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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Paroscientific manufactures a precision weather station called the MET4. This Broadband Meteorological Measurement System takes extremely accurate pressure, temperature, and humidity readings and logs over 200,000 data points for later retrieval. The MET4 makes use of a proprietary pressure port engineered to reduce the dynamic effects of wind on the barometric readings. The MET4A is a fan-aspirated model which provides greater accuracy and stability of the temperature and humidity readings over time. Barometric Range: 50 to 110 kPa Pressure Accuracy: 8 Pa or better Temperature Accuracy: Met4 ±0.5°C, Met4A ±0.1°C or better Relative Humidity Accuracy: ±2% at 25°C Achievable Pressure Resolution: 10 ppb or better
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Paroscientific manufactures high accuracy, high stability standalone Barometry standards in various form factors. Digital indicators and intelligent transducers are equally popular. Paroscientific barometers are pressure sensors with special ranges and extra high accuracy crystals. Barometric Range: 50 to 110 kPa Pressure Accuracy: 8 Pa or better Achievable Pressure Resolution: 10 ppb (0.001 Pa) or better
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The same electronics and display used in the 745 Laboratory Standards are available for use with Paroscientific’s frequency and intelligent pressure transducers. These are generally used for high- and low- temperature applications where the electronics or display could be damaged by environmental conditions but the sensor itself may not.
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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: -54 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