Technel represents Paroscientific the world's premier manufacturer of high quality pressure instrumentation. "Paros" has been in business since 1972 developing transducers of the highest quality and superior performance. Precision comparable to the best primary standards is achieved through the use of a special 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 wide range of temperatures. The quartz crystal technology is featured in all Paros products with resolution better than 0.0001% and typical accuracy of 0.01% achieved even under difficult environmental conditions. Other desirable characteristics include high reliability, low power consumption, and excellent long-term stability. Over 30 full scale pressure ranges are available - from a fraction of an atmosphere to thousands of atmospheres (3 psid to 40,000 psia). Absolute, gauge, and differential transducers have been packaged in a variety of configurations including intelligent transmitters, depth sensors, portable standards, water level systems and meteorological measurement systems. Intelligent electronics have two-way digital interfaces that allow the user to adjust sample rates, resolution, engineering units, and other operational parameters. Digiquartz® products are successfully used in such diverse fields as hydrology, aerospace, meteorology, oceanography, process control, energy exploration, and metrology/laboratory instrumentation.
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The MET4 and fan-aspirated MET4A Meteorological Measurement Systems provide high accuracy data from barometric pressure, temperature, and relative humidity sensors. These fully-integrated systems are housed in environmental enclosures allowing indoor or outdoor mounting. Installation hardware and software are included and optional interface cabling is available. The MET4 solar radiation shield protects the temperature and humidity sensors from precipitation and solar radiation. Features and Specifications: • Pressure Accuracy: Better than ±0.08 hPa (0.001 psi) • Barometric Pressure Range: 500 – 1100 hPa (7 – 16 psi) • Temperature Accuracy: Better than 0.5°C (Met4) and better than 0.1°C (Met4A) • Relative Humidity Accuracy: ±2% at 25°C • Resolution: One-part-per billion
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The Model 735 Intelligent Display performs all of the functions of the Model 745 High Accuracy Portable Standard with the frequency inputs from one external Digiquartz® Transducer. It contains an intuitive Front Panel Menu System, Intelligent Interface Board, 2-Line Display, RS-232 communication port, tare capability, and transducer connection terminals.
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The Model 745 Portable Transfer Standards provide the highest accuracy pressure measurements for laboratory and metrological applications. Turn it on and immediately read the pressure values in any of nine different user-selectable engineering units. All pressure readings are fully temperature compensated and linearized. Tare functions, pressure units, temperature units, resolution, sampling time, number of display digits, communication settings, baud rates, sensor address, and passwords can be selected via the front panel menu system. The simple, intuitive front-panel user interface and versatile functionality with the rear panel RS-232 computer interface make the Model 745 the best choice for high performance pressure calibrations. Features and Specifications: • Absolute Pressure Range: 15 ... 40,000 psia (0.10 ... 276 MPa) • Gauge Pressure Range: 15 ... 200 psig (0.10 ... 1.38 MPa) • Barometric Range: 7 – 16 psia (50 – 110 kPa) • Accuracy: Up to 0.008% Full Scale • Achievable Pressure Resolution: 10 ppb (0.001 Pa) or better • VCR Fitting version is available
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A ruggedized portable pressure transfer standard, the Paroscientific model 765 is ideal for field applications requiring high precision and accuracy. The Paroscientific 765 is used extensively throughout Canada’s North for remote airstrips and scientific expeditions. Available Ranges: Barometric, 0-15 through 0-40,000 psia, 0-15 through 0-200 psig Accuracy: 0.008% FS Resolution: 0.0001% FS Integral data logging capabilities – stores over 390,000 data points NIST-Traceable calibration certificates RS-232 and USB interfaces Free software for Data retrieval, calibration, and programming ~150 hr operation on internal rechargeable battery
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Paroscientific depth transducers are used in a wide variety of applications from towed arrays and ROVs to tectonic research and tsunami detection. The nano-resolution sensors can detect a change in water level of as little as 0.1 mm from a depth of 7 km. The unique anti-fouling port on the Paroscientific Series 8000 depth transducers ensures high accuracy over long periods of operation. Both intelligent and frequency models are available in all ranges. Housings are either PVC, Acetal, or Stainless Steel depending on pressure range. Available Ranges: 0-10 through 0-7,000 meters of water absolute, 0-10 through 0-140 meters of water gauge Operating Ranges: -2 through 40°C Accuracy: 0.01% FS or better Achievable Resolution: 0.000001% FS (10 ppb) or better NIST-Traceable calibration certificates Power consumption: 0.2W for intelligent transmitters, 0.03W for frequency transducers
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Paroscientific piezoresonant quartz pressure transducers transmit a pressure signal as a percentage change in frequency in the 30-42 kHz band. A temperature signal is also found in the 168-172 kHz band. Paroscientific’s Frequency output transducers are commonly used in OEM applications or with the model 735 intelligent display for harsh environment monitoring. Available Ranges: Barometric, 0-15 through 0-40,000 psia, 0-15 through 0-200 psig Operating Ranges: -54 through 177°C Accuracy: 0.01% FS or better Achievable Resolution: 0.000001% FS (10 ppb) or better NIST-Traceable calibration certificates Power consumption: ~0.02W at 16VDC
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Paroscientific series 1000, 6000, and 9000 intelligent pressure transmitters are highly stable and fully thermally compensated throughout their operating range. Available Ranges: Barometric, 0-15 through 0-40,000 psia, 0-15 through 0-200 psig Operating Ranges: -40 through 70°C Accuracy: 0.01% FS or better Typical Resolution: 1 ppm at 1 sample/sec Achievable Resolution: 0.000001% FS (10 ppb) NIST-Traceable calibration certificates RS-232 and RS-485 interfaces Free software for Data logging, calibration, and programming Power consumption: ~0.1W at 6VDC Compatible with model 715 back-lit liquid crystal display