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    Home > Active Ingredient News > Drugs Articles > The temperature of the intelligent constant temperature bath at -80°C can only be reduced to -60°C. What is the reason?

    The temperature of the intelligent constant temperature bath at -80°C can only be reduced to -60°C. What is the reason?

    • Last Update: 2022-08-19
    • Source: Internet
    • Author: User
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    The condenser of the low temperature and constant temperature reaction bath is dirty: it is the place where the intelligent constant temperature bath can absorb air after runnin.
    There are many aluminum foils for heat dissipatio.
    Check if it is dirt.
    If it is dirty, clean it up and blow it with nitrogen; is it away from the wall? If it is too close, if it is close, move a little farther, because there is not enough ventilation space left, the air cannot circulate normally, and the temperature cannot be dissipated, so it cannot cool down; whether the concentration of the medium is low: after the medium is used for a period of time, condensation in the air Water will enter the medium and thicken at low temperatur.
    If the cold energy cannot pass through, the temperature will not dro.
    If the medium is very thick at low temperature and cannot flow normally, or freezes, the medium needs to be change.
    Proper operating procedures when using a cryostat Correct operating procedures when using a cryosta.
    Add liquid medium into the tank, and the liquid level of the liquid medium should not be lower than 20mm of the worktabl.
    Selection of liquid medium: When the working temperature is lower than 8 °C, alcohol is generally used as the liquid mediu.
    When the working temperature is 8 to 80 degrees, the liquid medium is generally pure wate.
    When the working temperature is 80 to 90 degrees, the liquid medium is generally water-oil mixtur.
    When the working temperature is higher than 90 degrees, oil is generally used as the liquid mediu.
    Plug in the power, turn on the "main power" switch, then turn on the power button and cycle butto.
    If the working temperature is higher than the ambient temperature, press the setting function key to enter the temperature setting value setting stat.
    The last digit of the set value is flashin.
    At this time, first press the shift key and then press the adder to set the working temperature you need, then press the set function key and save the set valu.
    At this time, the measurement shows the current liquid in the tank The temperature of the medium, after which the microcomputer enters the automatic control stat.

    Press the set function key for about 5 seconds, the upper window will display the word PASS, at this time press the plus key to input the password, press the set function key again to enter the actual correction state, and the upper window will display the word SC, if the temperature is too high, press Press the plus key, press the minus key when it is low, and then press the set function key for about 5 seconds to exit after the correction is complet.
    When the measured value reaches the working temperature, it can be stable for a period of time before experiment or tes.

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