China Wholesale Air Heat Ratio Factories – LEAT-3 Measuring Instrument for Specific Heat of Vaporization of Liquid – Labor

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%.