PhotoTek 6000-NH3-N氨氮在线分析仪（气敏电极法）
氨氮在线自动监测仪式一款以气敏电极法为监测原理，可以在线连续测定、实时读取、存储和分析，可广泛应用于地表水、饮用水或水源地、以及一般工业污水和城镇污水厂的在线监测。
PhotoTek 6500具有一体化电极；在实际测试中，稳定性好，试剂用量小，维护量小等特点
典型应用
广泛应用于地表水（河流、湖泊、水库）、饮用水源地、自来水管网等的水质自动连续监测，服务于环保部门、水务部门、大中型企业等。
产品特点
采用氨气敏电极标准加入法，方便质量控制，即使氨氮含量很低也可实现准确测量；
试剂用量少，维护量小，价格和维护费用低；
正面液路维护，具有自动采样和自清洗功能；
精选中文界面，使用简单，操作方便；
对所监测参数设置核查值，准确核对每一个测量数据，即时了解仪器运行状况，对检测数据的有效性作出判断；
功能可扩展（在仪器内增加对进样预处理、排除干扰的配件或预留配件位置），保证仪器可以长期正常稳定地运行；
独立的存储功能，存储数据安全可靠；
数据传输可靠，集成多种传输手段，具备4-20mA(四通道)模拟输出，8个DI数字量输入及RS485/232数据接口, 同时支持MODBUS 数据处理方式访问和控制机器；
测量范围大，可自动切换量程，拓宽了仪器的适用范围，可以用在地表水，饮用水，也可以应用于污染源等在线监测上；
检测原理
氨气敏电极电极是一个置于碱性电极液中的pH电极，水中的氨气分子通过氨半渗透膜进入电极，从而改变电极液的pH值，pH电极检测其变化，所测得的电动势与水样中氨浓度符合能斯特方程。
由此可测得样品电位值，确定水样中的氨氮含量。
技术参数
6000-NH3-N PhotoTek ammonia nitrogen on-line analyzer (gas sensitive electrode method) Ammonia nitrogen on-line automatic monitoring ceremony a with the gas sensing electrode method for monitoring principle can be online continuous measurement, real-time read, storage and analysis can be widely used in surface water, drinking water or water, and general industrial wastewater and urban sewage treatment plant of online monitoring. PhotoTek 6500 has integrated electrode; in practice, the stability is good, the reagent consumption is small, the maintenance is small and so on.
Typical application
Automatic and continuous monitoring of water quality of widely used in surface water (rivers, lakes and reservoirs), drinking water sources, water pipe network etc., service to the environmental protection departments, water departments, large and medium-sized enterprises.
Product features
The use of ammonia electrode standard addition method, easy quality control, even if the ammonia content is very low also can achieve accurate measurement;
The less amount of reagent, less maintenance, low maintenance cost and price;
The positive solution road maintenance, automatic sampling and self cleaning function;
The selection of Chinese interface, easy to use, easy to operate;
- on the monitored parameters setting verification value and accurately check the measurement data for each a, immediately understand the operation conditions of the instrument, of the detected data, judge the effectiveness of;
The function can be extended (inside the instrument increase of sample pre treatment, exclude the interference of parts or accessories for position reservation), to ensure that the instrument can run stably for a long time.
The storage function of independent, safe and reliable data storage;
The reliable data transmission and integration of multiple transmission means, with 4-20mA (Quad) analog output, 8 Di
digital input and RS485 / 232 data interface, also support the Modbus data processing methods to access and control the machine;
- large measuring range, automatic switching range and broaden the applicable range of the instrument can be used in surface water, drinking water can also be used in on-line monitoring of pollution sources;
Detection principle
Ammonia gas sensing electrode is placed alkaline electrode solution pH electrode, the ammonia molecules in the water by ammonia semi permeable membrane into the electrode, thus changing the electrode solution pH, pH electrode detection the change, the measured electromotive force and water ammonia concentration with the Nernst equation. This can be measured sample potential value, determine the content of ammonia nitrogen in water samples.
Technical parameters
Standard addition method for detection of ammonia sensitive electrode
Detection period 10min~30min
Measurement range of 10.0~100, mg/L 100~1000, mg/L 0.00~10.0mg/L
The lowest detection limit was 0.03 mg/L Repeatability error 3%FS
Zero drift 5%FS
Range drift 5%FS
Response time is less than 3min
Temperature compensation precision less than 0.1mg/L MTBF = 720h/
Actual water sample ratio test 10%。