METALYZER® 3B
A total CPET solution.
Stationary CPET system for precise measurements.
The METALYZER® 3B is a stationary CPET system. Breath gases are measured Breath-by-Breath and recorded continuously. The system can be combined with ECG and other devices for performance and functional diagnostics.
Compact enough for flexible use in examination rooms, operating areas, or satellite sites. Low-maintenance and easy to use in daily practice.
Highlights
Clinical CPET without friction.
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Every breath analyzed
Breath-by-Breath measurement continuously captures O₂, CO₂, and airflow. This lets you closely follow how breathing and gas exchange develop during exercise.
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Remarkably low-maintenance
The gas-on-demand valve releases only as much gas from the calibration gas bottle as the calibration needs. One bottle lasts for 15 gas calibrations, a little over a year with monthly calibration. You replace the O₂ sensor only after 18 months. The push-pull connectors are protected against reverse polarity and damage.
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Measure in different locations
Thanks to its compact, modular design, the METALYZER® 3B can be used flexibly in different areas, from the CPET examination room and the operating room to the rehabilitation floor or a satellite site.
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Connects to existing systems
The METALYZER® 3B connects to ECG and vital-parameter systems from various manufacturers, including custo med, GE, and Spacelabs Healthcare. Measurement data is recorded, controlled, and evaluated centrally in MetaSoft® Studio.
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Stable measurement quality
Long-term stable sensor technology delivers reproducible data, in routine pulmonology as well as in high-performance sports medicine testing.
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Status at a glance
The front display shows operating status and connections directly via the LED indicators. The device's state can be read off without having to query it through the software first.
Where the METALYZER® 3B works in everyday practice.
- 01
Cardiology Medical
Attribute unclear exertional symptoms to the limiting system and document treatment success over time.
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Pulmonology Medical
Clarify whether breathing truly limits exercise and document treatment success over time.
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Sports Medicine Medical
Examine patients and healthy individuals with the same metabolic cart, from clinical workup to performance diagnostics.
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Preventive Medicine Medical
Assess cardiopulmonary exercise capacity and resting metabolic rate in healthy individuals, from baseline to follow-up over years.
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Rehabilitation Medicine Medical
Dose exercise load according to measured thresholds and document patients' progress.
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Clinical Research Medical
Measure the effect of interventions on objective endpoints and reveal the mechanism behind it.
MetaSoft® Studio
Reliably connected
An examination runs only as smoothly as the software behind it. MetaSoft® Studio controls the entire test workflow, from load protocol to connected devices to test report.
Every measurement is preserved as a raw data set and remains traceable. You focus on the examination while the technology works in the background.
Whether in the lab, in the practice, or in the field: it is the same software with the same workflow, and all results land in the same evaluation.
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In practice
A visit to the GSK Human Performance Lab
Chris Froome, Olympic medalist and four-time Tour de France winner, visited the GSK Human Performance Lab for a series of comprehensive physiological tests.
CPET Metabolic Cart
From a single device to a complete metabolic cart.
The METALYZER® 3B is the measuring unit of the CPET Metabolic Cart. On request, we deliver the complete system with ergometer, 12-channel ECG, PC, and software.
Studies with the METALYZER® 3B
The 5 latest publications from research and practice.
