LAR’s total organic carbon analyzer is suitable for a variety of applications and types of water:
For safe operation in hazardous areas, there are different protection housings available:
Surface water and de-icing wastewater should be continuously monitored – from an ecological as well as economic point of view. By using reliable online measurment systems high wastewater charges can be avoided.
In the winter months airplanes, runways and landing
strips are de-iced with the help of de-icing agents. Chemicals such as glycol, acetates or formates are used which are additionally mixed with thickening agents in order to improve their adhesion to the surfaces. Finally, the de-icers have to stick to the surfaces to prevent the formation of new ice.
However, on precipitation this leads to contamination of the surface water and within the analyzer, these sticky (adhesive) substances may cause adhesions resulting in memory effects and/ or carry-over effects.
Hereby, residual traces of previous measurements falsify the results of the current measurement. Then the loads that fluctuate strongly depending on precipitation and use of de-icers, cannot be detected accurately. Therefore, within the analyzer, the sample should come into contact with wetted parts as little as possible.
Additionally, the analyzer‘s measurement range has to be wide enough in order to accurately determine the loads which are monitored by use of TOC as parameter. On one hand, the critical values for public discharge are very low and on the other the analyzer must be able to reliably measure high concentrations of up to 50,000 mg/l C.
For an exact TOC measurement all carbons bonds – incl. particles – must be reliably combusted. LAR’s unique robotic system is capable of transporting and measuring a high content of solid matter without any filtration of the sample. Additionally, LAR’s ultra high temperature method with combustion at 1,200°C guarantees the complete oxidation of the sample.
This analysis results in TRUE TOC.
The use of inert materials as well as a pump, which is installed downstream of the sample stream, prevent carryover and memory effects caused by absorption and adsorption. The automatic ranging feature ensures reliable measurements between 0.1..50,000 mg/l C without dilution or pretreatment of samples. This means, fluctuating loads and adhesive samples are easily analysed.