrolysis cells and stacks with the ALDAS-Mini

EIS (Electrochemical Impedance Spectroscopy) measurement of electrolysis cells used to face challenges in measuring large cells or cell stacks with high currents. The ALDAS-Mini addresses this issue by enabling EIS measurement for a wide range of cell sizes, from small cells with electrolysis currents of a few amperes to large cells with currents of up to 500 A (*1).

Additionally, the system can measure up to 8 cells simultaneously within a cell stack, allowing for comparative analysis of the state of each cell during electrolysis.

Main Applications
• Evaluation of large cells exceeding 100 cm²
• Optimization of hydrogen production
• Monitoring cell health and diagnosing degradation factors
• Material research

*1:If your electrolysis current measurement requirements exceed 500 A, please contact your Hioki representative.

Just simply connect to your existing system

Designed for seamless setup, requiring no modifications to existing systems

No modification to your electrolysis system is needed to set up the ALDAS-Mini.
Unlike conventional booster-equipped FRA (Frequency Response Analyzer) devices, the ALDAS-Mini operates seamlessly alongside the cells' DC power supplies.

STEP 1: Applied current connection
Connect the SOURCE module to the cell’s power source terminal with the SOURCE Cable.
The SOURCE module applies AC current for measurement.

STEP 2: Measurement line connection
Attach the current sensor to measure the current. Then, connect the SENSE cable to the cell to measure the voltage (both connected to the SENSE module).

STEP 3: Start measurement
Start the measurement after configuring the necessary settings in the dedicated PC software.
The I-V curve and Nyquist plot are displayed simultaneously in real-time, with impedance calculated from the measured current and voltage.

Basic specification

Accuracy guaranteed: 1 year

Measurement target	Electrolysis cell, cell stack
Measurement parameters	Impedance (R,X,θ,Z), voltage (V), current (I)
Measurement modes	Logging mode, Nyquist plot mode, Bode plot mode
Max. input voltage	30 V
Max. measurable current	20 A to 500 A (the necessary current sensor will change according to the rated current) If your measurement requirements exceed 500 A, please contact your Hioki representative.
Max. measured signal level	20 Ap-p (at 10 V)
Measurement frequency	0.01 Hz to 10 kHz
Number of input channels	Up to 8 channels
Dimensions and weight	SENSE Module EA5301 (with 8 channels): approx. 430W × 221H × 361D mm (16.9W × 8.7H × 14.2D in.) (excluding protruding parts), approx. 12.7 kg (28.0 lbs) SOURCE module EA5501: approx. 520W × 197H × 540D mm (20.5W × 7.8H × 21.3D in.) (excluding protruding parts), approx. 27.0 kg (59.5 lbs) (not including cables)
Power supply	100 V to 240 V AC, 50 Hz/60 Hz, 500 VA
PC requirements	OS: Windows 11 Interface: wired LAN