Low Water Levels in Various Solvents: On-line Monitoring by a Miniature MIR Spectrometer :
Low Water Levels in Various Solvents: On-line Monitoring by a Miniature MIR Spectrometer Joseph P Sung and Jim Tatum, Rohm and Haas Company, Huston, TX, USA
Yael Barshad and Yoav Barshad, Applied Analytics, Inc., Chestnut Hill, MA, USA
MicroSpec:
MicroSpec In-line Infrared Sensors Covering the Mid Infrared from 2 to 14µm (5000 to 700 cm-1 )
Direct in Stream Measurements:
Direct in Stream Measurements IR light source
A single, dual or up to 6 elements array detector with a filter that isolates a specific IR wavelength
A thermistor to measure temperature
ATR element.
Transmission element
MicroSpec Specifications:
MicroSpec Specifications Detection: MIR Transducer
Pressure: Maximum 150psig (10Bar)
Temperature: 1000C (2120F)
Drift: 0.5% of reading/ 24 hours
Noise: ±0.2% full scale
Electrical: 24 V DC 100 mA
Output: 4 – 20 mA 700 W load galvanically isolated.
Connection: The body is threaded for insertion into the process pipe 1-2-UNFF
Material of construction stainless steel body (316L)
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Features:
Features Makes in line quantitative measurements at selected wavelengths
Contains no moving parts and functions in process stream environments
Replaces spectrometers in the process plant and eliminates the need for optical fibers
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Absorbance spectra of water in DMF (100 PPM), DMF used as blank (1cm cell)
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