![]()
THE ANALYZER
AMETEK’s 4500 Phenol Analyzer system is designed for automatic monitoring of waste water streams for low levels of phenols. It is a highly reliable system combining the recognized performance of the AMETEK Western ResearchTM 4000 Photometric Analyzer and a sampling system developed and tested over a two-year period.
THE MEASUREMENT
Low concentrations of phenol can be selectively monitored by differential ultraviolet photometry using the characteristic wavelength shift with pH. UV absorption is higher in basic water solutions than it is in acidic phenol solutions. The difference in absorption is linearly proportional to the phenol concentration and is specific since no other contaminants in water will show a change.
The difference in absorption of the acidic and basic solutions is measured with the AMETEK 4000 Photometric Analyzer using a 289 nm measuring wavelength and usually a 365 nm reference wavelength, although other reference wavelengths may be used in special cases.
The patented split-beam design of the photometric analyzer assures accurate analytical results by compensating for suspended solids, bubbles, and background UV absorbance. Even with waste water backgrounds greater than 2 absorbance (less than 1% of the light transmitted at the measuring wavelength) accurate measurement can be made.
FEATURES
- Complete system for monitoring phenol concentrations
- Full scale range as low as 100 parts per billion
- Rugged and reliable with time-proven AMETEK 400 photometric analyzer and sampling system
- High selective through use of phenolic "basochromatic shift"
SPECIFICATIONS
- Ranges: 0-0.1 ppm (0-100 ppb) minimum, 0-10 typical. Higher ranges available.
- Analysis cycle: 10 minutes standard (eight minutes for continuous analysis, two minutes for automatic zero and system back-flush)
- Analyzer output: Linear, 4-20 ma standard; others available
- Reproducibility: 1% of full scale
- Accuracy: ± 2% of full scale
- Calibration: an optical calibration filter corresponding to a fixed phenol concentration is proved
- Utility requirements: 115V, 60 Hz., 500 watts maximum (50 Hz. available).
- Electrical classification: General purpose. (Systems designed for Class I, Group D, Divisions 1 or 2 are also available)
The analyzer field unit is designed for use in Class I, Division 1, Group C, D or certified to ATEX II 2 G EEx de m ia IIC T6 to T3.
The 4000 Controller may be supplied in an ATEX II 2 G EEx d IIC T6 enclosure on special order.
The power supply is only suitable for non-hazardous and Class I, Division 2 area installations.