 The Endevco Model 7255A PYROTRON is a miniature, light
weight piezoelectric accelerometer with integral electronics,
designed specifically for near-field pyroshock and high-level
mechanical impact measurements, where unwanted high frequency
signals often mask the desired low-level, low frequency
information. The unit incorporates a uniquely designed
built-in mechanical filter system to effectively block
out high frequency input spikes, protecting the sensing
element from overstress.
The Model 7255A-01 has a 50,000 g full scale output range
and 300,000 g survivability. It is ideal for near-field,
high-g measurement. For lower level shocks, a high output
"-1" range (5,000 g F.S.) is available. The accelerometer
incorporates an internal hybrid signal conditioner in
a two-wire system which transmits its low impedance voltage
output through the same cable that supplies the required
constant current power. Signal ground is connected to
the inner case of the unit which acts as a shield, and
both the output and signal ground terminals are electrically
isolated form the mounting surface. The accelerometer
features an integral 1/4-28 mounting stud and two solder-pin
terminals for output connection. Small gauge, light weight
hook-up wires are required for error-free operation. The
model number suffix indicates acceleration sensitivity
in mV/g; i.e., 7255A-01 features output sensitivity of
0.1 mV/g.
Endevco Signal Conditioner Models 133, 2792B, 2793, 2775A
or OASIS 2000 Computer-Controlled System, set to +10 mV,
are recommended for use with this accelerometer.
Features:
• Low impedance output
• Built-in mechanical filter
• Hermetically sealed
• Light weight (5.0 gm)
• High-g/hear-field shock applications
Endevco Model 7255A-01-1
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