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。
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：
本产品采用双硫腙分光比色方法测定，水样和调节剂混合后，镉在酸性环境和指示剂存在的情况下，与指示剂反应生成一种带色络合物，分析仪检测此颜色的变化，并把这种变化换算成镉值输出来。生成的带色络合物量相当于镉量。
本方法适用于镉在0-0.5mg/L,0-2mg/L范围内的废水。
Product Principle: This product is determined by the dithizone spectrophotometric method. After the water sample and the regulator are mixed, the cadmium reacts with the indicator to form a colored complex in the presence of an acidic environment and an indicator. The analyzer detects the color. Change and convert this change into a cadmium value output. The amount of colored complex formed is equivalent to the amount of cadmium. The method is applicable to wastewater with cadmium in the range of 0-0.5mg/L and 0-2mg/L. 技术参数：
序号
规格名称
技术规格参数
1
适用范围
本产品适用于总镉在0-0.5mg/L范围内的废水
2
测试方法
双硫腙分光光度法
3
测量量程
0-0.5mg/L、0-2mg/L
4
检测下限
0.001
5
分辨率
0.0001
6
准确度
±10%或±0.0025mg/L（二者中的较大值）
7
重复性
5%或0.001mg/L（二者中的较大值）
8
零点漂移
±0.05
9
量程漂移
±10%
10
测量周期
测试周期不小于20min
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
2路RS232数字输出，1路4-20mA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%V，50-60Hz，5A
21
尺寸
高1500×宽550×深450（mm）
Technical Parameters： 1.Scope of application：This product is suitable for wastewater with total cadmium in the range of 0-0.5mg/L. 2.Test Methods：Dithizone spectrophotometry 3.Measuring range：0-0.5mg/L, 0-2mg/L 4.Lower limit of detection：0.001 5.Resolution：0.0001 6.Accuracy：±10% or ±0.0025mg/L (the larger of the two) 7.Repeatability：5% or 0.001 mg/L (the larger of the two) 8.Zero drift：±0.05 9.Range drift：±10% 10.Measurement cycle：Minimum test period 20min 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 loss 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)