R50-Alpha0 pages
R50α Sensor
General Purpose, 500 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:
t Dynamict
Peak Sensitivity V/(m/s); [V/µbar]...... 62 [-62] dB
Operating Frequency Range............. 100 - 700 kHz
Resonant Freq. V/(m/s); [V/µbar]..... 100 [500] kHz
•tUse of the more popular SMA type of connector.
Directionality. .................................... ±1.5 dB
.
•tCavity is machined from a solid stainless steel rod makt ing for a simpler and more robust design.
t Environmental
•tDramatically increased thickness of the ceramic shoe for
t better mechanical stability.
Temperature Range.........................-65 to 175ºC
Shock Limit........................................... 500 g
Completely enclosed crystal for RFI/EMI immunity
•tDistance from the bottom of the ceramic shoe to the
t bottom edge of sensor cavity increased for better insut lation resistance and ground avoidance.
•tIntroduced a 30-degree angle at the bottom edge of the
t sensor cavity.
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.
Application
This sensor is useful in very noisy plant and process monitoring applications and is particularly suited to such applications as welding monitoring and control.
t Physical
t
Dimensions. .... .0.75” dia. x 0.88” h (19 x 22.4 mm)
.
t
Weight. ...........................................32 grams
.
Case Material. ............................ Stainless Steel
.
Face Material. ....................................Ceramic
.
Connector. ............................................. SMA
.
Connector Locations..................................Side
Seal................................................... Epoxy
Sensor to Preamp Cable
(1 or 2 meters). ....1232-X-SMA
.
Ordering Information and Accessories
R50αt ............................................... R50α or R50a
Magnetic Hold-Down . .................................. MHR15A
.
Preamplifier. .......................................0/2/4, 2/4/6
.
Preamp to System Cable
Frequency response of the R50α. Calibration based on ASTM
E1106; Calibration based on ASTM E976.
(specify length in meters)......1234
-X
Sensors include
NIST Calibration Certificate & Warranty
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. 02/05 #135-04
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