余氯傳感器NS－70

NS－70余氯傳感器

· 典 型 應(yīng) 用
    適用于飲用水、工業(yè)過(guò)程水消毒殺菌工藝的余氯濃度在線監(jiān)測(cè)，也可用于游 泳池等需要測(cè)量余氯濃度的場(chǎng)所。

· 測(cè) 量 原 理
    NS－70型余氯電極是一種隔膜式極譜（clark）型傳感器，由陰極、陽(yáng)極、電解液及陰極上覆蓋的一層氣透性薄膜構(gòu)成。被測(cè)液中余氯通過(guò)隔膜擴(kuò)散至陰極上，陰極與陽(yáng)極間適當(dāng)?shù)臉O化電壓可在陰極上將余氯還原，這些化學(xué)反應(yīng)產(chǎn)生與所測(cè)量溶液中余氯成正比的電流。

· 特 點(diǎn)：
    ★反應(yīng)靈敏，準(zhǔn)確度高，穩(wěn)定性好
    ★操作簡(jiǎn)便，維護(hù)量小
    ★適用于各種介質(zhì)，膜不易損壞、抗污染

· 技 術(shù) 參 數(shù)

    響應(yīng)時(shí)間：90%﹤2min（室溫），95%﹤5min（室溫）
    溫度范圍：測(cè)量時(shí)2～45℃
   最小流速：200～250ml/min，流通式流量不能小于30L/h
    pH范圍：4～8.2pH
    耐壓范圍：0～1bar
    溫度補(bǔ)償：熱敏電阻阻值由用戶定制
    電極電纜：3m高阻抗低噪音屏蔽電纜線
    電極尺寸：直徑20mm，長(zhǎng)度70mm
    電極材質(zhì)：316L不銹鋼殼體，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