High flexible tube, design

Flexible tubing for high pressure service, equipped with stainless steel overbraid plus tube adapter end connections, is commonly available with a carbon black-loaded PTFE core tube to dissipate static. Numerous other designs of conductive and antistatic tubing are available for low pressure applications. The utility of conductive tubing in preventing fires during transfer of aromatic hydrocarbon liquids is described in [165]. 

With the recent advances in coordination chemistry, chemists can imagine the design and fabrication of CPs with even more complex topologies and structures. The best illustration of the high flexibility that offers the use of coordination chemistry is the recent synthesis of coordination tubular architectures. However, even though it is possible to find a reasonable number of tubular metal-organic frameworks in the literature, most of these systems correspond to 3D networks with tubular pore channels and not to discrete ID coordination tubes. 

One of the most popular high-temperature sensors is the platinum thermocouples, which are usually installed inside protective thermowells or protection tubes. When installed horizontally, wells tend to droop, causing binding of the TC element, making replacement difficult. The latest designs incorporate a sheath with a flexible cable that can easily be inserted into even badly drooping wells. Ceramic wells do not suffer from droop but have other limitations such as low surface strength, brittleness, and low erosion resistance. 

Judicious use of labor saving devices obviously increases work efficiency by decreasing the boredom and persontil fatigue that result from excessively repetitious manual operations. Moreover, mechanical devices obviously perform some tasks more precisely and economically than technicians can. Fully automated systems, however, can be prohibitively expensive as capital investments, trouble-prone, expensive to maintain, and highly restrictive in how they can be used (e.g., they may be inflexible in the kinds of tests they can perform). The manufacturers of automated equipment may deliberately design components of their system so that they will be the sole source of these components (e.g., proprietary reagents and odd-shaped tubes) and this can be a big disadvantage. Between the extremes of no automation and complete automation there is an area of semiautomation that most laboratories may wish to consider because of cost and flexibility considerations. 

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