ENDEVCO
MODEL
7596A
Variable Capacitance Accelerometer
Model 7596A
• Economical and Rugged
• 2 to 100 g Full Scale
• DC Response
• Gas Damped Sensor
• Mechanical Over-range Stops
DESCRIPTION
Actual size
The ENDEVCO Model 7596A VALULINE
accelerometer family is a low cost solution to low-level,
low frequency measurements. Applications include labora-
tory measurements, ground transportation studies and mea-
surements where the accelerometer will be subjected to
high shock levels (up to 10 000 gs, see specifications).
The 7596A is ideal for modal studies on large structures.
Gas damping and internal overange stops enable the
anisotropically etched silicon microsensors to withstand
high shocks and acceleration loads. The use of gas damp-
ing, in the sensor, results in very small-induced changes of
frequency response. The patented sensor design ensures
immediate stability making the unit ready to take accurate
DC or dynamic data within one millisecond!
The 7596A can operate from 8.5Vdc to 30Vdc and pro-
vide a high level, low impedance output. The output is
high enough to drive most laboratory instruments, tape
recorders and data acquisition systems without amplifica-
tion or signal conditioning. The output can be fed into
either a differential or single-ended amplifier or standard
bridge electronics with 10Vdc excitation.
ENDEVCO Model 136 Three-Channel System, Model
4430A or OASIS Computer-Controlled System are
recommended signal conditioners.
SPECIFICATIONS
PERFORMANCE CHARACTERISTICS: All values are typical at +75°F (+24°C) and 15 Vdc excitation unless otherwise stated. Calibration data, traceable to
the National Institute of Standards, (NIST), is supplied.
Units
g pk
mV/g
Hz
7596-2
±2
-10
±10
-30
±30
-50
±50
-100
±100
20 ±2
0 to 1000
6000
±1
±2
1
±200
0.6
RANGE
SENSITIVITY (at 100 Hz) [1] [2]
FREQUENCY RESPONSE (± 5%)
MOUNTED RESONANCE FREQUENCY
NON-LINEARITY AND HYSTERESIS [3]
1000 ±100
0 to 15
1300
±0.20
±0.50
1
200 ±20
0 to 500
3000
±0.20
±0.50
1
66 ±8
0 to 800
5500
±0.20
±0.50
1
40 ±4
0 to 1000
5500
±0.2
±0.5
1
Hz
% FSO Typ
% FSO (Max)
% Typ
mV Max
TRANSVERSE SENSITIVITY [4]
ZERO MEASURAND OUTPUT [2]
DAMPING RATIO
±200
3.0
±200
0.7
±200
0.7
±200
0.6
DAMPING RATIO CHANGE
From -65°F to +250°F ( -55°C to +121°C)
%/°F
%/°C
+0.04
+0.08
+0.04
+0.08
+0.04
+0.08
+0.04
+0.08
+0.04
+0.08
APPLIES TO CALIFORNIA FACILITY