Brüel & Kjær has launched its high temperature industrial accelerometer, the Type 8347-C, which is said to facilitate vibration measurements under adverse environment conditions typical of aircraft applications and nuclear power plants.
8347-C Accelerometer
The Type 8347-C is a piezoelectric charge accelerometer capable of enduring temperatures varying between -321°F (-196°C) and +900°F (+482°C). The thermal stability is attributed to its shear design. These factors coupled with the device’s high radiation resistance make it ideal for vibration measurement in harsh conditions. Owing to a height measuring only 20 mm, the accelerometer could be employed for testing in cramped spaces characteristic of applications such as aircraft engines, gas turbines, health and usage monitoring systems and turbo pumps. INCONEL alloy has been used as the housing material for the accelerometer. The structure is made robust by hermetically sealing the housing. The measurement accuracy is maintained by individual calibration of each and every 8347-C transducer by employing 1600-line Fast Fourier Transformation (FFT) and random excitation.
Brüel & Kjær, a subsidiary of Spectris plc, is a maker of vibration and sound measurement systems. Some of the instrumentation products in its repertoire apart from accelerometers include noise and vibration analyzers, microphones, sound level meters, calibrators and conditioning amplifiers. The company caters to diverse industry segments such as automotive, aerospace, defense, transportation, telecom, urban environment, airport environment and audio.