1、 Overview

HJ-200S typeCOD rapid analyzerIt is a scientific instrument specialized in detecting COD content in water. The instrument mainly consists of two parts: the measuring instrument host and the digestion device. The instrument adopts a multi-point calibration method to ensure the accuracy and reliability of the measurement. The water sample that has been rapidly digested for 15 minutes can be directly placed into the host for measurement, and the COD concentration can be directly read. This instrument greatly simplifies the COD experiment time and is a reliable assistant for scientific researchers.COD detectorWidely used in various sewage treatment plants, enterprise laboratories, chemical plants, universities, environmental protection bureaus, monitoring stations and other units, receiving good feedback.

2、 Main features

1. The digestion part is automatically controlled by constant temperature and PID regulation technology, displaying the current temperature, set temperature, digestion time, and remaining time in real time.

2. Large screen LCD backlit display, fully Chinese operation interface, improving artificial intelligence

3. COD dual wavelength measurement, wide measurement range, can switch range by oneself, supports self calibration.

4. Strong resistance to chlorine interference, professional light source system, high accuracy of measurement results

5. Can save data at any time, can store 10000 experimental data

6. Equipped with RS232 interface and an online CD, it can be transferred to a computer at any time

7. Adopting imported cold light source, with a service life of up to 100000 hours

8. Support customers to customize curves themselves, change and save curves at any time, and can store 100 curves in memory

9. COD measurement results are displayed directly and can be read quickly

10. Optional printer to print experimental data at any time for easy recording

3、 Technical parameters

Measurement project	COD
Instrument model	HJ-200S
Execution standards	HJ/T 399-2017 Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion Spectrometric Method
measuring range	Low wavelength: 5-150 mg/L; High wavelength: 150-10000mg/l (segmented measurement)
accuracy	COD≤100mg/L, Error ≤ ± 5mg/l COD＞100mg/L, Error ≤± 5%
stability	0.005A
Dissolving temperature and time	165 ± 1℃； 15 minutes
Anti chlorine interference	[CL-] ＜1000mg/ L； [CL -]<4000mg/L (optional)
Measurement time	20 minutes
Batch processing sample quantity	12 of them
Curve Number	100 items
Store data	10000 pieces
Working power supply	AC220V±10% / 50Hz；
work environment	Temperature: (5~40) ℃; Environmental humidity: Relative humidity<85% (no condensation)

4、 Product configuration

1. One measuring instrument host

2. One multifunctional digestion device

3. A box of colorimetric dishes

4. 12 digestion tubes

5. One test tube rack and one colorimetric dish rack each

6. One set of specialized reagents and one set of standard solution

7. One protective cover

8. Two power cords

9. One RS232 online cable

10. One copy each of the certificate of conformity, warranty card, and instruction manual