Scope Test standard: ASTM D892 This instrument is used to determine the tendency and stability of oil to produce foam, such as fuel oil, lubricating oil, gear oil, hydraulic oil. Features 1, the instrument uses a high-precision digital display temperature control mode, with high temperature control, display intuitive 2, automatic temperature control, automatic timing, air source and gas flow centralized control system, easy to operate 3, high technology content, and with a digital electronic timing function 4, the instrument uses a split, integrated combination, easy to move 5, configure the dedicated refrigeration system to meet the needs of experimental low temperature 6, the instrument configuration dedicated green pump system, no external air supply Technical Parameters 1, power supply voltage: AC220V ± 10% 50Hz 2, FDT foam properties thermostatic bath temperature: 24 ?? 93.5 ?? 3, the heater power: 2500W (93.5 ?? bathtub) 800W (24 ?? bath) 4, temperature measurement devices: platinum resistance (PT100) 5, the gas diffusion head diameter: 25.4mm ± 0.02 6, diffuser air permeability: at 2.4KPa (250mmH O) pressure is 3000 ~ 6000mL / min 7, experimental cylinder specifications: 1000mL (special cylinder)