Low temperature thermostat, also known as low temperature thermostat bath, is a high-precision constant temperature source with refrigeration and heating, and has the function of a small chiller. Widely used in petroleum, chemical industry, metallurgy, medicine, biochemistry, physical properties, testing and chemical analysis and other research departments, universities, factory laboratories and measurement and quality inspection departments. Depending on the size of the opening of the tank, a constant temperature experiment can be carried out in the bath, or it can be connected to other equipment through a hose and used in conjunction with a constant temperature source. Inner circulation: The liquid medium in the tank is circulated through the pump to increase the uniformity of the temperature in the tank and reduce the temperature fluctuation. External circulation: through the circulation capacity of the pump, the insulated hose is connected to the external equipment by the water outlet to form a closed loop, which flows back to the equipment inlet, which leads the constant temperature medium in the tank to establish an external constant temperature field. Application fields of circulating water constant temperature: Biochemical field: Rotary evaporator, Abbe refractometer, polarimeter, atomic absorption, ICP-MS, ICP, nuclear magnetic resonance, CCD, biological fermentation tank, chemical reactor (synthesizer), etc. Material field: electron microscope, X-ray diffraction, X fluorescence, vacuum sputtering plating, vacuum coating machine, ICP etching, various semiconductor equipment, fatigue testing machine, chemical deposition system, atomic deposition system, etc. Medical field: superconducting magnetic resonance, linear accelerator, CT, low magnetic field nuclear magnetic resonance, X-ray machine, microwave therapy machine, medical cold cap, cooling blanket, etc. Physical and chemical fields: lasers, magnetic fields, various molecular pumps, diffusion pumps, ion pumps, and including materials. Various water-cooling equipment used. Low temperature antifreeze ratio A glycol aqueous solution: glycol / water 55/45 (-30 ℃), 70/30 (-40 ℃) B Glycerol aqueous solution: Glycerol / water 70/30 (-30 ℃) The density of the low-temperature antifreeze liquid should be checked frequently to ensure that it meets the following requirements: 1. Ethylene glycol aqueous solution: P20 = 1079㎠/ m3 ( -30 ℃) (-40 ℃) 2. Aqueous solution of glycerol: P20 = 1182.6㎠/ m3 (-30 ℃) When the antifreeze is replaced with water, the minimum temperature must be above 0 ℃. Cooling water type selection: Generally, small-scale circulating water cooling thermostats with cooling capacity below 1000W are widely used in laboratory condensing devices such as low-power lasers, parallel evaporators, parallel quantitative concentrators, parallel reactors, and distillers. Medium-sized circulating water-cooled thermostats with a refrigeration capacity below 6000W are widely used in analytical instruments such as AAS, ICP, ICP-MS, and electron microscopy. Rotary evaporators, Soxhlet extraction, solid-liquid extraction instruments, Kjeldahl nitrogen analyzers and other laboratory equipment , Laser marking machine, laser cutting machine and other laser instruments and machine tool industries. Large-scale circulating water-cooled thermostats with a refrigeration capacity of more than 10KW are widely used in X-diffraction instruments, magnetic mass spectrometers, fatigue testing machines, vacuum coating machines, plastic forming equipment, laser cutting machines, X-fluorescence spectrometers, infrared spectrometers, and differential thermal analysis Instruments, nuclear magnetic resonance and other equipment with high refrigeration constant temperature requirements. Application range: Cooling of the heating part of semiconductor manufacturing equipment: single wafer cleaning and reprinting, printing machine, automatic holder mounting device, spraying device, ion plating device, etching device, single wafer processing device, slicer, packaging machine, developer temperature management , Exposed light device, heating device of magnetic generating part, etc. Cooling of the heat generating part of the laser device: laser processing, heat generating part of the welding machine, laser marking device, generating device, carbon dioxide laser processing machine, etc. Cooling of heating parts of other industrial equipment: plasma welding, automatic packaging machine, mold cooling, washing machine, gold plating tank, precision grinding machine, injection molding machine, molding part of resin molding machine, etc. Analysis and cooling of the heat generating part of the machine: light source of electron microscope, light source part of ICP emission spectrometer, heat generating part of spectrophotometer, heat source of X-ray analysis device, heat generating part of automatic pulse amplitude modulator Wait. The water tank can be cooled with high-quality pure water inside and outside the machine, which can ensure the normal operation of precision instruments with high water quality requirements and extend the service life of precision instruments. Frequently Asked Questions: 1. The water cycle is normal for more than a year, but now the cooling rate seems to be slower and slower, the more obvious it is when the temperature is higher? Answer: Water recycling is very simple, but regular maintenance work cannot be ignored. There are many seemingly faulty problems that are caused by failure to do regular maintenance. The electrical power of the water cycle and the heat taken by the refrigerant from the load need to be removed from the radiator at the front vent hood. If the front vent hood is full of dust and willow cotton, etc. will hinder the dissipation of these heats, and the cooling effect will be Great discount. Generally speaking, the decrease in cooling capacity under normal use conditions is caused by poor ventilation and heat dissipation or high ambient temperature. 2. The water cycle was used normally in the past, but now the noise is much louder than before, what is the reason? Answer: I mentioned the routine maintenance of the water cycle before, and this issue is also related to it. Everyone knows that there are very few impurities in the water. Even if distilled water is added to the water tank, it is impossible to guarantee that there is no impurity at all. For the water cycle, the general temperature is set at 20 ℃, especially adapted to the growth and reproduction of microorganisms. After a long time, these microorganisms will block the filter of the waterway and cause the backwater to be poor, and the pump will have a loud noise. Sometimes these microorganisms are attached to the surface of the heat exchanger, causing the heat transfer effect of the heat exchanger to deteriorate and the cooling capacity to become smaller. Therefore, the daily maintenance work must be done in strict accordance with the requirements in the manual, the inner tank should be cleaned regularly, and the tank should be kept dry for a long time. There seems to be water leakage in the water circulation, and sometimes there will be a few drops on the ground for a while. Is there any leakage on the waterway? Generally speaking, during normal use, there will be no leakage in the waterway. When the relative humidity in the air is relatively high and the relative humidity in the air is too large, dew condensation is easy to condense at the water pump, water pipe joints, and external water pipes in the water circulation circuit. After accumulating, it will drip onto the ground. Do n’t worry about it in the waterway Leaking place. If you care about this, turning on the air conditioner to lower the room temperature or dehumidifying can avoid dew. For more information about the cryostat, please pay attention to the booth of Shanghai Guige Industrial Co., Ltd. http: //
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