R50I-AST0 pages

R50I-AST Sensor
Integral Preamplifier

Acoustic Emission Sensor
Description and Features

Operating Specifications

PAC’s integral preamp sensors were specifically engineered

t Dynamict
t
Peak Sensitivity, Ref V/(m/s)...................... 88 dB

to attain high sensitivity and have the capability to drive

Peak Sensitivity, Ref V/µbar...................... -26 dB

Operating Frequency Range............. 300 - 550 kHz

Resonant Frequency, Ref V/(m/s). ............ 320 kHz
.

Resonant Frequency, Ref V/µbar............... 500 kHz

housings that are treated to minimize RFI/EMI interference.

Directionality. .................................. +/-1.5 dB
.

Care has also been taken to thermally isolate the critical

t Environmental
t
Temperature Range......................... -35 to 75º C

long cables without the need for a separate preamplifier.
Incorporating a low-noise input, 40 dB preamplifier and a
filter all inside the sensor housing, these transducers are
completely enclosed in metal stainless steel (or aluminum)

input stage of the preamplifier in order to provide excellent
temperature stability over the range of -35º to 75º C.
Their integrated Auto Sensor Test (AST*) capability allows
these sensors to pulse as well as receive. This feature lets
you verify the sensor coupling and performance at any time
throughout the test.

Applications

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

Completely shielded crystal for maximum RFI/EMI
immunity

t Physical
t
Dimensions. .................. 1.13” diameter x 1.16” h
.
t
................................................(29 x 30 mm)

toring applications and is particularly well suited to such
applications as welding monitoring and control.

Weight. ...........................................70 grams
.

Case Material. ..................... Stainless Steel (304)
.

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

Connector. .............................................BNC
.

This sensor is useful in very noisy plant and process moni-

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

Ordering Information and Accessories
R50I....................................................... R50I-AST
Cable (specify cable length)...........................1234 - X
Magnetic Hold-Down . ...................................MHR50I
.
Amplifier......................................................AE2A
Sensors include
NIST Calibration Certificate & Warranty

Frequency response of the R50I-AST. Calibration based on ASTM
E1106; Calibration based on ASTM E976.

* AST — Auto Sensor Testing feature allows AE systems to control the sensor as a pulser
and a receiver at the same time. It can therefore characterize its own condition as well
as send out a simulated acoustic emission wave that other sensors can detect, so the
condition of the nearby sensors also can be tested.

195 Clarksville Road, Princeton Junction, NJ 08550 Phone: 609-716-4000
Fax: 609-716-0706 Email: sales@pacndt.com Internet: www.pacndt.com
A Member of MISTRAS Group Inc.
Due to continuing improvement, Physical Acoustics Corp. (PAC) reserves the right to amend specifications without notice.
Copyright © 2008 MISTRAS Group Inc. All Rights Reserved.

Rev. 10/05 #83-05