LEAT-3 Measuring Instrument for Specific Heat of Vaporization of Liquid

Experiments
1. The specific heat capacity of liquid is measured by cooling method, and the advantages and conditions of comparison method are understood;
2. The relationship between the cooling rate of thermal system and the temperature difference between the system and the environment is investigated experimentally.
Main technical parameters
1. Digital temperature sensor: DS18B20, the temperature range is 0 ~ 99.9 ℃, and two channels of measured values are displayed at the same time;
2. Five digit stopwatch with start and reset function, minimum resolution 0.01s, full range 9999s,
Automatic range conversion;
3. It can set the automatic sampling time interval and the number of sampling data, and save the data automatically with data viewing function;
4. The outer tube of the experiment was used Φ 300mm × 190mm plexiglass; Isolation cylinder: Φ 28mm × 48mm copper;
5. In the experiment, the inner tube was used Φ 22mm × 48mm copper;
6. The measurement error of liquid specific heat capacity is less than 5%.