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Accelerometer features onboard temperature compensation.
December 12, 2007 -
Variable capacitance model 7290D exhibits thermal stability and global accuracy required for acceleration measurement in laboratory test, automotive, and aerospace applications. Gas damping and internal over-range stops enable anisotropically etched, silicon sensing element to withstand shock and acceleration loads. Delivering 2.5% total dynamic accuracy over entire military spec range of -55 to +125°C, product operates with excitation of 8.0-30.0 Vdc.
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Endevco Introduces Accelerometer with Innovative Onboard Temp Compensation
Endevco introduces new variable capacitance accelerometer featuring onboard, microprocessor-based temperature compensation
Endevco Corporation, the leader in sensing solutions for demanding vibration, shock and pressure applications, has announced introduction of the Endevco model 7290D variable capacitance accelerometer with onboard, microprocessor-based temperature compensation. It is designed to provide very high thermal stability and global accuracy required for measurement of relatively low-level accelerations in laboratory test and measurement, automotive and aerospace applications including both military and commercial flight testing.
Patented by Endevco, typical applications for the new model 7290D require measurement of whole body motion immediately after the accelerometer is subjected to a shock motion and in the presence of severe vibration inputs. Gas damping and internal over-range stops enable its anisotropically etched, silicon sensing element to withstand high shock and acceleration loads. The use of gas damping in the sensing element also results in very small thermally induced changes in frequency response.
With its onboard, microprocessor-based temperature compensation, the model 7290D delivers 2.5% total dynamic accuracy over the entire military spec temperature range of -55ºC to +125 ºC. Total dynamic accuracy is defined as the root of the sum of the squares of thermal sensitivity shift, non-linearity and hysteresis, and transverse sensitivity.
Custom signal conditioning enables the model 7290D to operate with a nominal excitation of 8.0 Vdc to 30.0 Vdc and provides a high-level, low-impedance output. The ±2.25 V differential output (single-ended output optional) is DC coupled at a DC bias of approximately 2.5 V.
In order to maintain stringent thermal characteristics and high accuracy, a custom ASIC provides factory programmable temperature compensation. All compensation and adjustments are incorporated within the accelerometer and no post-processing is required. The compensation is accomplished via a five-point, piecewise, linear fit algorithm for both thermal sensitivity shift (TSS) and thermal zero shift (TZS). A Transducer Electronic Data Sheet (TEDS) conforming to IEEE 1451.4 has been included to store serial number and calibration information.
For further information contact:
ENDEVCO
Yeni Hoo, Marketing Communications Supervisor
949-493-8181 x242
yeni.hoo@endevco.com
KCOMM
Dave Holscher, Vice President
949-295-5515
dave@kanatsiz.com
Endevco Corporation, a Meggitt group company, is one of the world's leading designers and manufacturers of dynamic instrumentation for vibration, shock and pressure measurement. The company's comprehensive line of piezoelectric, piezoresistive, Isotron® and variable capacitance accelerometers are used to solve measurement problems in a wide variety of industries including aerospace, automotive, defense, medical, industrial and energy. Available products include pressure transducers, microphones, electronic instruments, and calibration systems. Founded in 1947 with headquarters in San Juan Capistrano, CA, Endevco has a global network of manufacturing and research facilities, sales offices and field engineers in the U.S., Europe and Asia. www.endevco.com
Meggitt PLC, headquartered in the UK, is an international group operating in North America, Europe and Asia. Known for its specialist extreme environment engineering, Meggitt is a world leader in aerospace, defense and electronic industries. www.meggitt.com
Contacts:
Marketing:
Yeni Hoo Marketing Communications Supervisor
USA
Phone: 949-493-8181 ext 242
 E-mail this person
Public Relations:
KCOMM
Dave Holscher Vice President
3812 Hemingway Ave.<
Irvine CA 92606
USA
Phone: 949-295-5515
E-mail this person
Company Information:
Name: Endevco Corp.
Address: 30700 Rancho Viejo Rd.
City: San Juan Capistrano
State: CA
ZIP: 92675 1748
Country: USA
Phone: 800-982-6732
FAX: 949-661-7231
http://www.endevco.com
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