09Winter 2009 Product resource - Endevco
09Winter 2009 Product resource - Endevco
09Winter 2009 Product resource - Endevco
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Piezoelectric accelerometers<br />
Model 7703A<br />
The <strong>Endevco</strong> model 7703A Isoshear ® series of piezoelectric accelerometers<br />
is designed for general vibration measurement and modal analysis of<br />
structures and medium to large objects. This hermetically sealed device<br />
is extremely stable and insensitive to such environmental inputs as base<br />
bending and thermal transients, has been radiation tested up to 100 Mrads<br />
(10 kGy) and is capable of measurement up to +550°F (+288°C). The model<br />
7703A family features <strong>Endevco</strong>’s Piezite ® proprietary material operating<br />
in shear mode and requires only an external charge amplifier for proper<br />
operation. The 7703A has become a reference standard within the vibration<br />
analysis community.<br />
> Ground isolated and hermetically sealed<br />
> To +550°F (+288°C), temperature compensated<br />
> High output/modal applications<br />
Specifications 2248 2270 2271A 2273A 2276 6222S 6233C 6237M70 7221A 7240C 7703A 7704A<br />
Description<br />
Radiation hardened<br />
Small size<br />
Lightweight<br />
Back to back<br />
calibration<br />
Industry standard<br />
Cryogenic<br />
accelerometer<br />
Radiation hardened<br />
High temp<br />
Radiation hardened<br />
High temp<br />
High temp<br />
Differential output<br />
High temp<br />
Differential output<br />
Ground isolated<br />
Ideal for gas<br />
turbine testing<br />
360˚ cable<br />
orientation<br />
High freq to 30 kHz<br />
Lightweight<br />
500˚F operation<br />
550˚F operation<br />
Radiation tested<br />
Ground isolated<br />
Radiation tested<br />
MIL-STD-750 apps<br />
Sensitivity Typical pC/g 3.0 2.2 11.5 3.0 10 20 / 50 / 100 10 / 50 / 100 10 10 3.0 50 / 100 50 / 100<br />
Weight gram 13 40 27 25 30 91 75 / 110 / 110 30 10.5 4.8 25 / 29 25 / 29<br />
Sinusoidal limit g 500 1000 1000 1000 500 2000 / 1000 / 500 1000 / 1000 / 500 500 1000 1000 2000 / 1000 2000 / 1000<br />
Shock limit g 3000 15 000 10 000 10 000 3000 4000 / 2000 / 1000 2000 / 2000 / 1000 2000 5000 5000 10 000 / 5000 10 000 / 5000<br />
Frequency response ±1dB Hz 1–8000 2–20 000 1–8000 1–10 000 1–7000 1–12K / 1–9K / 1–9K 1–8K / 0.1–5K / 0.1–3K 1–5000 0.1–12 000 1–20 000 1–9000 / 1–8000 1–9000 / 1–8000<br />
Min temperature ˚C (˚F) -54 (-65) -54 (-65) -269 (-452) -184 (-300) -55 (-67) -54 (-65) -55 (-67) -55 (-67) -55 (-67) -55 (-67) -55 (-67) -55 (-67)<br />
Max temperature ˚C (˚F) 482 (900) 177 (350) 260 (500) 399 (750) 482 (900) 260 (500) 482 (900) 650 (1200) 260 (500) 260 (500) 288 (550) 288 (550)<br />
Signal/ground isolation No Selectable Yes No No Yes Yes Yes Yes No Yes Yes<br />
Hermetic seal Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes<br />
Mounting method Screw Stud Stud Stud Stud Bolt Bolt Bolt Screw Stud Stud Stud<br />
Piezoelectric accelerometers 23
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