
Hydrosteel® 6500: Advanced Hydrogen Flux Corrosion Monitor
The world’s first multipoint hydrogen flux monitor
Hydrosteel® 6500 is the industry’s leading instrument for real-time hydrogen flux measurement and corrosion monitoring in extreme environments. Using innovative magnetic probe technology, it captures flux directly from steel surfaces, delivering rapid, reliable data to optimise maintenance and corrosion control strategies. Ideal for petrochemical, refinery, and sour gas applications, this robust device supports both spot measurements and continuous monitoring, ensuring operational safety and reduced downtime.

Hydrogen Flux Monitoring Technology
At the heart of Hydrosteel® 6500 is patented technology (GB2538113) that revolutionises corrosion monitoring. Our system uses a uniquely-designed magnetic attachment to secure a flexible metal plate directly onto steel surfaces. This ensures intimate contact without permanent modifications, allowing for the real-time capture of hydrogen gas – a direct indicator of corrosion.
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. Unlike traditional methods that rely on wall loss or corrosion coupons, our technology delivers high sensitivity and reliable data, directly from the service steel.
This innovation not only enhances measurement accuracy, but also enable multipoint continuous monitoring. Whether you need quick spot checks or ongoing corrosion surveillance across multiple locations, Hydrosteel® 6500 offers the flexibility and precision required, even for the most demanding industrial environments.
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
- Petrochemical and Refinery Process Monitoring
- Sour Gas Pipelines and Corrosion Control Systems
- Hydrogen Bakeout Verification in pre-weld scenarios
- Materials Testing and Laboratory Corrosion Studies

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 (LR) probe assembly
- Spare Large Roaming (LR) plate assembly
- Spare Small Roaming (SR) plate assembly
- Flexible sample conduits (1m, 2m, & 4m)
- Staubli® quick-fit connector
- Charging cable and dedicated charger
- User manual and warranty registration card
Technical Specification
Measurement Range | 1 – 2,000 pL/cm2/s |
Resolution | 2 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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