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2026-012
Effect of New Zealand blackcurrant extract on rest and walking-induced cardiorespiratory and metabolic responses in young adult Southeast Asian women
Willems, Mark E. T.; Wannasorn, Sorrawit; Leelitthum, Kawissara; Ajjimaporn, Amornpan; Nana, Alisa
European Journal of Applied Physiology · 2026
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2026-011
Effects of anthocyanin-rich blackcurrant extract on cardiovascular and metabolic responses during rest and treadmill running: a case study in an elite national level female Southeast Asian endurance athlete
Willems, Mark E. T.; Nana, Alisa; Hiranphan, Poomwut; Wannasorn, Sorrawit; Ramyarangsi, Papatsorn; Ajjimaporn, Amornpan
Frontiers in Sports and Active Living 8, 1818132 · 2026
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2026-009
Effects of the Paleo diet on resting metabolic rate in handball players
Pięta, Aleksandra; Mazur-Kurach, Paulina; Maciejczyk, Marcin; Frączek, Barbara
Scientific Reports · 2026
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2026-006
Exercise intensity influences variability and test-retest reliability of pulmonary gas-exchange measurements during constant work-rate cycling
Colosio, Alessandro L.; Teso, Massimo; Loi, Maura; Stuer, Lena; Boone, Jan; Pogliaghi, Silvia
Frontiers in Sports and Active Living 8, 1814527 · 2026
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2026-002
A Ramp Protocol with Increasing Incline and Additional Weight for Special Operation Forces Provides a Valid Assessment of V.O2max
Dössegger, Alain; Zberg, Leonid; Gsponer, Thomas; Faude, Oliver; Gerber, Markus; Flück, Martin et al.
Military medicine 191 (5-6), e1086-e1094 · 2026
Talk to our specialists.
Specifications
Measurement
- Measuring method
- Breath-by-Breath
- Flow (turbine)
- Reusable: ≤ 20 L/s, ± 2%Disposable: ≤ 14 L/s, ± 3% or ± 50 mL (whichever is greater)
Calibration & maintenance
- Gas sensors
- monthly, two-point
- Reusable turbine
- daily or before each test
- Disposable turbine
- factory-calibrated
- Air pressure
- every six months
- Sensor warm-up time
- 30 min
- O₂ sensor
- Replacement recommended after 18 months
Interfaces
- PC
- USB, Bluetooth® optional
- Heart rate
- Bluetooth® Smart HR strap
- SpO₂
- Nonin Bluetooth® 3150 Wrist pulse oximeter
- ECG
- 14 ECG systems, includingGE CardioSoft, Schiller, Spacelabs Healthcare
Environment
- Operating temperature
- +10 °C to +35 °C
- Humidity
- ≤ 95% relative humidity, non-condensing
- Ambient pressure
- 500–1,050 mbar
Device & operation
- Dimensions
- 240 × 210 × 90 mm
- Weight
- 940 g
- Power supply
- Power supply unit 100–240 VAC, 47–63 Hz, 0.9–0.34 AOutput 12 VDC, max. 2.5 A
Approval
- Class
- Class IIa medical device according to 93/42/EEC
- Marking
- CE marking
Subject to technical changes.
FAQ
How often does the system need to be calibrated?
The gas sensors are adjusted once a month by two-point calibration with ambient air and calibration gas, and the gas-on-demand valve doses the calibration gas automatically. You calibrate the reusable turbine daily or before each test, while disposable turbines are factory-calibrated. Air pressure calibration is only scheduled every six months. The device warm-up time is 30 minutes.
Can the device be moved between rooms?
Yes. Compact form factor, modular design. From the examination room to the operating area or a satellite site, without setup effort.
Which ECG systems are supported?
The METALYZER® 3B connects to 14 ECG systems: Amedtec ECG Pro, custo med, Dr. Schmidt Smartsoft, Ergocid Plus, Fukuda Stress ECG, GE CardioSoft, GE CASE, KB Interface Box, Medset PADSY, Micromed Elite, Mortara XScribe, Norav PC ECG, Schiller SDS-104, and Spacelabs Sentinel. It connects to the PC via USB as standard, with Bluetooth® as an option. It also supports the Bluetooth® Smart HR strap and the Nonin Bluetooth® 3150 Wrist pulse oximeter.
Can the resting metabolic rate (RMR) be measured?
Yes, the resting metabolic rate is measured via breath gas analysis with a mask. No additional hardware is needed; in MetaSoft® Studio, the energy metabolism license is required for this. Relevant for nutritional medicine, metabolic research, and therapy planning.