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1、The digital temperature sensor of DS18B20The digital temperature sensor of DS18B20, This product uses the American DALLAS companys DS18B20 network digital temperature sensor chip package. but become wear-resistant touch, the physical volume is small, convenient, packaging form is varied , Suitable f
2、or all kinds of narrow space in digital temperature test and control field equipment. Unique 1-WireTM interface requires only one port pin for communication. Multidrop capability simplifies distributed temperature sensing applications, requires no external components, Can be powered from data line.
3、Power supply range is 3.0V to 5.5V, Zero standby power required, Measures temperatures from -55C to+125C. Fahrenheit equivalent is -67F to+257F, 0.5C accuracy from -10C to +85C, Thermometer resolution is programmable from 9 to 12 bits, Converts 12-bit temperature to digital word in750 ms (max.).User
4、-definable, nonvolatile temperature alarm settings, Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition).Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally
5、sensitive system.1、the description of technique function:1) Single-line interface is unique, DS18B20 while linking with microprocessor only need a line can immediately carry out the double of microprocessor and DS18B20 toward the communication.2) measure scope-55 +125 , proper measure resolutions 0.
6、5 .3) support several set nets function, several DS18B20 can merge at unique three on-line, the most can merge 8, if amount was excessive, it would make power supply the power electric voltage over low, result in thus the signal delivers of unsteady, the realizations order to measure more4) work the
7、 power:35V|DC5) dont need any outer circle component in the use6) measure the result measure a way string with 912 numbers line transmission7) stainless steels protect to take care of diameter 68) be applicable to DN1525, DN40 DN250 various equipments that lie industrial piping of quality and narrow
8、 and small space measure9) standards install the thread M10 X1, M12 X1.5, the G 1|2 term chooses10) PVC electric cable direct the line or virtuous type ball type connect line box line, the easy to and other electric appliances equipments links.2、Application1) products are applicable to cold storage,
9、 food Cang, keep a bottle, tele-communications engine room, electric power engine room, cable slot etc. measures moderate control realm2) stalk tiles, urn body, the Fang machine, the air condition, waits industrial equipments of narrow and small space to measure a moderate control.3) car air conditi
10、on, refrigerator, cold cabinet, and medium low temperature dry box of etc.s.4) provide hot|make cold piping calories to calculate, the central air condition divides a thermal energy to calculate to measure a moderate control with industrial realm3、Product model number and specificationtypetemperatur
11、e rangeinstall threadelectric cable lengthapply pipingTS-18B20-55125no1.5 mTS-18B20A-55125M10X11.5mDN1525TS-18B20B-551251/2GConnects line boxDN40 604、Connect line instructionThe characteristics special front line connects, needs a line to correspond by letter to order more ability and simplified a d
12、istribute type the temperature spread the feeling application didnt need an external component to use data total line power supply, the electric voltage scope has never needed to provide for use the power diagraph temperature scope for the 3.0-5.5 Vs BE-55 to+125 .The Fahrenheit is equal hence-67-25
13、7 Fahrenheit degree-10 go to+85 accuracy inside the scope is 0.5 The temperature spreads a feeling machines programmable resolution to convert into 12 number formats for 912 temperatures biggest be worth to 750 a milli- of second the customer can define of not and easily lose sex temperature to repo
14、rt to the police to establish an application to include a constant temperature control, industrial system, consume electronics product thermometer, or any hot sensitive systemThe number thermometer that describes the DS18B20 provides 9-12(the programmable equipments temperature read a number. The in
15、formation is disheveled hair to send to connect through a line from the DS18B20, so central microprocessor and DS18B20 only have a per line conjunction. For read and write and the temperature conversion can acquire energy from the data line, dont need to circumscribe the power. Because each DS18B20
16、includes a special ordinal number, several ds 18 bs 20 seses can be existed to a total line at the same time. This makes the temperature spread a feeling machine to place in many different places. Its use is a lot of, include an air condition environment control, detect equipments inside the building or machine, and carry on process monitor and control.The DS18B
