Thermostatic water bath is generally heated by resistance wire, cooled by compressor and assisted by PID controller to maintain a relatively standard temperature, so as to achieve the experimental purpose. The temperature water bath is equipped with a low-noise DC motor, which can be directly stirred in the water tank or put the mixer into a volumetric flask. Multiple heads can be stirred synchronously or independently. 12 heads can be stirred at the same time without mutual interference. PID temperature control technology is adopted for temperature control, and a two-way temperature regulation system is adopted to display the set temperature and the temperature in the tank at any time.
If we change the heating medium from water to oil, the high temperature of the thermostatic water bath can reach more than 200 ℃ (pay attention to the demand when purchasing). The temperature control system has the function of over temperature and under temperature alarm to ensure the safety factor of the experiment. The thermostatic water bath is made of a variety of metals, so all parts (especially those made of aluminum alloy) are vulnerable to galvanic corrosion. In addition, because the materials used in factories still have some problems, many thermostatic water baths in laboratories (whether using tap water or distilled water) will be seriously corroded soon after use. Some water pumps are corroded, some sample racks are corroded, some corrosion products block the pipes, and the glassware flowing through becomes opaque. The corrosion of thermostatic water bath not only affects its service life, but also affects the correctness of the experiment.
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