过程分析

监测蒸汽发生器

蒸汽发生器在不同的过程中起到重要作用：在发电过程中给发电机或汽轮机提供动力、驱动蒸汽机、为热电厂提供能源、或用于化工和金属行业消耗热量的过程。

蒸汽发生器具有关键应用功能，而停机或更换蒸汽发生器的成本极高，因此要通过监测水质来预防磨损引起的损坏。威胁设备的因素如下：

管道被生物或矿物质污染，影响设备的效率，
腐蚀设备部件，缩短其使用寿命，并可能对人员造成危险，
对冷凝水的监测不够充分，需要增加排污次数，从而导致水、化学品和能源需求不经济。

化工

能源

监测水质确保蒸汽发生器的性能

尤其要注意蒸汽发生器的加热管。通常为蒸汽发生器供应碱性水，这有利于在加热管表面形成一层能防腐蚀的薄氧化层。可以例如在水中加入磷酸钠和氢氧化钠使之呈碱性。但是过量加入这些物质也会导致问题，因此要在精确监测 pH 测量值的基础上定量加入。

为了能在离子活度很低的液体中进行高精度 pH 测量，Knick 开发出了传感器 SE558，通常将其用于超纯水应用以及发电用水的处理。

氧具有高度腐蚀性，即使百万分之几的极小浓度也会侵蚀金属表面，对蒸汽发生器的使用寿命有很大影响。因此将联氨之类的化学品用来与氧自由基结合。

SE707 传感器能以 1 ppb 的痕量检测限测量溶解氧，因此可以适当定量加入联氨。加热管损坏或者过量加入化学品会导致水中的有害物质浓度升高，可通过测量传导电导率予以识别。

电导率上升表明水污染加剧，必须通过排污或者必要时通过检查设备予以应对。为了精确、可靠测量纯水、冷却水和锅炉给水以及水蒸气回路中很小、极小的电导率，Knick 推出了 Memosens 传感器 SE604，该传感器采用同轴布置的坚固不锈钢电极。与所有 Memosens 传感器一样，SE604 也有内置温度探头，可用于精确补偿温度。

由于传统模拟传感器的接头不防水，模拟产品的制造商都将电缆封装在传感器中。因此，用户在更换传感器时必须拔下变送器上的电缆。Memosens 传感器则不用这么费事，因其采用非接触方式传输测量值，完全不受湿气影响。由于在 Memosens 传感器接头中以感应方式传输测量值，湿气或结垢都不会影响传输。

除此之外，采用数字 Memosens 技术，可以在实验室内的理想条件下预先校准传感器，即使未经培训的人员也能在现场轻松更换。电池常数被自动传输到测量变送器，并可用于进一步的校准操作。

投资回报

由于 Memosens 传感器很少需要重新校准或更换，测量回路维护和采购新传感器的成本显著降低。
传感器的操作大幅简化，尤其在湿度高的应用中优势更为明显：Memosens 传感器以感应方式传输数据和馈送电压，并且变送器的防护等级很高，无需担心接触点潮湿或腐蚀，或影响电子设备。Knick 为变送器提供三年保修。

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With the Uniclean 700 series, Knick is introducing a modular control system, that can be installed very quickly and cost-effectively as a flexible entry-level solution for automated sensor cleaning.

12月 2023

Company

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Interface Technology

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Process Analytics

Knick Austria - direct customer contact in Austria from 2024

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Launch, Fitting, WA111

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pH and conductivity measurement in vaccine production

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4月 2023

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11月 2022

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Users can now connect up to six Memosens sensors simultaneously.

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Combined pH- and ORP-Sensor SE555X/*-AMSN

Combined pH and ORP measurement in one sensor SE555 saves place and equipment costs for demanding requirements in the chemical industry, the food sector and for hygienic applications.

4月 2022

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10月 2021

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5月 2021

Process Analytics

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使用配备 EtherNet/IP 协议的 Stratos Multi E471 进行过程优化

EtherNet/IP communication protocol allows the transmitter to be easily integrated into Industrial Ethernet networks as PCS.

5月 2021

Process Analytics

Launch, Conductivity, Sensor, SE656

新型数字式电导率传感器 SE656N

New toroidal Digital Conductivity Sensor with a large measuring range and consisting of PFA for using in aggressive media

3月 2021

Process Analytics

Protos II 4400, Profinet

Transmitter for the process industry with PROFINET module

The PROFINET industrial Ethernet standard is becoming an increasingly important aspect of process engineering in the “Industry 4.0” environment.

7月 2020

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Launch, Fitting, ARD170

适合移动应用场景的高品质浸入式连接件

Knick Elektronische Messgeräte GmbH & Co. KG 公司向市场上推出的 ARD 170 是一款高品质浸入式连接件，用于移动式测量 pH 值、电导率和溶解氧。在进行结构设计时，特别注意简单灵活的操作方式。

7月 2020

Process Analytics

Fitting, ARD50, ARD75

导电版模块化浸入式连接件

Knick Elektronische Messgeräte GmbH & Co. KG 公司借助浸入式连接件 ARD 50 EL 和 ARD 75 EL 在自己的液体分析连接件产品组合中增加了导电 (EL) 版。这两种工业连接件具有模块化结构，可以广泛选择各种专用传感器。

4月 2020

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Launch, Transmitters, Stratos Multi

New multiparameter transmitter Stratos Multi

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2月 2018

Process Analytics

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Sensors as the direct interface to the process must be exactly matched to the chemistry of the measured medium and to the prevailing pressure and temperature conditions.

4月 2017

Process Analytics

MemoRail Modbus

Powerful compact analyzer boosts performance while reducing costs

It has long been common practice when taking pH/ORP, conductivity, and oxygen measurements that a fixed analyzer be mounted near the sensor. The analyzer serves several purposes.

2月 2017

Process Analytics

Conductivity

High-Precision Conductivity Measurement at Extreme Temperature Differences

Pharmaceutical manufacturer, EVER Pharma Jena uses the extremely robust conductivity sensors SE605(H) and SE680 with Memosens technology from Knick.

11月 2016

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Our Knick multi-parameter analyzers are now available with Profibus and FF interfaces. Even for hazardous areas.

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监测蒸汽发生器

监测蒸汽发生器

监测水质确保蒸汽发生器的性能

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最新博客文章

Uniclean 700 Series - Modular control system for automated sensor cleaning

Knick Austria - direct customer contact in Austria from 2024

Robust WA111 Retractable Fitting Made of Plastic for Highly Corrosive Operating Conditions

成功的聯合專案：尼克公司開發了特殊的塞拉馬特 WA 155 可伸縮配件，用於 SOPAT 的光學探頭

pH and conductivity measurement in vaccine production

Sturdy 2-Electrodes Conductivity Sensor SE625 with Coaxial Electrodes made of Titanium

Sensor Adapter with Lock Function Enables Safe and Thorough Cleaning

Up to six Sensors on one Transmitter Protos II 4400 via Modul MSU4400-180

ACHEMA 2022 - Knick at the world forum for the process industry

Combined pH- and ORP-Sensor SE555X/*-AMSN