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Water in Ethylene Glycol Online Monitoring with a Clear View Photometer
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From Guided Wave, Inc.
Purpose: To determine water content in ethylene glycol (EG) without sample temperature control. Experimental: Our PS-2E NIR diode array spectrometer was used to measure the NIR spectra of 0 to 6% water in EG in the 25 to 35 °C temperature range using a 2 mm cuvette in our HeaterCell™ fiber optic accessory. The resulting data were then used to define the wavelengths for our on-line process photometers. Results: The resulting PS-2E spectra are shown below for 0, 2, 4 and 6% water in EG, each at 25, 30 and 35 °C. Products & Services
Turbidity instruments measure the average volume of light scattering over a defined angular range. Both particle size and concentration of suspended solids as well as dissolved solids can affect the reading.
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Water quality photometers and colorimeters are ion-specific, computer-interfaced probes that are designed to determine the concentration of a solution from its color intensity.
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Fiber optic probes collect light or spectra from extreme environments inside reaction vessels at high temperatures or pressures. Product types include UV-Vis spectroscopy probes, Raman spectroscopy probes, and refractometry probes.
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Gas instruments detect, monitor or analyze gases present in an environment.
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Photometers produce electrical signals, which correspond to radiant flux energy, for a series of discrete wavelength intervals. They are used to measure wavelengths of light spectra and optical or atomic emissions.
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Product Announcements
Topics of Interest
Purpose: Measurement of water in a multiple alcohol and brine solution with a ChemView® photometer. Experimental: PS-2E fiber optic diode array NIR spectrometer, 2 m low-OH optical fibers,...
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To replace a gas chromatograph (GC) by continuously measuring the amount of ethylene glycol in diethylene glycol using a near infrared (NIR) ClearView™ fiber optic filter photometer.
Background:...
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Objective: Measure water to better than ±0.01% (wt.) in an aromatic liquid mixture with a Chem- View® photometer.
Experimental: Samples were measured in a 5 mm cuvette in our HeaterCell fiber...
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Purpose: To measure the concentrations of ethyl acetate (EtOAc- 80-90%), methanol (MeOH - <10%) and water (<10%) for continuous control of a solvent recovery process to reduce distillation time and...
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Purpose: To measure epoxy value and starting liquid resin content with the two-probe Simulplex™ ChemView® photometer and fiber optic insertion probes with simple, easy-to-maintain, linear...
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