General Purpose, 30 kHz Resonant Frequency Acoustic Emission Sensor Description and Features Operating Specifications The R3α sensor cavity is machined from a solid stainless steel rod, making the sensor extremely rugged and reliable. The ceramic face electrically isolates the sensor from the structure to assure a low noise operation. Most low frequency AE sensors are relatively large. However, the R3α sensor has the same compact size as our other Alpha series sensors and boasts a low frequency, 30 kHz resonant response. This feature makes it extremely useful in tight areas that require a low frequency sensor for testing. The Alpha series family of sensors features SMA connectors versus the Microdot connectors found on PAC’s RXX series of passive sensors. The Alpha series includes R3α, R6α, R15α, R30α R50α, R80α and WSα sensors. Completely enclosed crystal for RFI/EMI immunity This sensor is normally selected for structural health monitoring of small to medium concrete and geologic structures and for concrete and metal pipeline leak detection applications where there needs to be high acoustic background noise rejection and distances between sensors can be relatively close (tens of feet). Sensor to Preamp Cable Due to continuing improvement, MISTRAS Group, Inc. reserves the right to amend specifications without notice. Copyright © 2010 MISTRAS Group Inc. All Rights Reserved. Email: [email protected] www.mistrasgroup.com Sensors include NIST Calibration Certificate & Warranty 195 Clarksville Road, Princeton Junction, NJ 08550 Products & Systems Division Frequency response of the R3α. Calibration based on ASTM E1106; Calibration based on ASTM E976.