R30-Alpha0 pages

R30α Sensor

General Purpose, 300 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
t making 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 insut lation 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” dia. x .88” h (19 x 22.4 mm)
.

Weight. ...........................................29 grams
.

Case Material. ............................ Stainless Steel
.

Face Material. ....................................Ceramic
.

Connector. ............................................. SMA
.

Connector Locations..................................Side

Seal................................................... Epoxy

Sensor to Preamp Cable

Application
This sensor provides additional noise rejection for applications such as production line process monitoring applications such as punch press monitoring, forming operations,
stamping, applications and process control applications
such as leak detection within process control plants in the
presence of flow and process noises.

Peak Sensitivity V/(m/s); [V/µbar]...... 58 [-62] dB

Operating Frequency Range............. 150 - 400 kHz

Resonant Freq. V/(m/s); [V/µbar]..... 300 [330] 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
R30αt ................................................R30α or R30a
Magnetic Hold-Down . .................................. MHR15A
.
Preamplifier. .......................................0/2/4, 2/4/6
.
Preamp to System Cable

TY

MANA

GE

M

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T S YS T E

Due to continuing improvement, MISTRAS Group, Inc. reserves the right to amend specifications without notice.
Copyright © 2010 MISTRAS Group Inc. All Rights Reserved.

LI

EN

Fax: 609-716-0706

A

M

Phone: 609-716-4000

Email: sales.systems@mistrasgroup.com www.mistrasgroup.com

TIFIED Q
U

Sensors include
NIST Calibration Certificate & Warranty

195 Clarksville Road, Princeton Junction, NJ 08550
Products & Systems
Division

-X

C

Frequency response of the R30a. Calibration based on ASTM
E1106; Calibration based on ASTM E976.

(specify length in meters)......1234

ISO 9001

#122-04