Sample Extraction and Conditioning System or Membrane based Sample Conditioning System 

“Membrane based sample conditioning system is for dry sample extraction. This is needed where highly soluble and corrosive acidic gases are present in the sample to be extracted. It reduces the dust load and moisture content in the sample to transport it to CEMS without a heated sampling line. This reduces the running cost of the overall system. The system is specially designed for extracting highly corrosive gases like HBr, F₂, HF, HCl and Cl₂ from the stack. The system can be directly mounted on the stack with the flange connections and is used where the stack temperatures are <100°C and where very low dewpoints are necessary. The power required to run the system and the necessary communication is established from the CEMS through a cable running between them. “ 

The Uniphos Peltier Cooled Probe is an advanced sample conditioning system to draw a gas sample from an emissions stack being monitored. Sample extraction and conditioning is an important part of all Continuous Emission Monitoring Systems (CEMS) and includes extracting the sample from the stack and maintaining the dew point of the sample at such a level that there is no condensation at any point until the concentration of the sample is measured. This ensures proper transport and measurement of sample concentrations.  

The Peltier Cooled Probe is a unique product which is based on an advanced hot and dry extractive technique where the sample is extracted and conditioned on the stack and transported to the analyzer using a non-heated sampling tube at ambient temperature. It consists of a stack mountable system which includes a heated probe, a short, heated sampling line and a Peltier cooled sample conditioning module, all integrated in a single enclosure. Using a Peltier Cooled Probe reduces the length of the heated sampling line to less than half a meter, bringing down the operating cost many times. 

The Uniphos Simple Sampling probe is tailor made for situations where temperature of the stack is not high, and condensation does not happen while extracting the sample from the stack. The dust filter present in the probe ensures that no dust is passed through the line.  User-Settable purging facility enables automatic purging of the probe at pre-defined time intervals.  

The TDLAS (Tunable Diode Laser Absorption Spectroscopy) technique in combination with WMS (wavelength modulation spectroscopy) is highly sensitive and specific method for detection of gases and is an excellent technique for concentration measurement of gaseous species in scientific as well as industrial applications. Uniphos TDLAS based gas analyzer are exceptionally reliable for trace level detection of atmospheric pollutants like HF, HCl, NH₃ etc. Our TDLAS based analyser provides an accurate and real time measurements of these atmospheric pollutants from ppm levels to percentage levels.