High reputation for TU-034 thermostatic cartridge wax sensor for sanitary ware – China Factory
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High reputation for TU-034 thermostatic cartridge wax sensor for sanitary ware – China Factory Detail:
1. Operation Principle
The Thermostatic Wax that has been sealed in shell body induces expansion by a given temperature, and inner rubber seal part drives its handspike to move under expansion pressure to realize a transition from thermal energy into mechanical energy. The Thermostatic Wax brings an upward movement to its handspike, and automatic control of various function are realized by use of upward movement of handspike. The return of handspike is accomplished by negative load in a given returned temperature.
2. Characteristic
(1)Small body size, occupied limited space, and its size and structure may be designed in according to the location where needs to work.
(2)Temperature control is reliable and nicety
(3)No shaking and tranquilization in working condition.
(4)The element doesn’t need special maintenance.
(5)Working life is long.
3.Main Technical Parameters
(1)Handspike’s height may be confirmed by drawing and technical parameters
(2)Handspike movement is relatives to the temperature range of the element, and the effective distance range is from 1.5mm to 20 mm.
(3)Temperature control range of thermal wax actuator is between –20 ~ 230℃.
(4)Lag phenomenon is generally 1 ~ 2℃. Friction of each component part and lag of the component part temperature cause a lag phenomenon. Because there is a difference between up and down curve of traveling distance.
(5)Loading force of thermal wax actuator is difference, it depends on its’ shell size.
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Panasonic, together with the Belgium-based research institution IMEC, has developed a DNA testing chip that automates all stages of obtaining genetic information, including preprocessing.
This development is expected to enable personalized, tailor-made therapy to become widespread.
“This is the chip we’ve actually developed. As you can see, it’s less than half the size of a business card. It contains everything needed for testing DNA. Once a drop of blood is inserted, the chip completes the entire process, up to SNP detection.”
SNPs are variations in a single DNA base among individuals.
Detecting SNPs makes it possible to check whether genetically transmitted diseases are present, evaluate future risks, and identify genes related to illness.
“By investigating SNPs, we can determine that this drug will work for this person, or this drug will have severe side-effects on that person. Investigating SNPs enables tailor-made therapy. But with the current method, it has to be done in a specialized lab, so it actually takes three to four days. In the worst case, it takes a week from sending the sample to getting the result. Our equipment can determine a patient’s SNPs in just an hour after receiving the blood.”
Testing is done simply by injecting the blood and a chemical into the chip, and setting it in the testing system.
First of all, the blood and chemical are mixed. DNA is then extracted from the mixed solution. The regions containing SNPs are then cut out and amplified. DNA amplification uses technology called PCR, which cuts out the desired sections by varying the temperature. With the conventional method, this process took two hours.
“Through careful attention to thermal separation design, we’ve achieved high-speed PCR, where 30 temperature cycles are completed in nine minutes. We think this is one of the fastest PCR systems in the world.”
The amplified DNA is then sent through a micropump to a DNA filter. Here, the DNA is separated for each section length. Then, a newly developed electrochemical sensor identifies SNPs while the DNA is dissolved in the chemical.
“To implement this system on one chip, and make detection easy, the first thing we focused on was the actuators. This system requires a very small, powerful pump. In our case, we used a conductive polymer for the actuators. A feature of these actuators is they’re powerful, yet extremely compact. They can exert a pressure of up to 30MPa.”
“Ultimately, we’d like to make this system battery-powered. We think that would enable genetically modified foods to be tested while still in the warehouse.”
Details of the design can be found here:
P. H. Pham, D. V. Dao, L. B. Dang, and S. Sugiyama, “Single mask, simple structure micro rotational motor driven by electrostatic comb-drive actuators”, Journal of Micromechanics and Microengineering, Vol. 22, No. 1 (20 Dec 2011)
