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YL 1040 COD online monitoring instrument
Instrument Overview: The Chemical Oxygen Demand (COD) online analyzer is a new generation of fully automatic COD online analyzer based on the Chinese
Product details
The Chemical Oxygen Demand (COD) online analyzer is a new generation of fully automatic COD online analyzer based on the Chinese national standard method - potassium dichromate oxidation method. This product is a maintenance free online monitoring instrument launched by Suzhou Juyang Environmental Protection Technology Co., Ltd. on the basis of years of research on water quality analysis products. Through the oxidation-reduction reaction inside the mixed solution formed by water sample, potassium dichromate, silver sulfate (as a catalyst to oxidize linear aliphatic compounds more fully) and concentrated sulfuric acid under high temperature and high pressure environment, Cr (VI) in the solution is reduced to Cr (III), resulting in a change in the color of the mixed solution. The degree of color change of the solution corresponds to the chemical oxygen demand (COD) of the water sample. The instrument can directly measure the COD value of the water sample through photoelectric colorimetry. The chloride ions in the water sample are the main interfering substances, and COD-1040 can eliminate the interference of chlorine by adding mercuric chloride to complex the chloride ions in the water sample.
·Instrument features·
▪ For the first time, software integration of COD high, medium, and low ranges has been achieved in one device, making it more convenient for users to use and maintain.
▪ More powerful data processing capabilities can automatically draw data curves for generating historical measurements.
▪ The use of a multi-channel selection liquid extraction device imported from abroad ensures high repeatability and accuracy of the measurement.
▪ It is possible to implement a user control platform, where users can install device control software (optional) on their computers to control and test instruments.
▪ It has printing function and can be connected to a printer (optional) to print the measured data in a timely manner.
▪ Adopting a 7-inch touch screen and a simple operating interface, it can be easy for users to learn, operate, and maintain.
▪ The ultra large data storage capacity enables the preservation of historical data for no less than 5 years (with a measurement interval of 1 time/2 hours). Greatly meeting the needs of customers.
▪ Automatic liquid leakage alarm function, when a reagent leakage occurs, the instrument will automatically alarm and prompt the user to perform maintenance.
▪ The quantitative use of signal automatic recognition function ensures high accuracy and repeatability of measurement.
▪ The maintenance of chemical reagents is simplified and convenient, with a monthly replacement of reagents, greatly reducing the maintenance workload for users.
▪ The pre-treatment adopts a pipeline type to ensure the authenticity of the water sample, ensuring that the sampling is not blocked and easy to adjust.
▪ It can achieve accurate measurement of COD containing 20000mg/L chloride ions with a measurement accuracy within 10%.
▪ One click upgrade of USB flash drive makes software updates easier.
·Technical parameters·
| test method | Potassium dichromate dissolution optical colorimetric method | self check | Self-monitoring of leaks; Instrument status self diagnosis |
| Range |
（10- 200）mg/L； （20- 1000）mg/L； （50- 10000） mgmg/L， Can expand the range according to customer needs |
Analog Output | 1-channel 0/4-20mA output (expandable to 2-channel) |
| limit of detection | 10mg/L (calibration curve method) | RELAY CONTROL | 2-channel 24V 1A relay high and low point control (instrument status can be defined) |
| Resolution | ＜ 1mg/L | Data Communication | RS485、RS232 |
| Accuracy | ＞ 100mg/L: ＜ 10% FS reading; ＜ 100mg/L: ＜ ±6mg/L | display screen | 7-inch color LCD display screen with a resolution of 800 * 480 |
| Reproducibility | <5% FS reading | Data Storage | Can save data for more than 5 years (with a measurement interval of 1 time/2 hours) |
| digestion time | 10 minutes, can be adjusted arbitrarily | Sample pH | 1 ~ 12 |
| monitoring mode | Continuous measurement, timed measurement, manual arbitrary measurement | Dissolving temperature | 175 ℃ |
| Correction interval | Any setting | operation temperature | +5 ~ +40℃ |
| Clean Interval | Any setting | Power Supply | Power supply (220 ± 10%) VAC; (50- 60)Hz |
| Maintenance Cycle | 6 months, next about 30 minutes | power waste | Power consumption less than 100 VA |
| MTBF | >720h/time | Dimensions | 1300mm×500mm×300mm （H×W×D） |
| Reagent consumption | 1 month/set |
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