余氯传感器NS－70

NS－70余氯传感器

· 典 型 应 用
    适用于饮用水、工业过程水消毒杀菌工艺的余氯浓度在线监测，也可用于游 泳池等需要测量余氯浓度的场所。

· 测 量 原 理
    NS－70型余氯电极是一种隔膜式极谱（clark）型传感器，由阴极、阳极、电解液及阴极上覆盖的一层气透性薄膜构成。被测液中余氯通过隔膜扩散至阴极上，阴极与阳极间适当的极化电压可在阴极上将余氯还原，这些化学反应产生与所测量溶液中余氯成正比的电流。

· 特 点：
    ★反应灵敏，准确度高，稳定性好
    ★操作简便，维护量小
    ★适用于各种介质，膜不易损坏、抗污染

· 技 术 参 数

    响应时间：90%﹤2min（室温），95%﹤5min（室温）
    温度范围：测量时2～45℃
   最小流速：200～250ml/min，流通式流量不能小于30L/h
    pH范围：4～8.2pH
    耐压范围：0～1bar
    温度补偿：热敏电阻阻值由用户定制
    电极电缆：3m高阻抗低噪音屏蔽电缆线
    电极尺寸：直径20mm，长度70mm
    电极材质：316L不锈钢壳体，POM膜帽，PTFE膜

NS-70 Chlorine sensor polarography
* Typical Applications
    Applicable to drinking water, industrial process water disinfection sterilization process on-line monitoring of residual chlorine concentration, but also can be used for swimming pools that require measurement of residual chlorine concentration of the venues.

* Measurement principle
    NS-70-type chlorine electrode is a diaphragm-type polarographic (clark) sensors, from the cathode, anode, electrolyte and cathode covered with a layer of gas permeability of film composition. The measured liquid chlorine spread through the diaphragm to the cathode, the cathode and anode polarization voltage between the appropriate chlorine in the cathode will be restored, these chemical reaction with the measurement of residual chlorine in solution is proportional to current.

* Features:
    ★ responsive, high accuracy, good stability
    ★ easy to operate, maintain a small amount of
    ★ applicable to a variety of media, film difficult to damage, anti-pollution

* Technical parameters

Survey:                       HOCl / chlorine trace HOCl / chlorine
 
Scale range:                  0.05 ~ 20ppmHOCl 0.01 ~ 5ppm
 
Polarization time:             30min for the first time the first 90min
                               The second 10min the second 45min
 

    Response time: 90% <2min (room temperature), 95% <5min (room temperature)
    Temperature range: measurement 2 ~ 45 ℃
    Minimum flow rate: 200 ~ 250ml/min, flow-through traffic can not be less than 30L / h
    pH range: 4 ~ 8.2pH
    Pressure Range: 0 ~ 1bar
    Temperature Compensation: thermistor resistance customized by the user
    Electrode Cable: 3m high impedance low noise shielded cable
    Electrode size: diameter 20mm, length 70mm
    Electrode Material: 316L stainless steel shell, POM film cap, PTFE membrane