1、 Product Overview

The KD-40 multi parameter water quality detector has the characteristics of cold light source, Chinese character display, printing, computer connection, 100 curves, real-time clock, automatic calibration, etc. The design performance of this instrument meets the requirements of national environmental protection industry standards. At the same time, it combines traditional methods with advanced computer technology, applies microcomputer optoelectronic colorimetric detection principles to replace traditional methods, eliminates human errors, greatly improves measurement resolution, and achieves automation of the measurement process. It can be widely applied to the monitoring of sewage outlets of factories and mining enterprises, the monitoring of imports and exports of urban sewage treatment plants, the monitoring of water quality of Rivers and Lakes, and the process control of sewage treatment facilities. It can be widely applied to the detection of wastewater from various industries (industrial wastewater, urban sewage, domestic sewage, and surface water in rivers and lakes).

2、 Performance characteristics

1. Large screen LCD backlit display, pure Chinese operation interface, user-friendly program design.

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

3. Large capacity data storage with power-off protection design ensures that the instrument is not damaged and data records are never lost.

4. Calibration mode from 1 o'clock to 7 o'clock, automatically calculating slope, intercept, and correlation coefficient, with high measurement accuracy.

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

6. Strong anti-interference ability, suitable for industrial sites.

7. It can be widely used for monitoring surface water and pollution sources.

8. Adopting a unique semiconductor cold light source emitter, the lifespan of the light source can reach tens of thousands of hours.

9. Can connect to a computer to export measurement data, and comes with a built-in printer to automatically print measurement data.

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

3、 Technical indicators

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

2. Calibration: 1-7 point calibration mode, automatically correcting curve values;

3. Clock: Built in real-time clock, with a monthly cumulative error of less than 10 seconds;

4. Record storage: can store 10000 measurement results, data will never be lost in case of power failure;

5. Printing: Comes with a built-in printer to print measurement results at any time;

6. Communication method: RS232， The measurement results can be uploaded to a computer for easy statistical analysis by users;

7. Display: 240 * 128 large blue backlit display, Chinese operation interface;

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

9. Dimensions: 320 * 240 * 110mm;

10. Working power supply: AC220V ± 10%/50Hz.

COD index

1. Determination method: Rapid catalytic method (chromium method);

2. Measurement range: 5-10000 mg/L (segmented or diluted measurement when>1000 mg/L);

3. Dual wavelength measurement: 5-150mg/L low wavelength; 100-1000mg/L, high wavelength;

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

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

6. Anti chlorine interference: [CL -]<1000mg/L (>1000mg/L can be diluted for measurement).

Ammonia nitrogen index

1. Determination method: Nessler's colorimetric method;

2. Measurement range: 0-50mg/L;

3. Measurement error: ≤ ± 5%.

Total phosphorus index

1. Determination method: ammonium molybdate spectrophotometric method;

2. Measurement range: 0.01mg/L to 24mg/L;

3. Measurement error: ≤ ±5%；

4. Dissolution temperature: 120 ± 1 ℃; Dissolving time: 30 minutes.

Total nitrogen index

1. Measurement method: photometric colorimetric method;

2. Measurement range: ≤ 100mg/L；

3. Measurement error: ≤ ±5%；

4. Dissolution temperature: 125 ± 1 ℃; Dissolving time: 30 minutes; Automatic timing.

Turbidity index

1. Measurement method: spectrophotometric method;

2. Measurement range: 0-400 NTU (segmented measurement when>100 NTU, dilution measurement for excess range);

3. Measurement error: ≤± 5%.