1、 Product Introduction

This instrument is designed based on the principle of differential pressure measurement, and simulates the degradation process of organic matter in nature: the oxygen in the air above the test bottle continuously supplements the dissolved oxygen consumed in the water, and the CO2 generated during the degradation of organic matter is absorbed by potassium hydroxide in the sealed lid. The pressure sensor monitors the pressure changes in the sample bottle in real time. 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.

2、 Product parameters

1. Range: 0-35, 0-70, 0-350, 0-700mg/L (700-4000mg/L requires dilution)
2. Size (length * width * height): 31 * 30 * 14cm
3. Bottle capacity: 500mL
4. Test quantity: 6
5. Weight: 4.5Kg
6. Test temperature: 20 ℃± 1 ℃
7. Accuracy: ± 5%
8. Repeatability: ≤ 5%
9. Resolution: 0.1mg/L (0-35, 0-70) 1mg/L (0-350, 0-700)

3、 Product Features

1. Real time display of BOD trend curve;
2. Can be connected to a computer through a USB interface;
3. Mercury free equipment ensures accurate and safe BOD measurement;
4. Real time clock display;
5. Experiments have been conducted to maintain incomplete data due to power outages in various areas;
6. Automatic collection and data storage;
7. Describe the BOD process curve for users to view and analyze;
8. Humanized display on LCD interface, easier to learn and understand operation;
9. The experimental time is 5, 7, or 10 days, which can be chosen by oneself;
10. Store measurement data and update results. At any time during testing, the rate of BOD change can be observed on the LCD display screen. Can store 480 data points during measurement;
11. Tested in accordance with the environmental maintenance standard HJ 505-2009.

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