Germany Luo Weibang ET99724A type BOD Tester Instructions

I. Introduction: Biochemical Oxygen Demand (BOD) means that under certain conditions, the microbial decomposition of some present in water can be oxidized organic substances in particular the amount of dissolved oxygen consumed in the process, is an important measure of the quality of organic water pollution indicators. Lovibond introduced ET99724 BOD analyzer is widely used in surface water, sewage and industrial effluent BOD of measurement for sewage treatment plants, all kinds of high-tech biological laboratory, environmental monitoring and analysis of the test center. Follow the philosophy of environmental protection, the use of mercury-free measurements. User-friendly button interface makes the instrument very simple. You can set the culture period (1-28 days) in accordance with the actual demand. Using magnetic stirring system to ensure the uniformity of the sample in the training process. The instrument has RS232 data interface, the software can be installed without any data transmission. Second, measuring principle: the new Lovibond ET99724 (OxiDirect BOD) measuring system sensing system has 6 or 12 test points, a unique breathing measuring principle, based on the measurement of the oxygen-enriched air or seal container in the amount of oxygen consumed by microorganisms (stable under the temperature and air flow conditions), carbon dioxide and sealed container bacterial metabolism in the chemical reaction of potassium hydroxide solution, while maintaining the pressure of breathing while continuously updating the number of oxygen consumption due to the pressure changes caused. BOD sensor using patented technology can be easily and accurately performed BOD measurement, BOD value will mg / L units displayed directly on the instrument screen. Third, a variety of cycle setting BOD of the sample depends on the content of organic matter. ET99724 maximum range of 0-4000mg / l, the user can select the measurement range sample and the corresponding sample size depending on the water. According to the experimental needs, the cycle can be selected in 1-28 days. If the culture period is one day, the data storage interval is 1 hour, if the period is 2 days, data storage interval of 2 hours, at 3-28 days of culture period, the data storage interval is 1 day. The current measured value and the stored value can always see access to. Four, RS232 data interface microcomputer Lovibond BOD measuring instrument with RS232 interface for data transfer, can be easily connected to the computer for data transmission analysis and processing, real-time data storage and recall. This feature will allow you to experiment analysis simple and systematic. Users can directly access to detailed information including measurement data, including storage, and a variety of related operations, in order to achieve the system log analysis storage and printing purposes. Fifth, the ultra-thin high-performance magnetic stirring system magnetic stirring system is microprocessor controlled Lovibond patented technology developed by a magnetic stirrer, with no wear and maintenance-free features; a magnetic stir bar speed can be uniformly increased (up to the maximum speed) and slow, so center left stirring stirring rod will quickly return stirred center to ensure that the concentration of the stir bar. Ultra-thin high-performance magnetic stirring system operation without maintenance (no need to replace the drive belt or damaged due to excessive use of the drive motor).