njnsf回复于2007/05/22
您好!
这是接上面的,请参考谢谢!
5. Relay relay with the heater and contact thermometer connected to play a role in temperature control. Laboratories have used the Relay Relay tubes and transistors Relay. Constant temperature water bath to measure the quality of good and bad, hot water can be used to measure the sensitivity. Usually measured by the maximum temperature and minimum temperature difference between the value of the numerical half to show its sensitivity. 4. Use one. Before the initial use, the thermostat should be given the power plug Multimeter used for a safety inspection, one of the measuring resistor block. Plug compatible volume, medium, whether between short circuit or insulation ill. 2. In accordance with the regulations by adding distilled water (water from the cover of about 30-43 mm) to the power plug connected to the electricity. open the control box on the power switch and electric pump switches, so that the water cycle convection tank. 3. Adjust to the hot water temperature setting. Assumed room temperature to 20 ° C, wishes to set temperature 25 ° C, the regulation is as follows : Rotary first open contact with the mercury thermometer adjust the top screw caps lock screws, and then rotating magnetic screw cap regulation, Nut instructions so that the temperature at about wishing to set below the experimental temperature 2-3 ° C (such as 23 ° C), Open heater switch heating (heating time for the savings, preferably on different machines than the required temperature thermostat a few degrees lower in water), If the water temperature and the temperature difference between larger, High-power ahead with heating (instrument panel heater switch in the "links" position), when the water temperature close to the temperature setting, switch to low-power heating (instrument panel heater switch in the "heat" position). Watching the thermometer readings, reached 23 ℃, again rotating magnetic screw cap regulation, make contact with the mercury in just connected and disconnected state (light at the prescribed temperature when eliminate). At this point slowly heating until the temperature up to 25 ° C, then tighten the screw lock. 4. For use environment below room temperature thermostat can be used on a condenser tube cooling, can be applied and thermostats same electric water pump to a tube with a rubber tube into the condensate from the mouth to introduce within the refrigeration condenser tube and rubber hoses in the tubes add a folder to control the flow of cold water, Introduction cooling with cold water can only reach between 20-15 ° C and keep electric heating switch turned off. 5. Heating thermostat, preferably distilled water and not to use well water, river water and springs and other hard water. still have to use tap water after each use this for internal and external cleansing to prevent the accumulation of Wall furring affect temperature sensitivity. 5, hot water sensitivity curve of a drawing. Principle of many physical and chemical data are measured in constant temperatures. Want to control temperature, usually with the following two methods : First, the use of phase change temperatures to achieve the second is the use of electronic control system, of the heater or cooling for the state automatically adjusted to achieve the temperature goals. The experiment used by the hot water heater on electronic relay automatically adjusted to achieve the purpose of temperature control. When the hot water for heat outward proliferation caused the temperature below the set value, the relay forced heater heating, When the system again to set temperature, heater stop heating. This cycle, we can make certain temperature within constant. Ordinary hot water from the structure of the bath, thermometers, blenders, heater, thermometer and relay contacts and other components. 2. Experimental data processing of the Digital Beckman thermometer to measure the temperature every 30 seconds a numerical mind, A total of mind for half an hour, 61 data. With its counterparts in two hours or two firms to import, such as the importation of the first line, second line input temperature. Input has been completed, all data selected, choose "insert" the "table", or click the column "chart" symbol. A dialog appears, choose the "standard type" of the "XY plot" in the dialog that appears, choose the first plan under the second, or a bit of curve, and then click "completion" can be. Right click on the blank space, and choosing "Chart options," we can chart shows the name and on behalf of the axes of meaning and units can also choose the grid format. 2-axis in the vicinity of right-click, can adjust the axis coordinates of the calibration, font size. As relatively simple, here is not the details. On maps to identify the highest point and the lowest point T2 T1, sensitivity calculation formula for S = T2-T1/2. From the data and drawings seen T2 =35.212, T1=35.133. S = T2-T1/2=0.0395.
闲鹤野云回复于2007/05/22
原文由 christe 发表:
超级恒温水浴
Super Isothermo Water Bath
一.使用范围 Use Range
超级恒温水浴(以后简称恒温水浴)适用于生物、化学、物理、植物、化工等科学研究上直接加热和辅助加热的精密恒温之用。
Super Isothermo Water Bath is suitablr for direct and supplementary heating in scientific research in biology, chemistry, physics, plant and chenmistry industry field
二.结构 Structure
普通恒温水浴的结构是由浴槽、温度计、搅拌器、加热器、接触温度计(或称导电温度计)和继电器等部分组成。其结构图、装置示意图、实物图如下:
Common isothermo water bath is made up of ......
三.工作原理 Working Principle
有点长,楼上的花了不少时间,值得感谢了。太晚了,我只开个头。
原文由 christe 发表:
超级恒温水浴
Super Isothermo Water Bath
一.使用范围 Use Range
超级恒温水浴(以后简称恒温水浴)适用于生物、化学、物理、植物、化工等科学研究上直接加热和辅助加热的精密恒温之用。
Super Isothermo Water Bath is suitablr for direct and supplementary heating in scientific research in biology, chemistry, physics, plant and chenmistry industry field
二.结构 Structure
普通恒温水浴的结构是由浴槽、温度计、搅拌器、加热器、接触温度计(或称导电温度计)和继电器等部分组成。其结构图、装置示意图、实物图如下:
Common isothermo water bath is made up of ......
三.工作原理 Working Principle
有点长,楼上的花了不少时间,值得感谢了。太晚了,我只开个头。