德国TEWS  在线水分测定仪  方案推荐

在线水分和密度测试原理

SAP行业在线水分和密度测试的方案推荐和简介

Equipment: MW-4260 + SPE-26（diameter:26mm）+ Bypass-Option and two valves（1 upper and 1 lower valve of the sensor to regulate the filling and emptying）.

SAP Powder is falling from the main pipe through the upper pipe into the sensor by cavity. The upper valve is regulating the filling of the sensor which is equipped with a filling and a temperature sensor. The filling sensor gives the signal to the upper valve when to close, and a few seconds after the lower valves open to empty the sensor by an additional air flow（by pressure, max. 1.5bar, better less pressure）. If the customer has an air pressure of e.g. 7bar they need a reducer in order not to have a higher air pressure than 1.5bar inside the sensor. To guarantee a good way of emptying the sensor the lower valve should be larger than 26mm.

With this equipment we can make every 30 seconds measurements（filling – measuring – emptying）. If there´s less product inside the pipe（e.g. 25%）, it might take more time to fill the sensor. You might be able to accelerate the filling process by enlarging the “funnel” between the main pipe and the connecting pipe to the sensor.

For the SAP Measurements（we can calibrate the moisture as well as the（bulk-）density）we have developed a special crystal glass inner tube of the sensor in order to avoid abrasions during the production flow and the emptying. We have chosen（until now）the bypass-option（dia. 26mm）, as all SAP-Manufacturers we are in touch with would also like to calibrate and to measure the（bulk-）density of the SAP-Powder. The lower connection pipe should be bigger than 26mm in order to ensure a smooth flow.

Please see also the two attached photos of our installations in the process, photo of our complete sensor. as well as our Technical Manual of the Bypass System.

We know that the SAP granules are highly abrasive, our inner tubes are made of crystal glass, and they are working very well and have no any abrasion issue.

For the measurements with a tubular sensor（SPE-26）dust is no issue and has no impact on the measurements. The dust issue is not impacting any measurements for the bypass solution（viscosity, or flowability needs to be checked with the bypass solution）.

SAP行业在线传感器

SAP行业参考用户

Our existing customer in SAP industry, and its detailed instrument model, installation site or installation station, and its configuration.

台塑Formosa：We have 4 Installations（3 in Taiwan and 1 in Ningbo）, Installation location: after the dryer （moisture range: 3.0-3.6%）. The Installations have been done 2-3 years ago (the first one 3 years ago and the other ones during the following year, two years ago). They have tested different technologies and no other method was working nor giving reliable measurement results. And Formosa has confirmed us the same points that other measurement technologies are not working. Probably it is due to the shape of the single granule and that the moisture is more inside the granule and less outside. Furthermore, the density measurements are also an added value for the customer.

BASF：We provide the solution for their lab with MW 4300, and a process analyzer（MW-4260）and a lab sensor（SLH-40B）in Germany, Brazil, Thailand and Belgium. They automize their lab completely and make the lab measurements with a barcode-reader and a robot which will fill and empty the sensor with the samples  automated. In case of BASF（automated）it is also no problem.

As to the laboratory solutions, we will probably have 3 calibration curves, maybe 4, as the samples come from many different process steps, so with a wide moisture range between 0.5% and 17%.

Evonik：The customer is satisfied with our lab measurement in their laboratory.

SAP客户现场安装照片

Honestly, I don´t know the exact particle size. The samples of all manufacturers that I have seen（BASF, Formosa, Evonik, LG Chem）were “fine granule”. In the process we are measuring in the range 3-4% moisture content. In the laboratory we have measured（with different calibrations）between 1-17%.

Generally, the granule size has no impact on our moisture measurements. All manufacturers were very interested in the moisture measurements（independently from the density）, and some of them required specifically the calibration of the（bulk）density. The density measurements are possible to calibrate in the process. Also, in the laboratory, but we have to keep in mind that the customer needs to ensure the same filling procedure of the beakers for every measurement when he wants to make lab-density measurements.

Since SAP is abrasive product, the inner tube which touch product is glass tube. And they have to use soft brush for cleaning as maintenance, but not any metal tools.

测试结果重复性示例 

安装调试和验收：

设备到货前1个月，厂家向买方提供“实验室安装要求手册”，提出实验室环境、电源、气源、管道连接等具体安装条件要求。

仪器到货后，买方具备必要的实验室安装条件，厂家在接到买方安装需求后，5个工作日内派设备厂家工程师到达买方现场，对设备进行免费安装和调试。

现场开箱验收应达到如下要求：所有设备的外观、喷漆、电缆的外壳和接头完好，铭牌正确；所有设备的附件、备件必须完整、齐全，标识清楚。

买方严格按照技术协议书的要求进行验收。厂家提供测试用的设备和工具，供买方技术人员在验收时使用。设备验收合格后签署验收报告。

设备培训：

1）厂家负责免费为买方的分析人员和技术人员进行现场培训，培训内容包括但不限于设备仪器结构、工作原理、操作注意事项、方法建立、配件更换以及维护和维修；培训应使最终用户操作人员能够独立使用设备设置参数制备样品、会进行维护保养为止。

2）厂家根据最终用户的要求进行定期回访，对维修人员进行专业仪器维修培训，并对仪器的常见故障的诊断及处理提出建议。

售后服务：

1）厂家保证提供的设备在原生产工厂已做好整机测试，并达到买方要求的技术条件。

2）仪器安装调试验收合格后，厂家提供壹年的免费保修期，并提供仪器保修期外的维修、技术服务。在保修期内，免收维修费，厂家对除易损件外的非人为损坏导致故障的零部件免费更换。

在保修期外，买方应根据实际情况支付维修费和必要的零部件费用，厂家须对仪器提供终身的技术支持。

3）厂家须提供如下维修响应服务：在保修期内，接到买方电话或书面报修后，应在4小时内答复并提出处理方案；如不能解决问题，厂家应在24小时内到现场给予维修服务。