Atec Endevco-2221F - Manual

ENDEVCO
MODEL
2221F
Piezoelectric Accelerometer
Model 2221F
• High Temperature Operation (+260°C)
• Hermetically Sealed
• 360° Cable Orientation
• Lightweight
• Aerospace and Flight Testing
DESCRIPTION
The ENDEVCO ® Model 2221F piezoelectric accelerome-
ter is designed specifically for high temperature vibration
measurement on small structures and objects.
The unit is hermetically sealed and it is ideal for use in
extreme environmental conditions. Its light weight (11 gm)
effectively minimizes mass loading. The accelerometer is a
self-generating device that requires no external power
source for operation.
The Model 2221F features ENDEVCO’s PIEZITE ® Type
P-8 crystal element, operating in annular shear mode.
This unit exhibits excellent output sensitivity stability over
time. Signal ground is connected to the outer case of the
unit and, when used with an isolated mounting screw, the
accelerometer is electrically isolated from ground. A low-
noise coaxial cable is supplied for error-free operation.
The transducer has a centrally located thru bolt, allowing
for 360° cable orientation. The unit may also be adhesively
mounted if the application permits.
ENDEVCO Signal Conditioner Models 133, 2775A or
OASIS 2000 Computer-Controlled System are
recommended for use with this high impedance accelerom-
eter.
Actual size
-20
-15
-10
-5
0
5
10
15
20
1 10 100 1000 10000 100000
% DEVIATION
FREQUENCY IN HERTZ
TYPICAL AMPLITUDE RESPONSE
-40
-20
0
20
40
60
80
100
120
-100 0 100 200 300 400 500
% DEVIATION
TEMPERATURE o F ( o C)
TYPICAL TEMPERATURE RESPONSE
TYPICAL CAPACITANCE
CHARGE SENSITIVITY
(-73) (38) (149) (260)
STANDARD TOLERANCE
INCHES (MILLIMETERS)
.XX = +/- .02 (.X = +/- .5)
.XXX = +/- .010 (.XX = +/- .25)
.600
(15.24) DIA
UNIT IDENTIFICATION
INSULATED MOUNTING SCREW ASSEMBLY
6-32 UNC-2A THD
DIA .363
(9.22)
.140
(3.56)
.24
(6.1)
.35
(8.9)
.52
(13.2)
.12
(3.1)
.21
(3.1)
INSULATED MOUNTING
SURFACE (HARD
ANODIZED ALUMINUM)
.013
(.33)
.021 DIA SAFETY
WIRE HOLES
(12.60)
.496 DIA
MATES WITH ENDEVCO
3000 SERIES CABLES WITH
10-32 UNF-2B CONNECTOR
F-CAD: PS2221F
APPLIES TO CALIFORNIA FACILITY