In order to expand the vast blue ocean market for the Internet of Things, China Unicom has listed the Internet of Things as one of the three innovative strategies. The NB-IoT network can be used to solve the problems of high cost, high power consumption, insufficient coverage capacity, small capacity and high protocol complexity of existing terminals in 2G / 3G / 4G networks that affect the scale of the Internet of Things. China Unicom Network Technology Research Institute has been at the forefront of technological innovation and development, is committed to fully promote the NB-IoT technology focus on Internet of Things technology development strategy, in close cooperation with Huawei, from the early NB-M2M prototype verification until NB- IoT Commercial Device Technology Validation, Continuously Increasing Confidence in the Global Telecommunication Market to Accelerate the Full Commercial Deployment of the NB-IoT Standard. From April to October 2015, China Unicom Network Technology Research Institute and Shanghai Unicom, in close cooperation with Huawei, took the lead to complete the LTE narrowband Internet of Things (IoT) in order to promote prototype authentication of narrowband IoT based on LTE system and promote 3GPP to speed up the development of narrowband IoT standard. Technical verification. Huawei and Shanghai Unicom built the first NB-CIoT pilot in the world in Shanghai in June 2015, enabling intelligent parking and intelligent meter reading business demonstrations. China Unicom took the lead to showcase its comprehensive technology solution for narrowband IoT including chips, modules, car inspection terminals, watches, base stations, core networks and service platforms to operators, industry companies and government teams all over the world and prove to the industry that LTE narrowband Internet of Things technology feasibility and technology maturity. Shanghai Unicom field experiment in the industry a strong response, triggering a global market for the development of the Internet hot discussion, a direct impact on the 3GPP NB-IoT IOT standard-setting process. Figure 1 The world's first NB-IoT prototype technology field pilot During Shanghai MWC World Mobile Congress in July 2015, Shanghai Unicom and Huawei third party vertical industry users signed the world's first 4.5G network strategic cooperation agreement, announcing the first deployment of 4.5G mobile network in Shanghai and the first phase in the implementation of the agreement Commercial deployment of smart parking and other mobile Internet services. In November 2015, in order to bring together industry forces to push forward the NB-IoT standard and accelerate the development of the industry ecosystem, China Unicom as a founding member co-sponsored the formation of the NB-IoT Forum with companies such as Vodafone, Deutsche Telekom and Huawei. NB-IoT Forum was established to focus on the global telecommunications market in the Internet of Things applications to accelerate the NB-IoT standard global commercial deployment. In 2016, China Unicom Network Technology Research Institute to strengthen cooperation with Huawei in the business development strategy of the Internet of Things, the Internet of Things network structure, operation mode, Openlab construction and other aspects to accelerate the development of the Internet of Things industry chain. Network Technology Research Institute, China Unicom Branch and Huawei tripartite cooperation in close cooperation to carry out NB-IoT new technology test and technical verification work to speed up the Internet of Things technology in smart watches, smart lights, intelligent wear and other industries. With the formal release of NB-IoT core functional technical standards by 3GPP in mid-June, China Unicom Network Technology Research Institute fully cooperated with Huawei to launch the NB-IoT freeze-based standard test and strengthen the cooperation with Unicom's provincial branches in the key application industries' operation and commercial Mode of close cooperation for China Unicom commercial network construction and operation of Internet of Things to explore the mature experience. Figure two joint debugging environment The next 5-10 years, the Chinese market will become the world's largest market for IoT, China Unicom ushered in the explosive growth of cellular Internet market opportunities for development. With the strong cooperation between China Unicom and Huawei in the field of Internet of Things such as NB-IoT, and steadily advancing the innovation strategy of China Unicom's Internet of Things, China Unicom will face even greater opportunities for development in the broader emerging market for Internet of Things.
* Stroke length adjustment
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* Multi-function valve ensure fullness of hydraulic oil in liquid chamber
* Both manual control and digital control for 4-20mA is available.
* Hydraulic actuated Diaphragm Metering Pump, no leakage.
* The flow can be adjusted from 0-100% while it's running or
stopped.
*With the design of inner changeable release Safety Valve
and limited auto-compensation
valve.
* Diaphragm material:
PTFE
* Double diaphragm design with diaphragm rupture alarm system.
* Double or triple pump heads is available.
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