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Model 4000 Configurable Photometric Analyzer

Model 4000 ConfigurableThe Need
The reliable, efficient, and environmentally-friendly operation of many industrial processes frequently requires continuous analysis of the process's inputs, reactions, and outputs. These analyses may be for the detection or monitoring of: impurities; purity; turbidity; blending; quality; color or some other key chemical or trait. Regardless of the chemical or trait being monitored, the applications always require the utmost in analyzer reliability and durability to help ensure continuous, quality process operations.

The Solution
AMETEK's Western ResearchTM Model 4000 Photometric Analyzer is a proven choice for reliable, accurate, continuous, online photometry measurement. It is the only photometric analyzer on the market with over 40 years of actual field experience in thousands of applications. The Model 4000 was initially developed to fill various process and environmental measurement needs within the chemical industry, and later the applications were expanded to include a wide variety of other industries.

The world-renowned reliability of the Model 4000, and its derivatives, has led to the automation of many process measurements that were previously only possible through laboratory analysis. Virtually every industrial sector is using a Model 4000 to monitor and control critical process parameters. Petrochemical, pulp and paper, food processing, chemical, metal refining, oil refining, gas sweetening, power generation, fertilizer manufacture, film coating, and wastewater treatment are only some of the industries currently utilizing the Model 4000.

The rugged and elegantly simple design of the Model 4000 enables it to provide decades of online service. It is not uncommon for our customers to experience more than 30 years of operational service, even in the harshest of process applications and environmental conditions.

From the basic analyzer to fully equipped analyzer shelters, AMETEK has built it all. The Model 4000 can be configured for any location across the world, from a general-purpose installation to a NEC Class 1, Division 1 installation for the Middle East to CENELEC Zone 1 systems for Siberia. We have the knowledge and ability to meet any on or offshore installation need. The Model 4000 also has CE, CSA, and UL markings signifying it’s electrical safety and EMI/RFI code compliance. 

Superior Benefits
  • High sensitivity, accuracy and repeatability
  • No moving parts
  • High temperature performance
  • Wide range of processes analyzed
  • Simplified sampling process
  • Resistant to errors caused by contamination or bubbles
  • High temperature configurations (up to 538° C)
  • High pressure configurations (up to 2200 psig (15 MPag))
  • Sample wetted materials change per application
  • Built-in optical filter for on-line performance verification


  • Chlorine Purity/Chlorination Processes
  • Fluorination Processes
  • Phosgenation Processes
  • Impurity Monitoring
  • Pulp & Paper Bleaching
  • Color of diesel, gas, or wastewater
  • Toxic and Flammable gas/liquid analysis

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