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R3 ? Sensor

R3 ? Sensor
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R3 ? Sensor

Product catalog summary
Description and Features
The R3α sensor is a robust and reliable acoustic emission sensor, crafted from a solid stainless steel rod. It features a ceramic face for electrical isolation, ensuring low noise operation. Despite its compact size, it offers a low frequency, 30 kHz resonant response, making it ideal for use in confined spaces requiring low frequency testing. The sensor is part of the Alpha series, which uses SMA connectors, unlike the Microdot connectors of the RXX series.
Application
This sensor is typically used for structural health monitoring of small to medium concrete and geologic structures, as well as for leak detection in concrete and metal pipelines. It is effective in environments with high acoustic background noise and where sensors are placed relatively close together.
Operating Specifications
  • Dynamic: Peak Sensitivity: 80 [-63] dB; Operating Frequency Range: 25 - 70 kHz; Resonant Frequency: 29 [140] kHz; Directionality: ±1.5 dB.
  • Environmental: Temperature Range: -65 to 175ºC; Shock Limit: 500 g; RFI/EMI immunity due to enclosed crystal.
  • Physical: Dimensions: 0.75” dia. x 0.88” h (19 x 22.4 mm); Weight: 41 grams; Case Material: Stainless Steel; Face Material: Ceramic; Connector: SMA; Seal: Epoxy.
Ordering Information and Accessories
The R3α sensor can be ordered with a magnetic hold-down (MHR15A) and preamplifiers (0/2/4, 2/4/6). It includes a NIST Calibration Certificate and Warranty. Calibration is based on ASTM E1106 and ASTM E976 standards.
Additional Information
MISTRAS Group, Inc. reserves the right to amend specifications without notice. The company is ISO 9001 certified, ensuring quality management standards.
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Catalog excerpts

R3 ? Sensor-1

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.

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