1、 Product Overview

This product combines classic colorimetric methods with computer technology, using microcomputer optoelectronic colorimetric detection principles to replace traditional visual colorimetric methods, greatly improving measurement resolution. The automation of the measurement process has been achieved. It is widely used in the monitoring of sewage outlets of factories and mining enterprises, import and export monitoring of urban sewage treatment plants, water quality monitoring of Rivers and Lakes, and process control of sewage treatment facilities.

2、 Performance characteristics

1. Dual LCD display, large screen LCD backlight display, 240 * 128 dot matrix, Chinese operation interface, user-friendly program design.

2. The measurement range is wide and can be switched according to the actual situation of the water sample.

3. The measurement and digestion systems are designed separately, with power supply control, and the operation process can be carried out separately without affecting each other;

4. Automatic constant temperature control system, PID regulation technology, constant temperature and high accuracy during the digestion process;

Calibration mode from 5.1 to 7 o'clock, automatically calculates slope, intercept, and correlation coefficient, with high measurement accuracy.

6. Intelligent design for fault self diagnosis makes instrument management and maintenance simple and convenient.

7. The instrument has a built-in real-time clock, and each measurement record has a measurement timestamp for easy statistics and queries;

8. Large capacity data storage with power-off protection design ensures that the instrument is not damaged and data records are not lost.

9. Strong anti-interference ability, suitable for industrial sites, and can be widely used for monitoring surface water and pollution sources.

10. The instrument adopts a semiconductor cold light source emitter, optical circuit design, strong anti-interference ability, high measurement data accuracy, good stability, and long light source life.

11. It has a data output interface that can be connected to a computer to transmit measurement data to the computer;

12. The instrument comes with a thermal printer that can directly print measurement data and historical data;

13. Handheld box design, lightweight, aesthetically pleasing, and easy to carry;

14. The instrument is equipped with a built-in DC power supply and lithium battery power supply, which can achieve heating, digestion, and colorimetric determination of multiple batches of water samples;

15. Low reagent usage, low operating costs, and strong anti-interference ability.

3、 Technical parameters

1. Simultaneous digestion of sample quantity: ≤ 4;

2. Dissolving temperature control range: ≤ 200 ℃, time control range ≤ 999 minutes, automatic timing;

3. Curve parameters: 100 measurement curve parameters can be set for each indicator;

4. Data storage: capable of storing 30000 measurement data;

5. Data calibration: 1-7 point calibration mode, automatically correcting curve values;

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

7. Working power supply: AC 220V ± 10%/50Hz; DC+16V lithium battery;

COD index:

① Measurement method: Rapid catalytic method (chromium method);

② COD high and low range dual wavelength measurement: 5-150mg/L low wavelength; 100~10000mg/L, high wavelength;

③ Measurement range: 5~10000 mg/L (segmented or diluted measurement when>1000 mg/L);

④ Measurement error: 5-100 mg/L, absolute error ≤± 5 mg/L; 100 mg/L~10000 mg/L, relative error ≤± 5%

⑤ Dissolving temperature: 165 ± 1 ℃; Dissolving time: 15 minutes;

⑥ Anti chlorine interference: [CL-] ＜1000mg/ L； (>1000mg/L dilution determination);

Ammonia nitrogen index:

① Measurement method: Nessler's colorimetric method;

② Measurement range: 0.01mg/L to 50mg/L;

③ Measurement error: ≤ ±5 %

Total phosphorus index:

① Measurement method: Ammonium molybdate spectrophotometric method;

② Measurement range: 0.01mg/L to 24mg/L; Measurement error: ≤ ±5 %；

③ Dissolving temperature: 120 ± 1 ℃; Dissolving time: 30 minutes;

Total nitrogen index:

① Measurement method: photometric colorimetric method;

② Measurement range: ≤ 100mg/L； Measurement error: ≤ ±5 %

③ Dissolving temperature: 125 ± 1 ℃; Dissolving time: 30 minutes

Note: This product can be used as a 2-in-1 or 3-in-1 detector that combines COD, ammonia nitrogen, total phosphorus, and total nitrogen indicators