R15-Alpha0 pages
R15α Sensor
General Purpose, 150 kHz Resonant
Frequency Acoustic Emission Sensor
Description and Features
Operating Specifications
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. The major improvements
in Alpha series over the RXX series include:
•tUse of the more popular SMA type of connector.
•tCavity is machined from a solid stainless steel rod makt ing for a simpler and more robust design.
•tDramatically increased thickness of the ceramic shoe for
t better mechanical stability.
•tDistance from the bottom of the ceramic shoe to the
t bottom edge of sensor cavity increased for better
t insulation resistance and ground avoidance.
•tIntroduced a 30-degree angle at the bottom edge of the
t sensor cavity.
t Dynamict
All these improvements make the Alpha series sensors more
robust, reliable and greatly reduce the possible grounding of
the cavity to the structure caused by wet environment.
Dimensions. ...0.75” diam. x 0.88” h (19 x 22.4 mm)
.
Weight. ...........................................34 grams
.
Case Material. ............................ Stainless Steel
.
Face Material. ....................................Ceramic
.
Connector. ............................................. SMA
.
Connector Locations..................................Side
Seal................................................... Epoxy
Sensor to Preamp Cable
Applications
This general purpose sensor provides a good combination of
high sensitivity and low-frequency rejection. These properties make the sensor very useful for monitoring common
structures such as pipelines, vessels, bridges, and storage
tanks in petroleum, refineries, chemical plants, offshore
platforms, as well as factory and process monitoring applications.
Peak Sensitivity V/(m/s); [V/µbar]...... 69 [-63] dB
Operating Frequency Range...............50 - 400 kHz
Resonant Freq. V/(m/s); [V/µbar]...... 75 [150] kHz
Directionality. .................................... ±1.5 dB
.
t Environmental
t
Temperature Range.........................-65 to 175ºC
Shock Limit........................................... 500 g
Completely enclosed crystal for RFI/EMI immunity
t Physical
(1 or 2 meters). ....1232-X-SMA
.
Ordering Information and Accessories
R15αt ............................................... R15α or R15a
Magnetic Hold-Down . .................................. MHR15A
.
Preamplifier. .......................................0/2/4, 2/4/6
.
Preamp to System Cable
(specify length in meters)......1234
-X
Sensors include
NIST Calibration Certificate & Warranty
Frequency response of the R15α. Calibration based on ASTM
E1106; Calibration based on ASTM E976.
Products & Systems
Division
195 Clarksville Road, Princeton Junction, NJ 08550 Phone: 609-716-4000 Fax: 609-716-0706
Email: sales.systems@mistrasgroup.com Internet: www.mistrasgroup.com
Due to continuing improvement, MISTRAS Group, Inc. reserves the right to amend specifications without notice.
Copyright © 2010 MISTRAS Group Inc. All Rights Reserved.
Rev. 03/10 #123-04
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