Level and Cryogenic Mass Measurement

• Cryogenic liquids such as liquid hydrogen (LH₂), helium (LHe) or nitrogen must be monitored under extreme conditions: very low temperatures (down to –253 °C), high pressure, and vibration
• Measurement systems must deliver continuous, high-resolution data in mobile, embedded, or industrial tanks, without drift or recalibration
• Installation constraints often require compact and removable sensors, adapted to OEM tanks and pressurized vessels
• Many applications also demand fail-safe level detection (e.g. at 90% capacity) for safety compliance
• Systems must comply with ATEX or other regulatory standards when integrated in hydrogen or volatile gas environments

FOGALE Sensors offers a proprietary capacitive measurement technology designed specifically for demanding cryogenic applications:

• Immersible probes placed inside perforated tubes in direct contact with the cryogenic liquid
• High resolution over the entire active range (±0.5% full-scale error or better), stable over time and temperature
• Immune to mechanical vibration, centering shifts, and thermal drift
• No signal leakage from cable or electronics — only the sensing zone is active
• Probes can be easily removed and reinstalled for maintenance without draining the tank
• Optional 90% level detection module as a redundant safety probe
• Electronics available in miniature, embedded or rack-mounted formats, including ATEX-compatible housings