
Hydrosteel® 6500: Advanced Hydrogen Flux Corrosion Monitor
The world’s first multipoint hydrogen flux monitor
Hydrosteel® 6500 is the world’s leading instrument for real-time hydrogen flux measurement from steel. It is widely used in the control of acid corrosion, hydrogen damage risk, and hydrogen in steel research. Incorporating robust magnetic probes to capture hydrogen flux directly from steel surfaces, it is well adapted to delivering reliable data in diverse petrochemical and other industrial environments. in support of plant equipment integrity, operational safety and process optimisation.


Hydrogen Flux Monitoring Technology
At the heart of Hydrosteel<sup® 6500 is a purpose-designed flux-capturing probe that magnetically engages a flexible metal plate against the steel surface. This ensures consistent, intimate contact with the test material, enabling the reliable capture of hydrogen flux as it emerges from the steel.
Hydrosteel® 6500: Operation and Advantages
By drawing ambient air between the plate and the steel, the system collects hydrogen emanating from the metal. This captured gas is then analysed by a highly-accurate sensor, providing immediate measurements of hydrogen flux. The measurement process is completely non-intrusive and requires no modification to the asset under test, allowing hydrogen behaviour to be monitored under normal operating conditions.
This direct measurement approach provides clear, actionable data across a range of industrial scenarios, including corrosion processes, thermal treatments, hydrogen damage risk assessment, and research into hydrogen–steel interactions. The technology is equally suited to short-term investigations and long-term monitoring programmes, supporting informed decision-making for asset integrity, operational safety, and process optimisation.
Key Features
- Real-Time Measurement – Immediate detection of hydrogen flux for early corrosion warning.
- Dual Operation Modes – Supports both spot measurements and fixed probe monitoring.
- High Sensitivity Probes – Comes with both Large Roaming (LR) and Small Roaming (SR) probe options.
- Robust Data Logging – Programmable logging cycles
- User-Friendly Interface – Large backlit display with intuitive controls and USB data transfer
- Rugged Design – IP54 rating and robust design for harsh environments.
- Certifications – ATEX certified and Intrinsically Safe for harsh environments.
Typical Industries & Applications
- Upstream and refinery process optimisation
- Sour gas and high temperature corrosion control systems
- Hydrogen outgas verification in pre-weld scenarios
- Steel testing and corrosion research
2 Year Extended Warranty Available
Step 1) Purchase an ION Science Hydrosteel® 6500
Step 2) Register your instrument here within one month of purchase
Step 3) Receive a 2 year extended warranty confirmation!

What’s Included?
- Hydrosteel®6500 instrument
- Leather carrying case and harness
- Large Roaming (LR) probe assembly
- Small Roaming (SR) probe assembly
- Spare Large Roaming (LR) plate assembly
- Spare Small Roaming (SR) plate assembly
- Flexible sample conduits (1m, 2m, & 4m)
- Staubli® quick-fit connector
- Mains charger
- 2mm Allen key
- 8mm and 11mm spanners
- User manual and warranty registration card
Technical Specification
| Measurement Range | 1 – 20,000 pL/cm2/s |
| Resolution | 1 pL/cm2/s or ±10% accuracy (whichever is greater) |
| Dimensions | 320 x 185 x 90 mm |
| Weight | 4.1 kg (without leather case) |
| Operating Temperature | -20ºC to + 60ºC; probes tolerate up to 350ºC |
| Battery Life | Up to 70 hours of continuous operation |
| Certifications |
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| Data Interface | USB 2.0 with .csv export capabilities |
| Warranty | 1 year (standard) 2 years when registered on the ION Science website |
Video Library
Downloads
For supporting resources for Hydrosteel® 6500, please see below.
Hydrosteel® 6500 Accessories and Replacement Parts
There are a number of accessories and replacement parts available for the Hydrosteel® 6500, which can be found below. Please contact us if you would like more information or to place an order.
Staubli® Adaptor (modified)
Part Number: 6500258
Hydrosteel® 6500 Leather Case
Part Number: 6500266
Large Probe Assembly
Part Number: A-6500256
Handle – Probe
Part Number: 6500251
Collector Plate Assembly – Large
Part Number: A-6500261
Hydrosteel® 6500 Conduit 1m
Part Number: A-6500267
Hydrosteel® 6500 Conduit 2m
Part Number: A-6500268
Hydrosteel® 6500 Conduit 4m
Part Number: A-6500269
FAQs
If you have any questions related to Hydrosteel® 6500, please view our frequently asked questions.
Hydrosteel® 6500 Enquiry Form
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