Woodward 5417-040模块备件

Woodward 5417-040

1.1说明
8237型二氧化碳监测仪是一种微处理器
基于使用气敏膜探头进行监测的分析仪
CO2水平
在AGR核电的冷却水样品中
车站。
1.2培训
由于上述仪器的专业性质，因此：
建议，如果终用户人员没有
有维护该设备的经验，需要进行培训
由本公司提供。
此类培训可通过英国当地公司获得，或
海外代理在其他地方，可以在
用户的场所或工厂。
1.3主要部件的位置和功能-
图1.1
二氧化碳的监测包括添加酸
将样品中的碳酸氢根离子释放为碳的试剂
二氧化碳是一种气体。气体感测探头响应于部分压力
压力，因此二氧化碳气体的浓度。
8237二氧化碳监测仪的内部有一个液体处理部分
模制塑料外壳的下半部分和电子元件
上部分中的部分。
样品入口和排放连接件位于泵的底部
仪器中心安装的蠕动泵
样品和试剂通过混合和反应线圈连接至气敏探针端部的流通盖，其中
进行测量。
为了保持佳测量精度，有必要：
通过引入“低”和“高”进行两点校准
已知浓度的标准溶液。8237监视器
使用电磁阀自动引入这些解决方案
微处理器控制下的可编程间隔。
可以使用探针、泵和校准溶液容器
通过铰链式亚克力门（该门由铰链保持打开或关闭）
使用推/推闩锁。仪表箱也铰接在一起
允许接近电子部分、防护管和电磁阀
用于维护的阀门等。
电子部分包括一个微处理器单元
在控制仪器功能的左上角
右上角所有外部电气连接的接线盒
在铰链箱后面。

Woodward 5417-040
 

Woodward 5417-040

1.1 Description The Model 8237 Carbon Dioxide Monitor is a microprocessor based analyser using a gas sensing membrane probe to monitor the level of CO2 in cooling water samples in AGR Nuclear Power Stations. 1.2 Training Due to the specialised nature of the above instrument, it is recommended that, where the end users personnel have had no previous experience of maintaining this equipment, training be provided by this Company. Such training is available via the local Company in the UK, or Overseas Agent elsewhere and may be carried out either on the users premises or at the factory. 1.3 Location and Function of Main Components – Fig. 1.1 Monitoring of carbon dioxide involves the addition of an acid reagent to liberate bicarbonate ions in the sample as carbon dioxide gas. The gas sensing probe responds to the partial pressure and hence the concentration of carbon dioxide gas. The 8237 carbon dioxide monitor has a liquid handling section in the lower half of a moulded plastic enclosure, and the electronics section in the upper portion. Sample inlet and drain connections are at the base of the instrument. A peristaltic pump, mounted centrally, proportions sample and reagent through a mixing and reaction coil to a flowthrough cap at the end of a gas sensing probe where the measurement takes place. To maintain optimum measurement accuracy, it is necessary to carry out two point calibration by introducing 'low' and 'high' standard solutions of known concentration. The 8237 monitor uses solenoid valves to introduce these solutions automatically at programmable intervals under the control of the microprocessor. Access to the probe, pump and calibration solution containers is by means of a hinged acrylic door, which is held open or closed by use of a push/push latch. The instrument case is also hinged to allow access to the electronics section, guard tubes and solenoid valves etc. for maintenance. The electronics section consists of a microprocessor unit situated at the top left which controls the instrument functions, and a user junction box for all external electrical connections, at the top right behind the hinged case.