How to use Shanghai Yuming cryostat.
How to use the cryostat:
Low temperature thermostat instruments use 220V AC power, please make sure the rated current of the power socket is not less than 10A before use, and have a safety grounding device (please connect the grounding device to the working room when using). When adding water, please note that it is not less than 8cm away from the upper cover. Soft water must be used, preferably distilled water. Do not use well water, river water, spring water or other hard water to prevent the heating tube from bursting and affecting the constant temperature sensitivity.
First turn on the power, set the required temperature value on the meter according to the instructions, and when the temperature reaches the set temperature, you can turn on the cycle switch, so that all programs enter the normal working state.
1. Add the liquid medium into the front tank of the low temperature thermostat, the liquid level of the medium should be about 30mm lower than the worktable, otherwise the heater will be damaged when energized;
2. The selection of the liquid medium in the low-temperature constant temperature bath should meet the following principles:
When the working temperature is 5 ~ 85 ℃, the liquid medium generally uses water;
When the working temperature is 85 ~ 95 ℃, the liquid medium can choose 15% glycerin aqueous solution;
When the working temperature is higher than 95 ° C, the liquid medium generally uses oil, and the open cup flash point of the selected oil should be higher than the working temperature by more than 50 ° C;
3. Power supply: 220V50Hz, the power supply should be greater than the total power of the instrument, the power supply must have a good "ground" device;
4. The instrument should be placed in a dry and ventilated place with no obstacles within 300mm around the instrument;
5. When the working temperature of the constant temperature bath is high, you should be careful not to open the upper cover and do not enter your hand with the hand to prevent burns;
6. After use, all switches are turned off to cut off the power supply;
The instrument should do regular cleaning work to keep the work surface and operation panel clean;
Always pay attention to observe the liquid level in the tank. When the liquid level is too low, the liquid medium should be added in time; considering the safety factors, we stipulate that the constant temperature tank above 100 ℃ is made into an internal circulation. If the external circulation is changed according to the customer's requirements, the customer should pay special attention to the firmness of the connection of the outlet pipe to prevent it from falling off to avoid burns.
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