Sunday, October 5, 2014

Analytical Measurement for Fluids and Processes

The need to perform chemical analysis on samples or sample streams exist in virtually all process systems, large and small. Whether a solid, liquid, or gas, the use of an analyzer to automatically provide detailed process information is required for product quality, manufacturing efficiency and safety. In many situations, sampling be done automatically.

In situ analyzer
In Situ Analyzer
Analyzers connected to a process and providing automatic sampling are called in situ analyzers. For these, the sensor is placed in the process vessel or stream of a flowing material to be analyzed.

A second online method, fluid sampling, passes a sample of the process directly into an analyzer where the handling pressure and temperate can be controlled. This is normally done for for fluids (liquids or gases). The sample stream can then be returned to the process or discarded. It is common for these type of analyzers to incorporate pressure reducing valves, small pumps and perhaps internal electric heating elements that prepare the samples for testing.

Substances are commonly analyzed for:
  • pH
  • Conductivity
  • Resistivity
  • Oxidation Reduction Potential (ORP, REDOX)
  • Dissolved Oxygen (DO) optical & amperometric
  • Turbidity
  • Free Residual Chlorine
  • Total Chlorine
  • Ion Selective Electrodes (pION) for Ammonium
  • Bromide
  • Cadmium
  • Calcium
  • Chloride
  • Copper
  • Cyanide
  • Fluoride
  • Nitrate
  • Potassium
  • Sodium and Sulfide
  • Aluminum
  • Ammonia
  • Chlorine
  • Chromium VI
  • Cyanide
  • Iron
  • Manganese
  • Nickel
  • Nitrite
  • Total Nitrogen
  • Phosphate
  • Total Phosphate
  • Silica
  • Sulfate
  • Sulfide
  • Zinc
Analyzers are used in many applications across such industries as chemical, food & beverage, oil & gas, mining, power generation, pulp & paper, semi-conductor, steel, water and wastewater.

If you need assistance with the selection of any kind of analyzer in the industrial, laboratory, semiconductor, life-sciences, or food processing industries, contact Belilove Company for expert consultation.