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ETA Process Instrumentation -- Since 1971
ETA Associates merged with Process Instrumentation Inc. as of 9/1/2011. Visit our sister companies: Safety Inc and iFacility Service.
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Technology Overview
Continuous Wavelength Scanning
More importantly, wavelength scanning enables superior decomposition of interfering spectra, resulting in much higher selectivity than fixed filter or diode array based instruments. Illustrated in the figure is interference of moisture spectrum (H2O) with infrared nitric oxide (NO) measurement, potentially causing significant drifts or measurement inaccuracies. Our wavelength scanning spectrometer and advanced spectral processing algorithm resolves
this interference.
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Infrared spectra of NO and H2O, showing unique but overlapping features
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High optical throughput or Etendue
High optical throughput or Etendue is critical for high sensitivity measurement and/or measurement through optically opaque samples. Higher throughput results in higher spectral quality or signal-to-noise ratio. Our proprietary tunable filter spectrometer enables ultra high Etendue without the costs and complexities otherwise needed to achieve such performance. Precisive’s analyzers achieve parts-per-billion (ppb) sensitivity for measurement of most gases and
parts-per-million (ppm) sensitivity for most liquids.
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Expected spectral quality difference between our tunable filter spectrometer (TFS) and a grating/diode array based spectrometer
- 20X better signal-to-noise ratio
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Highly Versatile Sensor Platform
Our spectroscopy engine platform enables developments of custom monitoring applications rapidly and cost-effectively. Various gases and liquids are detectable within the currently supported Visible – Infrared wavelength region. Future development will include the Ultraviolet region.
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Precisive’s optical analyzers do not require high-precision alignment between the optical components and subassemblies typically required by other high-performance spectrometer. This results in vibration-immune instruments suitable for installation in industrial processes as well as cost-effective instruments.
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Advanced Signal Processing
Various spectral processing algorithms are available from filtering to chemometrics. Customized application software runs on the background without requiring any customer input to ensure the highest level of robustness and performance.
From www.precisive-instruments.com
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Instrument Co
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ETA Process Instrumentation, 119 Foster Street, Bldg. 6, Peabody, MA 01960 • (978) 532-1330 or sales(a)etapii.com
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