Atec Endevco-2272 - Manual

The Endevco ® model 2272 is a piezoelectric
accelerometer designed specifically for vibration
measurement at temperature extremes. The unit is
hermetically sealed for use in harsh environments and
features long term stability. Its unique sensing elements
offer an unusually flat temperature response over a broad
range. The accelerometer is a self-generating device that
requires no external power source for operation.
The model 2272 features Endevco’s Piezite ® type P-10
crystal element, operating in compression mode. This
unit exhibits excellent output sensitivity stability over
time. Signal ground is connected to the outer case of
the unit. When used with an isolated mounting stud, the
accelerometer is electrically isolated from ground. The
accelerometer features a 10-32 UNF-2A side-connector. A
low-noise coaxial cable is supplied for error-free operation.
Endevco signal conditioner models 133, 2775B, 2771C, 6634C or Oasis 2000
computer-controlled 4990A-X system are recommended for use with this high
impedance accelerometer with cards 428 and/or 433.
• Long term stability
• Hermetically sealed
• Operational to -452°F (-269°C)
• Requires no external power
• Vibration measurement at extreme temperature
-20
-15
-10
-5
0
5
10
15
20
1 10 100 1000 10000
% DEVIATION
FREQUENCY IN HERTZ
TYPICAL AMPLITUDE RESPONSE
-20
-15
-10
-5
0
5
10
15
20
25
30
% DEVIATION
TEMPERATURE ϒF (ϒC)
TYPICAL TEMPERATURE RESPONSE
CAPACITANCE
CHARGE SENSITIVITY
(-240) (-129) (-18) (38) (149) (260)
-400 -300 -200 -100 0 100 200 300 400 500
Model 2272
Piezoelectric accelerometer
Features Description