High Temperature Accelerometer Sensor 681C02

681C02 Extreme High Temperature Accelerometer (PCB Equivalent)

The 681C02 series is an industrial-grade, single-axis high temperature accelerometer engineered to execute precise dynamic vibration and shock measurements within severely hostile thermal environments. Utilizing a specialized unamplified piezoelectric charge output configuration, this transducer provides an exceptional operating temperature envelope from -50°C up to 500°C without risking sensor depolarization or signal degradation. Optimized for high-stress structural testing, the 681C02 delivers a wide ±1000 g measurement range and a high resonant frequency $\ge 30\text{ kHz}$, serving as a direct, seamless drop-in performance equivalent to premium legacy PCB models.

Key Features

• • High-Temperature Piezoelectric Charge Technology: Built with specialized, ultra-stable crystals without an internal charge-amplifier circuit, enabling continuous and reliable operation in extreme environments ranging from -50°C up to 500°C.

  • Broad Frequency Response and Linear Dynamics: Delivers excellent linearity across a measurement range of ±1000 g, capturing high-frequency structural responses up to 6 kHz while maintaining a high mounted resonant frequency of ≥30 kHz to avoid phase-shift errors.

  • Ruggedized Titanium and Stainless Steel Enclosure: Manufactured with an advanced Titanium / Stainless Steel alloy housing that provides exceptional stiffness, high corrosion resistance, and optimized structural rigidity to protect against mechanical fatigue.

  • Industrial 10-32 Top Connection: Equipped with a heavy-duty, hermetically sealed 10-32 top-exit coaxial connector to maintain high insulation resistance and ensure clean, low-noise signal transmission under harsh operating conditions.

 

Parameter	Specification / Value	Note / Condition
Sensor Type	Piezoelectric Charge Output	Requires external charge amplifier or in-line charge converter
Core Target Keyword	High temperature accelerometer	Suitable for gas turbine, exhaust, and nuclear testing
Sensitivity	5 pC/g	Room temperature calibration baseline
Measurement Range	±1000 g	Peak dynamic limit for extreme shock and vibration
Frequency Range (±5%)	10 to 4,000 Hz	Flat frequency response bandwidth
Frequency Range (±10%)	1 to 6,000 Hz	Extended linear operation zone
Resonant Frequency	≥30 kHz	Mounted natural resonant frequency
Operating Temperature	-50°C to 500°C	Extreme thermal rating, charge mode dependent
Housing Material	Titanium / Stainless Steel	Hermetically sealed, high-durability alloy construction
Connector Type	10-32 Top Connector	Coaxial threaded top-exit interface
Cross Reference	PCB Model Replacement	Direct drop-in equivalent performance