Brief introduction

The TC-200D digestion and determination integrated COD detector combines classic colorimetric methods with advanced computer technology, using microcomputer photoelectron colorimetric detection principles to replace traditional visual colorimetric methods, eliminating human errors and greatly improving measurement resolution. This product has the characteristics of automatic PID temperature control, dual LCD display, automatic zero adjustment, concentration direct reading, curve storage, and automatic printing. The instrument is easy to operate, and the human-machine interaction allows users to apply this product without complex professional knowledge.

2、 Functional features:

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

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

The determination and digestion systems are designed separately, and the operation process can be carried out separately without affecting each other;

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

The calibration mode from 1 o'clock to 7 o'clock automatically calculates slope, intercept, and correlation coefficient, with high measurement accuracy.

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

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

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

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

The instrument adopts a semiconductor cold light source emitter, a unique optical circuit design, strong anti-interference ability, high measurement data accuracy, good stability, and a light source lifespan of tens of thousands of hours.

Equipped with a data output interface, it can be connected to a computer to transmit measurement data to the computer;

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

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

3、 System parameters:

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

2. Light source system: dual wavelength (600nm ± 20nm and 440nm ± 20nm wavelength dual level light source)

3. Measurement range: 5~150~5000 mg/L

4. Measurement error: 5-150 mg/L, absolute error ≤± 5 mg/L; 150 mg/L~5000 mg/L, relative error ≤± 5%

5. Optical stability: ≤ 0.005A/20 min

6. Display sensitivity: 0.001A7, digestion temperature: 165 ± 1 ℃; Dissolving time: 10 minutes;

8. Anti chlorine interference: [CL-] ＜4000mg/ L；

9. Simultaneous digestion of sample quantity: ≤ 12;

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

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

12. Data storage: Each parameter can store 10000 pieces of measurement data;

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

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

15. Working power supply: AC 220V ± 10%/50Hz;