1、 Instrument Introduction

The TC-301B portable COD ammonia nitrogen total phosphorus detector is a portable COD ammonia nitrogen total phosphorus detector developed and designed by our company in accordance with national standards such as "HJ/T399-2007 Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method", "HJ 535-2009 Determination of Ammonia Nitrogen in Water Quality - Nessler's reagent spectrophotometric method", and "GB/T 11893-1989 Determination of Total Phosphorus in Water Quality - Ammonium molybdate spectrophotometric method", as well as industry requirements. This COD ammonia nitrogen total phosphorus detector has PID automatic adjustment technology and functions such as curve self calibration and automatic zero adjustment, which enhances the accuracy and stability of the instrument; This portable COD ammonia nitrogen total phosphorus detector has a built-in lithium battery and can be used for on-site COD detection, ammonia nitrogen detection, and total phosphorus detection; In addition, the COD ammonia nitrogen total phosphorus detector is equipped with a micro thermal printer, which can directly print experimental data; Widely used in various industries such as laboratories, sewage treatment plants, universities, environmental monitoring departments, research institutions, etc. for COD detection, ammonia nitrogen detection, and total phosphorus detection.

2、 Functional features:

1The unique all-in-one design mode integrates digestion and measurement, making it easier to carry and measure;

2Built in high-power lithium battery DC power supply, capable of conducting multiple batches of experiments on site;

3The digestion and determination power supply systems are independently separated and do not interfere with each other, reducing external influence on the results;

4Dual display screens,LCDBacklight display, Chinese operation interface, concise and clear;

5The measurement system adopts advanced optical systems and cold light sources, with high measurement accuracy, small drift, and good stability;

6Introduction of digestion systemPIDAdjustment technology, high temperature control performance, good stability, and energy saving;

7The system has a built-in measurement curve self calibration function, which can automatically zero;

8Built in large capacity storage space, capable of storing 100 curves and30000Measurement results of strip time recording;

9, withRS232Data interface, which can be directly connected to a computer to upload experimental data;

10Built in micro thermal printer, capable of real-time printing of measurement data

11The integrated suitcase design makes the whole machine easy to carry, with built-in dual lithium batteries and no need for an additional power source for digestion, making it convenient to use;

12Using sealed digestion tubes, it has stronger resistance to chlorine interference;

13The instrument is equipped with dedicated data recording and processing software, which facilitates the storage, processing, and analysis of experimental data;

3、 Technical parameters

① COD parameters:

1. Determination method: spectrophotometric rapid catalytic method

2. Range: 5~150mg/L, 100~5000 mg/L (segmented measurement, expandable);

3. Measurement error: ≤ ±5 %

4. Range of photometric measurement: 0-2A

5. Wavelength accuracy: ± 1 nm;

6. Linear photometric measurement: ± 0.002 A;

7. Repeatability of photometric measurement: ± 0.005 A;

8. Accuracy of photometric measurement: ± 0.005 A;

9. Dissolution temperature: 165 ± 1 ℃;

10. Dissolution time: 15 minutes;

11. Measurement time: Simultaneously measure 4 water samples within 20 minutes;

12. Anti chlorine interference: [CL-] ＜1000mg/ L； [CL -]<4000mg/L (optional);

13. Temperature indication error: ＜ ±1.5℃；

14. Uniformity of temperature field: ≤ 1.5℃；

15. Error in digestion time indication: ≤ ±3%；

16. Curve parameters: 100 measurement curve parameters can be set;

17. Record storage: It can store 30000 measurement results.

18. Printing: Equipped with a built-in micro thermal printer, it can directly print experimental data;

19. Environmental temperature: (5~40) ℃; Environmental humidity: relative humidity<85% (no condensation);

20. Working power supply: AC220V ± 10%/50Hz; DC power supply can work continuously for 50 hours.

② Ammonia nitrogen parameters:

1. Determination method: Nessler's reagent spectrophotometric method

2. Range: 0.02-25-50mg/L (segmented measurement, expandable);

3. Measurement error: ≤ ±5 %

4. Range of photometric measurement: 0-2A

5. Wavelength accuracy: ± 1 nm;

6. Linear photometric measurement: ± 0.002 A;

7. Repeatability of photometric measurement: ± 0.005 A;

8. Accuracy of photometric measurement: ± 0.005 A;

9. Curve parameters: 100 measurement curve parameters can be set;

10. Calibration: Built in automatic calibration curve function;

11. Built in high-precision micro electronic clock with a monthly error of less than 8 seconds;

12. Record storage: store 30000 experimental results, power off data protection;

13. Printing: Equipped with a built-in micro thermal printer, it can directly print experimental data;

14. Communication method: RS232， Can be connected to a computer RS232/USB interface to upload experimental results;

15. Display: 250 * 130 LCD blue backlit display, fully Chinese operation interface;

16. Environmental temperature: (5~40) ℃; Environmental humidity: relative humidity<85% (no condensation);

17. Working power supply: AC220V ± 10%/50Hz, DC power supply can work continuously for 50 hours.

③ Total phosphorus parameters:

1. Determination method: Ammonium molybdate spectrophotometric method

2. Measurement range: 0.01~24mg/L (segmented measurement, expandable)

3. Measurement error: ≤ ±5 %

4. Range of photometric measurement: 0-2A

5. Wavelength accuracy: ± 1 nm;

6. Linear photometric measurement: ± 0.002 A;

7. Repeatability of photometric measurement: ± 0.005 A;

8. Accuracy of photometric measurement: ± 0.005 A;

9. Dissolution temperature and time: 120 ± 1 ℃; 30min

10. Measurement time: Dissolve 4 water samples simultaneously within 30 minutes;

11. Temperature indication error: ＜ ±1.5℃；

12. Uniformity of temperature field: ≤ 1.5℃；

13. Error in digestion time indication: ≤ ±3%；

14. Curve parameters: 100 measurement curve parameters can be set;

15. Record storage: capable of storing 30000 measurement results;

16. Printing: Equipped with a built-in micro thermal printer, it can directly print experimental data;

17. Environmental temperature: (5~40) ℃; Environmental humidity: relative humidity<85% (no condensation);

18. Working power supply: AC220V ± 10%/50Hz; DC power supply can work continuously for 50 hours.

4、 Product configuration