Alpheus HT
The Alpheus High-Temperature sensor is a dynamic fiber-optic pressure sensor specifically designed for extreme environments. Compact, lightweight, and robust, it offers high sensitivity and an extended frequency response up to 100 kHz, making it ideal for high-frequency acoustic analysis in ducts or closed systems. It is fully factory-calibrated.
Main Features
Transducer type: Silicon membrane
Operating mode: Differential (front‑vented)
Frequency response: 100 Hz – 100 kHz
Natural frequency: > 100 kHz
Max dynamic pressure: 0.5 Bar (≈ 190 dB SPL)
Max static pressure: Unlimited (may affect frequency response)
Damage threshold: > 1 Bar (≈ 200 dB SPL)
Sensitivity: 0.3 mV/Pa (10 V/Bar)
Directivity: Omnidirectional
Self ‑noise: 50 dB SPL (reduced to 40 dB SPL with low‑noise conditioner)
Temperature range: -40 °C to 350 °C (420 °C short‑term peak)
EMI/RFI immunity: Complete
Sensor dimensions: 3.2 mm × 10 mm (also available at 2.5 mm)
Weight: 0.5 g
Fiber type: Multimode 50/125 OM2
Standard cable length: 2 m
Pressure media: All gases
Calibration: Sensitivity and bandwidth, factory‑performed
Examples of available off-the-shelf sensors:
Alpheus70
Alpheus100
Alpheus400
Operating temperature: -40°C to +350°C (polyimide fiber and polyimide adhesive)
Ambient operating pressure
Front-vented sensor
Typical use cases
Turbine analysis (compressor stall detection)
Non‑destructive testing (NDT)
High‑voltage measurements: overhead lines, electrical transformers
Arc or high‑frequency welding processes
Applications in ATEX (explosive or hazardous) environments
Acoustic wave studies in ducts
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