Water detection in solvents
The measurement of water in alcohol or hydrocarbon solvents is an important measurement in many industrial processes. Water can be accurately monitored in a wide range of samples from trace quantities to 100% using a Kemtrak photometric process analyzer. A Kemtrak water analyzer is a recommended replacement for inconvenient and expensive Karl Fischer titration analyzers. Benefits include no maintenance, no reagents and continuous results in real time.
Water measurements can be undertaken on hydrocarbon solvents with ppm accuracy. Proven applications include acetone, isopropyl benzene, propane, tetrahydrofuran, methyl-isobutyl ketone in addition to fuels such as petroleum and aviation gasoline.
Additionally, water can be measured in alcohols, such as methanol and ethanol, from trace amount to pure water.
Water has two regions of activity in the NIR region between 1000 – 2000nm. At 1400nm the O-H stretch in the water molecule is measured, while at 1900nm water has a unique peak due to a combination of O-H stretch and
H-O-H bending. The water peak at 1900 is about five times as large as the water peak at 1400.
The Kemtrak DCP007-NIR LED process photomter is well suited for the detection of water in hydrocarbons. The Kemtrak DCP007-NIR uses a long life high performance NIR LED light source with robust industrial grade fiber optics to provide drift and noise-free measurement with very high precision. Automatic compensation for sample turbidity and/or fouling of the optical windows ensures trouble free operation.
Kemtrak offers a comprehensive range of flow-cell manifolds that can be certified for explosive environments (ATEX).
Contact a Kemtrak sales representative for additional information.