BOD rapid detector, medical chemical constant temperature direct reading water quality detector

Description :

　　Biochemical Oxygen Demand

　　JC-880type Product features of BOD analyzer:

　　The JC-880 BOD analyzer is a new type of instrument that uses the air pressure difference method to measure biochemical oxygen demand. It can accurately provide measurement results comparable to chemical dilution methods, with intuitive readings, clear biochemical reaction curves, and easy maintenance. It is an ideal tool for work analysis.

　　This instrument refers to GB7488-87 water quality five-day biochemical oxygen demand as the standard, and the five-day cultivation method is also known as the standard dilution method or dilution inoculation method. The principle is: after diluting the water sample, cultivate it at 20 ℃± 1 ℃ for 5 days, and calculate the dissolved oxygen content in the water sample before and after cultivation. The difference between the two is BOD5. Biochemical oxygen demand or biochemical oxygen consumption (generally referring to five-day chemical oxygen demand) is a comprehensive indicator of the content of aerobic pollutants such as organic matter in water. The total amount of dissolved oxygen consumed in water when organic matter is oxidized and decomposed by microorganisms, resulting in its inorganic or gaseous transformation. The higher its value, the more organic pollutants there are in the water, and the more severe the pollution.

　　Air pressure difference method

　　JC-880type BOD analyzerDetailed information:

　　The standard five-day dilution method for a BOD testing device that can operate unattended requires tedious sample preparation and operation to obtain reliable results. With a microcomputer controlled BOD testing device and simplified BOD method, you can quickly and correctly complete important tests. The entire device operation process can be unattended. Thanks to effective and easy use

　　The testing device uses a simple sample dilution method, making BOD measurement easy without the need for remote control facilities. The operator only needs to simply add the measured sample and BOD buffer to 6 BOD bottles, connect the bottles to the pressure sensor of the microprocessor control device, select a suitable range from the four ranges, and the BOD testing device can complete the subsequent tests. After the sample temperature stabilizes, the device begins to read the BOD value and store it in the instrument's memory. It is recorded every 15 minutes and can be tested for a period of 5 or 10 days.

　　JC-880type BOD analyzer

　　1. Measurement range: 0-1000 mg/L (dilution is required when BOD5 value exceeds the measurement range)

　　2. Simultaneously measure the number of samples: 6 samples per time, with an optional printer

　　3. Accuracy: Complies with the national standard GB7488-87

　　4. Display: The LCD monitor cyclically displays the BOD5 values and biochemical reaction curves of each sample.

　　5. Cultivation temperature: 20 ℃± 1 ℃

　　6. Power supply: AC 220V ± 22V 50Hz ± 0.5Hz

　　7. Power consumption: instrument ≤ 30W, constant temperature box ≤ 300W

　　8. The instrument can save the BOD5 values and biochemical reaction curves of the six samples analyzed last time

　　Five day cultivation method

　　JC-880type BOD analyzerCharacteristics of testing device

　　1. Automatic shutdown

　　2. Mercury free device ensures accurate BOD measurement

　　3. Automatically collect and store data

　　4. Convenient button interface

　　5. Simply press the button to print the display image directly

　　6. Input and output through RS-232 interface

　　7. Independent channel characteristics can measure six sample parameters separately

　　8. LCD graphic display continuously updates BOD test results and status

　　9. Electromagnetic stirrer continuously stirs to replenish oxygen into the sample

　　10. Sample dilution is easy and can measure high range BOD effectively and completely. During the BOD measurement process, the sensitive pressure probe of the BOD testing device continuously monitors the changes in oxygen consumption of the sample. The instrument directly measures the BODmg/L concentration without calculation or extrapolation. The use of pressure probes avoids the use of mercury pressure gauges and dissolved oxygen determination. The automatic stirring device continuously stirs to enhance oxygen transfer, and the mechanical device does not have a motor, reducing maintenance and achieving accurate results. The CO2 generated by the oxidation of organic matter is absorbed by lithium hydroxide contained in the bottle cap. Continuous graphical display of BOD testing device electronically storing measurement data and updating results. At any time during testing, the rate of BOD change can be detected on the LCD display screen. It can store 480 points of data during measurement. You can easily see the BOD curve of any sample bottle. By selecting the sample number with the button, the start date and current BOD value, current testing range, and real-time time can be displayed. Moving the cursor along the BOD curve will display the sample number, BOD value, and measurement duration.

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