Shanghai Bilang Biotechnology shares the application skills of cryostat with you:
First, the temperature control principle of the constant temperature bath?
Answer: It automatically adjusts the heater through an electronic relay. When the temperature of the constant temperature bath is lower than the set value due to heat diffusion, the relay forces the heater to work, and when the system reaches the set temperature again, it automatically Stop heating. Use a stirrer to make the heat even. While controlling the temperature, the constant temperature controller accurately reflects the temperature value of the temperature-controlled part.
2. In order to maintain a system at a constant temperature above room temperature, there are roughly several ways?
Answer: 1. Static ideal thermal insulation between system and environment;
2. Dynamic approximate thermal insulation between the system and the environment; when the system will continuously and steadily dissipate heat to the environment, the environment continuously and steadily transfers almost the same amount of heat to the system through another method;
3. The relay-type temperature control device introduced in the experiment book.
3. Are there special requirements for the temperature and heating voltage of the water in the thermostat? Why?
Answer: The temperature of the water in the tank should not be too large from the room temperature to reduce the heat dissipation rate to the environment; the heating voltage should not be too small and too large. Otherwise, the heat dissipation speed will be too large, the heating speed will be too large, and the heating inertia will be large, which will reduce the sensitivity during temperature control. If the heating voltage is too small, the temperature of the system will be low for a relatively long time, or it may not reach the set temperature.
4. What should be paid attention to when using Beckman thermometer?
Answer: 1. It is not allowed to rotate at will. Beckman thermometer is a more expensive instrument. When using it, be bold and careful, hold it gently, and hold the middle part if necessary.
2. When adjusting, pay attention to prevent the accumulation of cold and heat, so as not to burst the thermometer.
3. The thermometer should be vertical, otherwise the capillary tube may break easily.
4. The adjusted thermometer must be placed on the thermometer holder. Do not connect the mercury column in the capillary tube with the mercury in the tank. Otherwise, it must be readjusted.
Five, how to improve sensitivity?
Answer: 1. Constant temperature medium: the medium has good fluidity and large heat capacity, so the sensitivity is high.
2. Thermometer: its heat capacity is small, the contact surface with the constant temperature medium is large, the adhesion between mercury and platinum wire and capillary wall is small, and the sensitivity is high.
3. Heater: the smaller the heating power, the higher the sensitivity.
4. Stirrer: The stirring speed must be large enough to make the temperature of each part of the constant temperature medium as consistent as possible.
5. Location of parts: The heater is placed near the agitator, so that the heat is quickly transferred to all parts. The thermometer should be placed near the heater, and the temperature measuring thermometer should be placed near the system under study.
Shanghai Bilang Biological Technology Co., Ltd. specializes in the production and sales of low temperature thermostats. The company has branches in Shanghai, Beijing, Nanjing, Xi'an, and Chengdu, and is directly responsible for customer pre-sale technical support and after-sales service. At the same time, we are also further improving our network services to solve your worries for you!
Silicone Measuring Cups INDESTRUCTIBLE CONSTRUCTION - FDA approved silicone contains no BPA, can handle extreme high & low temperatures. and will never break.
SILICONE MEASURING CUPS EASY TO CLEAN - Dishwasher safe, but only takes seconds to clean by hand. The measurements are molded into each cup, so unlike our competitors, the ink won't leak into your food.
SILICONE MEASURING CUPS ACCURATE - Set of 4 includes full cup (250mL), half cup (125mL), third cup (80mL), and quarter cup (60mL) sizes, all clearly marked in both metric and US imperial. Easy to read big numbers, as well!
SILICONE MEASURING CUPS ERGONOMIC - Thick silicone handles with dimples make these easy to grip no matter the situation. Plus, the pouring spout makes life a lot less messy.
INNOVATIVE DESIGN - Collapsible, nested design makes these the easiest measuring cups to store that you'll ever own. Flexible silicone makes pouring super easy, while eliminating messes.
SILICONE MEASURING CUPS Details:
Material:100%FDA Silicone measuring cup
Size:60ML,80ML,125ML,250ML
Weight:118g/Set
Color:any pantone color
SILICONE MEASURING CUPS Packaging: 1set per poly bag, 125 sets per carton, carton size:36.5*35*33cm, N.W./G.W.: 10.08kg/ 11kg.
Silicone Measuring Cups
Silicone Measuring Cups,Measuring Cup Set,Small Measuring Cups,Pyrex Measuring Cup
Shenzhen Feiaoda Technology Co.,Ltd , https://www.flysilicone.com