TOC Analyser
Continuous monitoring of total organic carbon
Organic compound - present in all types of water... Organic compounds are found almost in all types of water - from natural and treated drinking water to process water, cooling water, and water used in pharmaceuticals and food production.
...and a challenge in many industrial processes. Too much organic contamination in the water interferes with many industrial processes. For example, an excess of organic matter can foster microbiological growth or, when disinfecting drinking water, encourage the presence of undesirable byproducts. On the other hand, there are numerous processes in the chemical and galvanic industries in which water is mixed with organic additives. In order to control and monitor these processes, it is important to measure the amount of organic substances in water.
TOC - an important sum parameter. Given the huge numbers of organic compounds in water, it is practically impossible to identify and measure each on individually. Instead of analysing individual substances, a fast and precise way to rate water quality is to measure sum parameters - this is especially helpful in the case of online monitoring. Measuring the total organic crabon (TOC) is paticuarly important for the evalution of the total organic contents. The advantages of TOC analysis include the high levels of accuracy and prescision that can be achieved, even with small sample amounts, plus the ease with which the process can be automated.
TOC Analyser
Measures total organic carbon in liquid samples using the method of UV persulfate oxidation with subsequent carbon dioxide detection by nondispersive infrared absorption.
Highlights
- Measure TOC in liquid samples ranging from 0-5mg/L to 50,000 mg/L.
- Conforms to EPA, DIN, CE, ASTM and NAMUR regulations and meets the requirements of ISO and EN directives.
- Dual compartment enclosure with two seperate compartments to seperate the electronics from the wet part.
- Valve-free sample line means samples are taken and reagents are added via peristaltic pumps
- Safe operation in case of sample loss with automatic standby mode
- Digital flowmeter unlike traditional analysers, the carrier gas flow is controlled digitally
- Integrated gas management means no need for external air treatment or a compressed air supply
- Automatic ZEROGAS checks save time and improve safety
- Long lasting design and build quality combined with resistance to corrosive liquids
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In many industry sectors, measuring and checking TOC is an essential factor in making processes more efficient and reducing costs.
Monitoring TOC is a key part of the correct treatment of wastewater and is also crucial in ensuring compliance with the organic load limits involved in wastewater treatment.
In the field of power plant analysis, the TOC value provides information on the quality of the boiler feed water. Following purification of condensates, the TOC value is used to determine whether the condensates can be fed back into the water-steam circuit.
Run-off and storm water from chemical and petrochemical plants as well as airports can contain high concentrations of organic compounds. Monitoring TOC value at collection points makes it easier to decide whether the streams require post-treatment or whether they can be fed into the outfall or the communal sewage system.
| Indsutry Sectors: | Sample types: |
|---|---|
| Chemicals | Drinking water |
| Pharmaceuticals | Surface water |
| Food & beverage | Process control |
| Automotive | Boiler feed water/condensate |
| Oil & gas | Cooling water |
| Power & energy | Run-off/strom water |
| Petrochemicals | Wastewater |
| Pulp & paper | |
| Airports | |
| Environmental monitoring |
The user interface is a touchscreen located on the front of the analyser. All output/input data, status information, alarms, and fault conditions are shown. Simply pressing the touchscreen buttons gives access to commands and settings. Obtain the status of the analyser, sample and relay; carrier gas flow; reagent fill levels, and measured CO2 concentrations, and last validation result. An intergrated data logger gives access to results from the last 30 days. The user can access the carrier gas (ZEROGAS), liquid zero, and calibration functions. The timing page can also be called up to set automatic checks on the ZEROGAS, control the extra relay, set conditioning parameters, and more.