Introduction: Methods for measuring the saturated vapor pressure of fluids include dynamic (boiling-out) and steady-state methods. Among them, the dynamic method is generally used for the measurement of low saturated vapor pressure due to the pressure resistance of the container (mostly glass containers) itself, especially when the pressure is lower than atmospheric pressure; and the steady state method is used most often because the measurement is relatively simple. The universal method. The steady state method is mainly to fill the material to be tested into a closed container with an observation window, and make it in the state of coexistence of gas and liquid two phases, and then put into a constant temperature environment, and measure the temperature of the constant temperature environment to obtain different temperatures. Saturation vapor pressure data, through the observation window, can also be used to determine whether the working fluid is in a gas-liquid coexistence state during the entire experiment. The saturated vapor pressure data of a fluid is one of the key data for fitting a fluid state equation. Based on years of high-precision measurement of fluid temperature and pressure, XIATECH has developed a steady-state high-precision fluid saturation vapor pressure measurement system suitable for a wide temperature range. By using this system, the saturated vapor pressure experimental data of the temperature range of -30~120°C can be obtained automatically, and the saturated vapor pressure equation of the measured fluid can be directly given by the data analysis software, which is suitable for various refrigerants. High-precision measurement of saturated vapor pressure of fluids such as lubricants, aviation kerosene, and nanofluids. High-accuracy temperature control, temperature measurement, and pressure measurement are critical for accurate measurement of saturated vapor pressure data. Features: 1. Precise temperature control: Accurate temperature control is the basis for achieving high-precision fluid vapor pressure measurement. The temperature fluctuation in the VP series is better than ±0.05°C/30 min. 2 accurate temperature measurement: accurate measurement of temperature is one of the most critical factors, VP series of temperature measurement accuracy up to 0.01 °C; 3. Accurate pressure measurement: High-precision pressure measurement is another key factor in the measurement of saturated vapor pressure. Using high-precision pressure sensors and differential pressure transmitters, the pressure sensor VP series uncertainty is less than ± 0.7kPa; 4. Easy to observe: It is convenient for users to observe whether the sample to be tested is in the state of coexistence of gas and liquid; 5. Self-developed measurement software: It can realize temperature control, temperature measurement, pressure measurement and data processing. It can run on win10/win8/win7 systems. Technical Parameters: Measurement principle: steady state method Temperature range: -30～120°C Pressure range: 0～5 MPa Temperature measurement accuracy: <10 mK Pressure measurement uncertainty: <5 kPa Control temperature fluctuation: better than ±0.05°C/30min Data Transmission: USB Working environment: 0～40°C, ≤65%RH Power Source: 220 V 50 Hz Operating System: Win10/Win8/Win7
Introduction: Methods for measuring the saturated vapor pressure of fluids include dynamic (boiling-out) and steady-state methods. Among them, the dynamic method is generally used for the measurement of low saturated vapor pressure due to the pressure resistance of the container (mostly glass containers) itself, especially when the pressure is lower than atmospheric pressure; and the steady state method is used most often because the measurement is relatively simple. The universal method. The steady state method is mainly to fill the material to be tested into a closed container with an observation window, and make it in the state of coexistence of gas and liquid two phases, and then put into a constant temperature environment, and measure the temperature of the constant temperature environment to obtain different temperatures. Saturation vapor pressure data, through the observation window, can also be used to determine whether the working fluid is in a gas-liquid coexistence state during the entire experiment. The saturated vapor pressure data of a fluid is one of the key data for fitting a fluid state equation. Based on years of high-precision measurement of fluid temperature and pressure, XIATECH has developed a steady-state high-precision fluid saturation vapor pressure measurement system suitable for a wide temperature range. By using this system, the saturated vapor pressure experimental data of the temperature range of -30~120°C can be obtained automatically, and the saturated vapor pressure equation of the measured fluid can be directly given by the data analysis software, which is suitable for various refrigerants. High-precision measurement of saturated vapor pressure of fluids such as lubricants, aviation kerosene, and nanofluids.
