Principles for selection of liquid medium in cryostat

Shanghai Haozhuang Instrument Co., Ltd. has developed the LNB brand low-temperature thermostat, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable

Environmental requirements 1. The thermostatic bath should be placed on a sturdy workbench; 2. No vibration and no harmful gases; 3. The room temperature should be relatively stable, and can not be changed suddenly, affecting the temperature control accuracy; the room temperature should be around 25 ℃, Do not exceed 30 ° C (especially the constant temperature baths at -40 ° C, -65 ° C, and -80 ° C). Excessively high room temperature will affect the heat dissipation of the compressor, reduce the refrigeration efficiency, and easily cause malfunctions; 4. After the constant temperature bath works for a period of time If you feel that the cooling rate is slowing down, you should remove the plastic mesh plate of the constant temperature bath to remove the dust from the compressor and heat sink. SP SP 20.0 SP ▼ 25.8 -5.0 ▲ ▼ SP -5.0 SP

Precautions for use 1. Add liquid medium into the tank before use. The liquid level of the medium should be about 30mm lower than that of the workbench; the too low liquid level will damage the heater when energized. 2. The selection of liquid medium in the tank should comply with the following principles: a. When the working temperature is 5 ~ 85 ℃, the liquid medium is generally selected water; b. When the working temperature is 85 ~ 95 ℃, the liquid medium can use 15% glycerin Aqueous solution; oil should be used when approaching or reaching 100 ℃; c. When the operating temperature is lower than 5 ℃, the liquid medium generally uses alcohol or freezing liquid; 3. After the refrigeration switch is turned off, the refrigeration switch should be turned on again with an interval of 15 ~ 25 minutes ( (Depending on the ambient temperature); 4. Power supply: 220V50Hz, the power supply should be greater than the total power of the instrument, the power supply must have a good "grounding" device; 5. The instrument should be placed in a dry and ventilated place, no obstacles within 300mm around the instrument; 6, when When the working temperature of the constant temperature bath is low, you should pay attention not to enter the bath to prevent frostbite; 9. After use, all switches are turned off and the power is turned off; 10. The instrument should be cleaned regularly to keep the work surface and The cleanliness of the operation panel; 11. Observe the liquid level in the observation tank frequently. When the liquid level is too low, the liquid medium should be added in time.

Shanghai Haozhuang Instrument Co., Ltd. is a variety of biochemical, light incubator, shaking incubator, constant temperature incubator, mold incubator, hot and cold cycler, shaker, oscillator, stirrer, water bath, centrifuge, electric heating plate. Professional manufacturing enterprise. The company integrates the research, development, production and sales of high-tech experimental instruments. Its products have eight series and more than one hundred varieties. Relying on modern science and technology, the company continuously improves product quality and launches new products to keep it up to the international level. The products are exported to all parts of the country, and have won the trust of users with excellent quality and perfect service. The employees of the company always adhere to the enterprise spirit of "unity, truth-seeking and innovation". With the tenet of "user first, quality first, reputation first", we sincerely welcome new and old customers to visit us.

We supply machinery and services to many major international companies and we have activity in the following industries:


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