Yokogawa 横河 FLXA21 是一款模块化的两线制电导率仪，具备以下特性：

模块化设计：FLXA21 可以连接一台或两台传感器进行测量，采用模块化设计，能够使用不同的传感器模块实现多种测量目的，如 pH/ORP、接触式电导率(SC)、感应式电导率(ISC)或溶解氧(DO)。

温度补偿功能：该电导率仪具有温度补偿功能，内置标定用缓冲液表可以监视电池结垢，并提高电导率测量精度。

广泛的电池常数范围：电池常数范围为0.005～50cm-1，可以使用两电极和四电极传感器，以及5种温度传感器，以实现精确温度补偿。

超纯水补偿：可为蒸汽、凝液和锅炉用水等脱盐水提供超纯水补偿，在制药行业的超纯水监视中，FLXA21 可根据水质标准监视过程液体的水质，以符合USP(美国药典)<645>章的标准。

多样化的外壳选择：为了广泛应用于工业环境中，FLXA21 电导率仪具有不同的外壳可供选择，包括塑料、不锈钢或带抗腐蚀涂层的不锈钢。

先进的用户界面：FLXA21 具有触摸屏界面，提高操作性，并且具备传感器自诊断功能、维护时间预估功能，以及7种语言的显示选项。

双传感器测量系统：FLXA21 可以同时连接两台相同型号的传感器，降低安装成本，节省空间，配置高度可靠的双传感器测量系统。

价格范围：根据仪器信息网的报价，FLXA21 模块化两线制感应式电导率仪的价格范围大约在1万至2万人民币之间。

这款电导率仪以其灵活性、精确性和可靠性，适用于多种工业和制药应用。

The Yokogawa FLXA21 is a modular two-wire conductivity meter with the following features:

Modular design: The FLXA21 can be connected to one or two sensors for measurement, and its modular design enables the use of different sensor modules for a variety of measurement purposes, such as pH/ORP, contact conductivity (SC), inductive conductivity (ISC) or dissolved oxygen (DO).

Temperature compensation function: the conductivity meter has temperature compensation function, built-in calibration buffer meter can monitor the battery fouling, and improve the conductivity measurement accuracy.

Wide range of battery constants: The battery constant ranges from 0.005 to 50cm-1, and two and four electrode sensors can be used, as well as five temperature sensors, to achieve accurate temperature compensation.

Ultra-pure water Compensation: Provides ultra-pure water compensation for desalted water such as steam, condensate, and boiler water. In ultra-pure water monitoring in the pharmaceutical industry, FLXA21 monitors the water quality of process liquids according to water quality standards to comply with USP <645>.

Diverse housing options: For a wide range of applications in industrial environments, the FLXA21 conductivity meter is available in different housing options, including plastic, stainless steel or stainless steel with a corrosion resistant coating.

Advanced user interface: The FLXA21 features a touch screen interface for improved operability, as well as sensor self-diagnosis, maintenance time estimation, and display options in seven languages.

Dual sensor measurement system: FLXA21 can connect two sensors of the same model at the same time, reducing installation costs, saving space, and configuring a highly reliable dual sensor measurement system.

Price range: According to the quotation of Instrument Information Network, the price range of FLXA21 modular two-wire induction conductivity meter is about 10,000 to 20,000 yuan.

With its flexibility, accuracy and reliability, this conductivity meter is suitable for a wide range of industrial and pharmaceutical applications.