Barometers
Technel has a wide range of barometer manufacturers to choose from with different accuracy levels serving several applications. There are stand alone bench top units or individual transducers available. Mensor has transducers, portable hand-held units and bench top lab models with uncertainties from 100 ppm to 300 ppm of reading. The Honeywell HPB transducer has built-in temperature compensation from -40 to 85 degrees C and meets FAA specification. Paroscientific features barometric transmitters, transducers and laboratory standard barometers with uncertainties to 80 ppm.
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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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The 745-2 Regional Standard Barometer is a custom Technel unit developed for Environment & Climate Change Canada SPECIFICATIONS: 745-2 Regional Standard Barometer, consisting of:- 2 Paroscientific model 745-16B Lab standard with the following features:
- Accuracy: 0.008%
- Resolution = 0.0001%
- Password protection
- Rate of pressure change
- Adjustable number of display digits
- Sensor temperature
- Pressure bar graph
- Front panel Menu system with two-lines display
- 110VAC or battery operation
- Range: 800-1100 mBars
- Custom front mounting plate with silk screening
- Custom back panel with two pressure ports, RS-232
- Plumbed with AN-4 fittings, S/S tabulations and wired
- Units mounted on a custom plate for easy access and battery replacement
- ISO 9001 quality system
- NIST traceable calibration – Optional ISO-17025 calibration
- Calibration and operational SW compatible with all Paroscientific units
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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