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QD-BOD5 BOD analyzer
This instrument is designed based on the principle of differential pressure measurement, and BOD5, BOD7, and BOD10 can be selected. Easy to operate, f
Product details
Working principle
This instrument is designed based on the principle of differential pressure measurement, and simulates the natural process of organic matter degradation: the oxygen in the air above the test bottle continuously supplements the dissolved oxygen consumed in the water, and the CO2 generated during the organic matter degradation process is absorbed by potassium hydroxide in the sealed lid. The pressure sensor constantly monitors the pressure changes in the sample bottle. Establish a correlation between biochemical oxygen demand (BOD) (corresponding to the amount of oxygen consumed in the test bottle) and gas pressure, process this correlation through instruments, and directly display the value of biochemical oxygen demand (BOD) on the instrument screen.
purpose
Used in the laboratory to measure the five-day biochemical oxygen demand (BOD5) value of environmental water samples. The instrument adopts the principle of respiration method (pressure difference method), and the sample does not need to be diluted or aerated for direct measurement. Real time monitoring of sample BOD changes.
Functional Features
LCD digital display and real-time display of BOD trend curve
• With print output function
• Can be connected to a computer through a USB interface
• Breathing method, mercury free pressure sensor measurement, direct reading of BOD value
Real time clock display
• Automatic collection and data storage
• Draw the BOD process curve for users to view
• Can connect to a computer to print process curves
System parameters and experimental data will not be lost in case of power failure
• Humanized display on LCD interface, easier to learn and understand operation
The test time is 5, 7, and 10 days, which can be set by pressing the button
Store measurement data and update results. At any time during testing, the rate of BOD change can be observed on the LCD display screen. It can store 480 data points during measurement.
Dual interface display in both Chinese and English
• Tested in compliance with environmental protection standard HJ 505-2009
Main specifications and parameters
| range |
0 to 35, 0 to 70, 0 to 350, 0 to 700 mg/L (no dilution required) |
|
700 to 4000 mg/L requires dilution. | |
| size |
31 x 30 x 14 cm(Length x Width x Height) |
| capacity |
500ml |
| weight | 4.5Kg |
| Usage temperature |
20℃±1℃ |
| accuracy | ± 5% (tested 44 standard solutions of 150 mg/L glucose and glutamic acid, within a 95% confidence interval)The average BOD is 235 mg/L (distributed between 224 and 246 mg/L) |
|
repeatability |
≤5% |
| resolution |
0.1 mg/L (0 to 35, 0 to 70) |
| 1mg/L (0 to 350, 0 to 700) |
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