Zealchon Electronic
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1. Working Temperature: -30℃ ~ +40℃
2. Water Bath Medium: Ethanol
3. Water Bath Volume: 300 × 300 × 280 mm³
4. Average Cooling Speed: 0.8℃/min
5. Temperature Control Accuracy: ±0.5℃
6. Refrigeration Power: 1.5P
7. Heating Power: 1kw
8. Power Supply: 220V 50Hz
9. Dimensions: 680 × 530 × 1170 mm
Fill the bath with industrial alcohol (30mm from cover). Set -20℃ on the controller. Weigh 50g asphalt sample into the distillation bottle and prepare a 150ml conical flask receiver in crushed ice.
Heat using a gas lamp or electric furnace. Achieve initial distillation within 5-8 minutes. Maintain a rate of 2 drops per second. Complete the process within 25 minutes.
Weigh distilled oil and dissolve in ether. Mix with ethanol in the cooling cylinder. Place in a -20℃ bath for 1 hour for wax crystallization, then filter the precipitated wax.
Wash the wax layer with precooled ether-ethanol solvent. Use petroleum ether (50-60℃) to recover wax into a flask. Distill off solvent and dry in an oven before final weighing (0.1mg accuracy).
A: The instrument uses high-precision Pt100 sensors and controllers to maintain a temperature accuracy of ±0.5℃.
A: Thanks to the 1.5P high-power compressor, the average cooling speed is approximately 0.8℃ per minute.
A: Ethanol is typically used as the cooling medium for the water bath to reach low temperatures.
A: Yes, models equipped with a transparent glass bath allow for easy observation of the testing and crystallization process.
A: The instrument can reach deep cooling levels of -28℃ or even lower depending on the environment.
A: Yes, certain automation functions are integrated to simplify steps and reduce the labor intensity for test personnel.
