R6 Sensor0 pages

R6α Sensor

General Purpose, 60 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

•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
t insulation resistance and ground avoidance.
•tIntroduced a 30-degree angle at the bottom edge of the
t sensor cavity.

Peak Sensitivity V/(m/s); [V/µbar]....... 75 [-64] dB

Operating Frequency Range...............35 - 100 kHz

Resonant Freq. V/(m/s); [V/µbar]......... 55 [90] kHz

Directionality. .................................... ±1.5 dB
.

t Environmental
t
Temperature Range.........................-65 to 175ºC
t

Shock Limit........................................... 500 g

Completely enclosed crystal for RFI/EMI immunity

t Physical

This sensor can be used on metal and FRP structures such as
pipelines or storage tanks in petroleum, refineries, chemical
plants, and offshore platforms, due to its high sensitivity
and low resonance frequency properties.

Dimensions. ..... 0.75” dia. x 0.88” h (19 x 22.4 mm)
.

Weight. ...........................................38 grams
.

Case Material. ............................ Stainless Steel
.
Face Material. ....................................Ceramic
.

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

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

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

Application

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.

Sensor to Preamp Cable

(1 or 2 meters). ....1232-X-SMA
.

Ordering Information and Accessories
R6αt .................................................. R6α or R6a
Magnetic Hold-Down . .................................. MHR15A
.
Preamplifier. .......................................0/2/4, 2/4/6
.
Preamp to System Cable

Frequency response of the R6α. 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 #124-04