Low temperature constant temperature cycler for external circulation

Low temperature constant temperature cycler for external circulationMain features：

1. Specially suitable for use with experimental equipment such as rotary evaporators, fermentation tanks, Abbe refractometers, electron microscopes, low-temperature chemical reaction vessels, transparent glass reaction vessels, and biopharmaceutical reactors.

2. Internal circulation/external circulation pump system, internal circulation ensures uniform and constant instrument temperature; The external circulation pump outputs a low-temperature constant temperature liquid with a flow rate of 5 liters per minute to 18 liters per minute, and a head of 4.0 meters.

3. Various containers containing biochemical reagents or test samples can also be placed in the working tank container for direct low-temperature testing or testing, achieving multi-purpose use of one machine.

4. Air cooled high-efficiency fully enclosed compressor with low noise and rapid cooling.

5. Large screen LCD display, precise temperature setting, easy and fast operation.

6. There are multiple options for digital display resolution, including 0.1 ℃, 0.01 ℃, and 0.001 ℃.

7. It has the function of correcting temperature measurement deviation.

8. Temperature over temperature protection, sensor abnormality protection, upper limit over temperature alarm, adjustable temperature, automatic protection for refrigeration system overheating and overcurrent.

Technical Specifications:

How to solve the problem of refrigeration failure in low-temperature constant temperature cycler?
Main features of low-temperature constant temperature cycler:
1. The low-temperature constant temperature cycler has an internal and external circulation function. The circulation pump can introduce the medium in the tank, establish a second constant temperature field, and play a role in cooling or maintaining the temperature of the experimental container
2. Adopting a new generation of imported fully automatic PID temperature setting program and imported temperature sensor, with high temperature control accuracy.
3. Fully enclosed imported refrigeration compressor, fluorine free refrigeration system, and with overheating, overcurrent Multiple protection devices such as overpressure..
4. The large screen LCD displays both Chinese and English, with clear data and beautiful appearance. The personalized interface makes industrial control no longer monotonous.
5. High precision temperature control technology combined with a new U-shaped dual circulation system improves temperature uniformity.
6. The body shell of the constant temperature cycler adopts mirror anti aging static spray painting technology, and the inner tank table is made of S304 stainless steel, which is clean, hygienic, beautiful and corrosion-resistant.
7. There is a drain valve on the side for easy replacement of the medium.
Low temperature constant temperature cycler is suitable for aviation, automotive, home appliances, electronics and other fields, used to test and determine the parameters and functions of electronic, electrical and other product materials under high temperature and cold environmental changes.
Recently, customers often ask why the constant temperature bath does not cool down? Is it because the refrigeration machine does not meet the standard? Below, the editor will discuss with you the factors that cause the constant temperature bath to not cool down.
We can observe whether the cold compressor can start normally during the start-up process of the constant temperature bath. If the compressor equipment can start during the operation of the high and low temperature integrated constant temperature bath, it indicates that the electrical circuit of the entire equipment is normal, and there is no problem with the electrical system in this regard. Next, we can check the refrigeration system. When checking the constant temperature bath refrigeration system, it is necessary to first check the exhaust and suction pressure indices of the low-temperature stage compressor of the refrigeration machine. If they are both lower than the normal values, it indicates that the refrigerant dosage of the main refrigeration unit is insufficient.

Low temperature constant temperature cycler for external circulationCommon problem handling
1. After using the water cycle for over a year, the cooling speed seems to be slowing down, becoming more pronounced as the temperature rises?
Answer: Water recycling is very simple to use, but regular maintenance work cannot be ignored. Many seemingly malfunctioning problems are actually caused by the lack of regular maintenance and upkeep. The electrical power of the water cycle itself and the heat carried away by the refrigerant from the load need to be discharged from the radiator at the front ventilation hood. If the front ventilation hood is filled with dust and lint, it will hinder the dissipation of this heat and greatly reduce the cooling effect. Generally speaking, the decrease in cooling capacity under normal usage conditions is caused by poor ventilation and heat dissipation or high ambient temperature.
2. After using the water cycle for a few months, I found that the noise was much louder than before. What is the reason for this?
Answer: As mentioned earlier, the daily maintenance work of water circulation is also related to this issue. As we all know, there are very few impurities in water, and even distilled water cannot be guaranteed to be free of any impurities after being added to the water tank. For the water cycle, the temperature is generally set at 20 ℃ to adapt to the growth and reproduction of microorganisms. After a long time, these microorganisms will clog the filters in the waterway, causing poor return water and making loud noise in the water pump. Sometimes these microorganisms attach to the surface of the heat exchanger, causing a decrease in the heat transfer efficiency and cooling capacity of the heat exchanger. So it is necessary to strictly follow the requirements in the manual for daily maintenance work, clean the inner tank regularly, stop using it for a long time, and keep the tank dry. There seems to be a leak in the water cycle, sometimes there are a few drops on the ground after a while. Is there a leak in the waterway? Generally speaking, there will be no leakage in the waterway during normal use. When the ambient temperature is relatively high and the relative humidity in the air is too high, dew is prone to condense at the water pump, water pipe joints, and external water pipes in the water circulation system. After accumulating too much, it drips onto the ground, so there is no need to worry about water leakage in the water circuit. If you mind this, turning on the air conditioning to lower the room temperature or dehumidifying can prevent the production of dew.