WTW OxiTop® Control A6 / A12

WTW OxiTop® Control A6 / A12

The WTW OxiTop® Control A6 / A12 was developed for laboratories and industrial environments to perform high-precision measurements of biochemical oxygen demand (BOD) and other respiratory parameters. With its compact dimensions and ease of use, it is particularly attractive in confined workspaces or when used in different locations. Compared to similar systems, this device impresses with its quick installation, high measurement accuracy and extensive setting options. This allows it to cover a wide range of applications in which reliable and reproducible results are crucial. High-precision measurements and range of functions This powerful instrument is equipped with state-of-the-art sensor technology and allows the reliable determination of a wide range of parameters. Whether for routine applications, special measurements or the evaluation of series measurements - the controller and the measuring heads work together perfectly. The system operates manometrically using a pressure sensor and covers a wide pressure range. Its sophisticated measurement concept allows both the BOD in water and respiratory activities in the soil or during biogas determination to be measured accurately. Other important features include:

- Manometric measurement using precise pressure sensors - Measuring range from 500 to 1350 hPa for a wide range of applications - Accuracy of ±1 % of the measured value ±1 hPa - Freely definable volumes for special BOD measurements up to 400,000 mg/l - IR and RS-232 interface for easy evaluation and data transfer
- Energy-saving operation thanks to battery power supply (controller: 3x AA, measuring head: 2x CR2430)
- Robust construction for operating temperatures between +5 °C and +40 °C

In addition, an optional 1,000 ml container for larger sample quantities and a 250 ml vessel with adapter offer flexibility in sample preparation. Thanks to the modular design, intermediate values can also be recorded and read out over longer periods (0.5 hours to 99 days). This allows meaningful trend analyses and accurate documentation of processes in research and practice.

Standards and certifications

In order to meet the high demands of professional users, the device complies with current DIN and CE standards, so that it can be used safely and reliably for a wide range of applications. It is manufactured to strict quality standards, ensuring consistent functional reliability. Users can therefore rest assured that the instrument complies with the relevant standards and guidelines and delivers reliable results.

Typical areas of application

Professional laboratories and industrial companies benefit from the flexibility of the system and its numerous application possibilities. It proves to be an indispensable tool in the following scenarios in particular:

- Environmental and water laboratories: Classic BOD determination of samples in rivers, lakes or groundwater to monitor water quality. - Wastewater treatment: Monitoring of purification processes in sewage treatment plants to investigate the efficiency of sludge biology. - Research institutions: Studies on soil respiration in agricultural or ecological investigations, including the effect of nitrification inhibitors where applicable.
- Biogas plants: Determination of gas development and monitoring of the fermentation process during the fermentation of various substrates.

The freely definable measurement volumes and the pressure mode, in which up to 10 intermediate values can be recorded, are particularly helpful. This makes it easy to manage even extensive test series, which is essential for precise process control.

FAQs

How does data transfer to the PC work?

The measurement data can be easily transferred to a PC via an IR interface or RS-232 interface. This allows both older and more modern PC systems to communicate with the controller. Suitable evaluation software then facilitates the analysis and archiving of the measurement results.

What batteries are used?

The controller is powered by three AA alkaline batteries (1.5 V). The measuring heads use two CR2430 lithium batteries (280 mAh). This power supply ensures reliable operation for longer measurement periods.

How often does the device need to be serviced?

Due to its stable construction and high-quality components, only minimal maintenance is required. Regular checks for external damage, replacement of batteries as needed, and adherence to storage temperatures (-25 to +65 °C) ensure a long service life for the device.

Can different sample volumes be measured simultaneously?

Yes, the instrument can accommodate different volumes in parallel test series. In special BOD measurements in particular, variations of up to 400,000 mg/l BOD are possible, enabling researchers and laboratory technicians to compare experiments under identical conditions in a differentiated manner.

Conclusion

This A6/A12 model combines high measurement accuracy, flexibility and a robust design that are indispensable in demanding laboratory and industrial environments. With its freely definable volumes, large measuring range and ease of use, it covers a wide range of requirements. Compliant with CE and DIN standards, it ensures reliable and reproducible results that provide an optimal basis for decision-making in research and practice. Anyone looking for a durable and user-friendly solution for BOD and other respiratory analyses will find a sophisticated device that impresses with its functionality.