Digiquartz® sensors are based on the Resonant Quartz Crystal Technology developed by Paroscientific over the last five decades. Parts-per-billion resolution and precision comparable to the best primary standards are achieved through the use of a special quartz crystal resonator whose frequency of oscillation varies with pressure-induced stress. Advantages include inherently-digital outputs, high resolution and accuracy, low power consumption, insensitivity to environmental factors, high reliability, and excellent long-term stability.

Digiquartz® products are successfully used in diverse fields such as Metrology, Oceanography, Meteorology, Geodesy, Hydrology, and Aerospace. Our sensors play the key roles in Disaster Warning Systems that measure and predict earthquakes, tsunamis, volcanic eruptions, severe weather, and flooding.

Paroscientific was founded in 1972 by Jerome M. Paros after a decade of research on digital force sensors. The company is located in an award-winning facility that houses all of the skilled personnel and sophisticated manufacturing and test equipment necessary to produce the world's most accurate pressure instrumentation. Our quality system and commitment to excellence ensure customers of outstanding products and services – solutions that work the first time out and for decades to come.

The History of Paroscientific is the history of innovation, continuous product improvement and a demonstrated commitment to excellence.

Paroscientific Intelligent Transmitters consist of a Digiquartz®Pressure Transducer and a digital interface board in an integral package. Commands and data requests are sent via two-way RS-232 or RS-485 serial interfaces. Direct digital outputs in engineering units are provided with parts-perbillion resolution using the built-in, anti-aliasing IIR filter mode. Typical accuracy is 0.01% even under harsh environmental conditions. All intelligent transmitters are preprogrammed with calibration coefficients for full plug-in interchangeability.

Intelligent transmitters are available in 20 absolute pressure ranges from 15 psia (0.10 MPa) to 40,000 psia (276 MPa),and 7 gauge pressure ranges from ± 2 psig (±0.015 MPa) to 200 psig (0.15 MPa). Dual RS-232 and RS-485 interfaces allow complete remote configuration and control of all operating parameters, including resolution, sample rate,choice of engineering units, integration time, and sampling requests. Commands include: Single sample and send, synchronized sample and hold, continuous sample and send,and special burst sampling modes.