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Pressure is measured via a change in the resonant frequency of an oscillating quartz beam by pressure-induced stress. The units provide conformance to a calibration curve of better than ±0.01% FS and have long-term stability of ±0.01% FS over a six month period. Precise thermal compensation is provided via an integrated quartz temperature sensor used to measure the operating temperature of the transducer. The low mass design of the sensing elements allows the transducer to be employed in applications, which experience high acceleration, shock and vibration.
Quartzonix™ Pressure Standards are available in an OEM version (Series 960) with an output frequency between 30 and 45 kHz or an Intelligent version (Series 971) with a networkable RS-495 interface.
PRODUCT NOTE: Effective January 1, 2007, the Quartzonix 970 is no longer available. The 971 Intelligent Transducer Series covers all applications previously served by the 970. Please contact PSI for assistance.
 Quartzonix Series 960
OEM sensor, ±0.01% FS accuracy, frequency output
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 Quartzonix Series 971
Intelligent transducer, ±0.01% FS accuracy, ±0.00001% FS Resolution,
1 to 50 Hz Programmable Update Rates, RS-232C and RS-485 output
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Vibrating Cylindar Pressure Standard
(a product of Weston Aerospace Ltd.)
7881 Z Series - OEM sensor, ±0.01% FS accuracy, frequency output, air only
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7881 T Series - OEM sensor wit
h mounting assembly, ±0.01% FS accuracy, frequency output, air only
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Model 7885 - Intelligent transducer, ±0.01% FS accuracy, RS-232C or RS-485 output, air only
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