产品详情
  • 产品名称:COD水质在线监测仪 COD Water Quality Online Monitor

  • 产品型号:AG-C07
  • 产品厂商:国产 Made in China
  • 产品文档:
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简单介绍:
化学需氧量(又称COD)是指在一定条件下,用强氧化剂将水样中有机物和无机还原性物质氧化时所消耗氧化剂相对应氧的质量浓度. The concentration of oxygen corresponding to the oxidant consumed by the oxidation of organic matter and inorganic reducing substances in water samples under strong conditions.
详情介绍:

    化学需氧量(又称COD)是指在一定条件下,用强氧化剂将水样中有机物和无机还原性物质氧化时所消耗氧化剂相对应氧的质量浓度,COD也是反映水体受有机物和无机还原性物质污染程度的重要指标。

    该分析仪能够根据现场设定长期无人值守自动连续工作,广泛适用于工业污染源排放废水、工业过程工艺废水、工业污水处理厂污水、市政污水处理厂污水等场合。根据现场测试工况的复杂程度,可选配相应的预处理系统,以保证测试过程可靠、测试结果准确,充分满足不同场合现场需求。

   Chemical oxygen demand (also known as COD) refers to the concentration of oxygen corresponding to the oxidant consumed by the oxidation of organic matter and inorganic reducing substances in water samples under strong conditions. COD also reflects the organic matter and inorganic reduction of water. An important indicator of the degree of contamination of sexual materials.
   The analyzer can automatically and continuously work according to the on-site setting for long-term unattended operation, and is widely used in industrial waste water discharge, industrial process wastewater, industrial sewage treatment plant sewage, municipal sewage treatment plant sewage and other occasions. According to the complexity of the field test conditions, the corresponding pre-treatment system can be selected to ensure the test process is reliable and the test results are accurate, which fully meets the on-site requirements of different occasions.

产品原理:

     水样、重铬酸钾消解溶液、硫酸银溶液(硫酸银作为催化剂加入可以更有效地氧化直链脂肪化合物)以及浓硫酸的混合液加热至175℃,重铬酸离子氧化溶液中的有机物后颜色会发生变化,分析仪检测此颜色的变化,并把这种变化换算成COD值输出出来,消耗的重铬酸离子量相当于可氧化的有机物量,即COD。

Product Principle:

Water sample, potassium dichromate digestion solution, silver sulfate solution (silver sulfate is added as a catalyst to oxidize linear fatty compounds more efficiently) and concentrated sulfuric acid mixture is heated to 175 °C, and the organic acid in the dichromate ion oxidizing solution The color changes, the analyzer detects the change in the color, and converts the change into a COD value. The amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter, or COD.

技术参数:

序号

规格名称

技术规格参数

1

适用范围

本产品适用于化学需氧量在10-5000mg/L范围内且氯化物浓度低于2.5g/L Cl-的废水,根据客户实际需求,可扩展适用于氯化物浓度低于20g/L Cl-的废水

2

测试方法

重铬酸钾高温消解,比色测定

3

测量量程

10-5000mg/L

4

检测下限

3

5

分辨率

0.1

6

准确度

±10%或±8mg/L(二者中的较大值)

7

重复性

10%6mg/L(二者中的较大值)

8

零点漂移

±5mg/L

9

量程漂移

±10%

10

测量周期

测试周期大于20min,根据实际水样,消解时间5-120min可设置

11

采样周期

时间间隔(可调)、整点或触发测量模式,可设置

12

校准周期

自动校准(1-99天可调),根据实际水样,手工校准可设置

13

维护周期

维护间隔大于1月,每次约30min

14

人机操作

触摸屏显示及指令输入

15

自检保护

仪器工作状态自我诊断,异常或断电后不会丢失数据异常复位或断电来电后,仪器自动排除残留反应物并自动恢复工作

16

数据存储

不低于半年数据存储

17

输入接口

开关量

18

输出接口

2RS232数字输出,14-20mA模拟输出

19

工作环境

室内工作,建议温度5-28℃,湿度≤90%(不结露)

20

电源与功耗

AC230±10%V50-60Hz5A

21

尺寸

1500×宽550×深450mm


Technical Parameters:

1.Scope of application: This product is suitable for wastewater with chemical oxygen demand in the range of           10-5000mg/L and chloride concentration less than 2.5g/L Cl-. It can be extended to chloride concentration below     20g/L Cl- according to customer's actual demand. Waste water

2.Test Methods: High temperature digestion of potassium dichromate, colorimetric determination

3.Measuring range: 10-5000mg/L

4.Lower limit of detection: 3

5.Resolution: 0.1

6.Accuracy: ±10% or ±8mg/L (the larger of the two)

7.Repeatability: 10% or 6mg/L (the larger of the two)

8.Zero drift: ±5mg/L

9.Range drift: ±10%

10.Measurement cycle:The minimum test period is 20min. According to the actual water sample, the digestion time        can be set from 5 to 120 minutes.   

11.The sampling period: Interval (adjustable), hour or trigger measurement mode, can be set

12.Calibration cycle: Automatic calibration (1-99 days adjustable), according to the actual water sample, manual        calibration can be set

13.Maintenance cycle: Maintenance interval is greater than 1 month, about 30min each time

14.Man-machine operation: Touch screen display and command input

15.Self-test protection: Self-diagnosis of the working state of the instrument, no data will be lost after abnormal    or power failure; after abnormal reset or power-off call, the instrument automatically removes residual reactants    and automatically resumes work.

16.Data storage: Not less than half a year of data storage

17.Input interface: Switch

18.Output Interface: 2-way RS232 digital output, 1 channel 4-20mA analog output

19.Working environment: Indoor work, recommended temperature 5-28°C, humidity ≤90% (no condensation)

20.Power and power consumption: AC230±10%V, 50-60Hz, 5A

21.Size: Height 1500 × width 550 × depth 450 (mm)

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