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Scope of application of Shanghai Yetuo low-temperature tank
The Shanghai Yetuo low-temperature bath and low-temperature constant temperature bath are widely used in fields such as biotechnology, medicine, food, chemical engineering, metallurgy, chemical analysis, and petroleum. Provide users with a high-precision, controlled, and temperature uniform testing tool. It is an ideal low-temperature constant temperature bath for research institutes, universities, factory laboratories, and quality inspection departments.
Main technical indicators
The technical parameters of Shanghai Yetuo low-temperature bath include: temperature control range, temperature control accuracy, bath volume, digital display resolution, pump flow rate, and working voltage. These parameters are the main basis for selecting a suitable low-temperature bath, among which the temperature control range and bath volume are the main selection parameters. The temperature control range generally includes different temperature ranges such as -5~100 ℃, -10~100 ℃, -20~100 ℃, -30~100 ℃, -40~100 ℃, -50~100 ℃, -60~100 ℃, etc. The temperature can be set freely within this range; The bath capacity generally ranges from 10L to 20L, 20L to 30L, or even more. These two parameters are the main considerations for customers when choosing a low-temperature constant temperature bath. Only when the temperature and volume are determined, can we choose a suitable product for customers based on their needs.
Most low-temperature constant temperature bath products on the market now use LCD screen control panels with digital display, simple settings, easy operation, temperature calibration, alarm signal display and other functions. The cold liquid in the tank can be drawn out, and the experimental container outside the cooling machine can be cooled. Touch the soft key to quickly set the temperature, making it easy to operate. Upper window LED digital temperature measurement value; The lower window LED displays the temperature setting value. The microcomputer corrects temperature measurement deviation and has an over temperature alarm system. These are all factors considered when selecting, and most products from Hengliu can meet the needs of customers.
4、 Environmental requirements
The constant temperature bath should be placed on a sturdy workbench; No vibration and no harmful gases; The room temperature should be relatively stable and not fluctuate rapidly, which may affect the accuracy of temperature control; The room temperature should be around 25 ℃ and not exceed 30 ℃ (especially for constant temperature baths at -40 ℃, -65 ℃, and -80 ℃). Excessive room temperature can affect compressor heat dissipation, reduce refrigeration efficiency, and easily cause malfunctions; If you feel that the cooling rate of the constant temperature bath slows down after working for a period of time, you should remove the plastic mesh plate of the constant temperature bath and clean the dust on the compressor and heat dissipation plate.
5、 Precautions for use
1. Add liquid medium into the tank before use, and the liquid level of the medium should be about 30mm lower than the worktable; A low liquid level can damage the heater when powered on.
2. The selection of liquid medium in the tank should comply with the following principles:
① When the working temperature is between 5-85 ℃, water is generally used as the liquid medium;
② When the working temperature is between 85-95 ℃, a 15% glycerol aqueous solution can be used as the liquid medium; Oil should be used when approaching or reaching 100 ℃;
③ When the working temperature is below 5 ℃, alcohol or freezing liquid is generally used as the liquid medium;
3. After the cooling switch is turned off, the cooling switch should be turned on again with an interval of 15-25 minutes (depending on the ambient temperature);
4. Power supply: 220V 50Hz, the power supply should be greater than the total power of the instrument, and the power supply must have a good "grounding" device;
5. The instrument should be placed in a dry and ventilated area, with no obstacles within 300mm around the instrument;
6. When the working temperature of the constant temperature bath is low, attention should be paid not to enter the bath with hands to prevent frostbite;
7. After use, place all switches in the off state and cut off the power supply;
8. The instrument should be regularly cleaned to maintain the cleanliness of the workbench and operating panel;
9. Regularly observe the liquid level in the tank. When the liquid level is too low, liquid medium should be added in a timely manner.
