Paroscientific Pressure Measurements

Paroscientific Pressure Measurements is the world leader in the field of precision pressure measurements. Digiquartz® sensors are based on the Resonant Quartz Crystal Technology developed by Paroscientific over the last five decades.

General Information

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.

Paroscientific Products

Model 765 Pressure Standard
Model 765 Pressure Standard

Submersible Depth Sensor

Digiquartz® Transducers are incorporated into submersible housings as depth sensors. All depth sensor ranges are available with either frequency outputs or integral intelligent electronics with bi-directional digital communications.

Typical application accuracy is better than 0.01% with parts-per-billion resolution, low power consumption, and excellent long-term stability. Intelligent Depth Sensors with 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. Other features include support for both serial loop and multi-drop networking, selectable baud rates up to 115,200 baud, high-speed continuous pressure measurements, a power management “sleep” mode, data formatting features, synchronization of measurements with time-based integration, unit identification commands, and 2 or 4 wire RS-485 transmission distances greater than 1 kilometer. All Digiquartz® Transducers come with a limited five-year warranty with the first two years covered at 100%.

Transmitter

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. Features include support for both serial loop and multi-drop networking, high-speed continuous pressure measurements, selectable baud rates up to 115,200 baud, synchronization of measurements with time-based integration, 2 or 4 wire RS- 485 transmission distances greater than 1 kilometer, a power management “sleep” mode, data formatting features, and unit identification commands.

Free software is included for setup, configuration, sampling, display, data logging, and plotting. All Digiquartz® Transducers come with a limited 5-year warranty with the first 2 years covered at 100%.

Transducer

Paroscientific manufactures and sells a complete line of high precision pressure instrumentation. Parts-per-billion resolution and typical accuracy of 0.01% are achieved even under harsh environmental conditions. Digiquartz® Transducers are essential for a variety of application areas where high resolution, accuracy, reliability, ruggedness, long-term stability, low power consumption and low cost of ownership are important requirements.

The remarkable performance of these transducers is achieved through the use of a precision quartz crystal resonator whose frequency of oscillation varies with pressure induced stress. A quartz crystal temperature signal is provided to thermally compensate the calculated pressure and achieve high accuracy over a broad range of temperatures. The transducers include integral shock protection to withstand extremely high acceleration, shock, and vibrational loads.

Paroscientific Pressure Measurements Quality Management System is certified to the requirements of the ISO 9001 International Quality Standard. It provides consistency in our products and processes from design and development through production, calibration, test, and servicing. Our quality system and commitment to excellence ensure customers of outstanding products and services. We offer a marketleading five year limited warranty on all Digiquartz® Transducers with the first two years covered at 100%.

Reference : paroscientific.com

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