This instrument is designed and made as per standards GB/T12579 Determination of foaming characteristics of lubricating oils and ASTM D 892 Standard Test Method for Foaming Characteristics of Lubricating Oils. It is used to determine the foaming tendency and stability of lubricating oils.

1. The instrument adopts all-in-one structure. 

It includes three parts: low temperature test part and it's control, high temperature test part and it's control, a portable cooler for low temperature test part.

2. The temperature controller has parameters modifying function. If there is bias between showing temperature and testing temperature,it ca be corrected by this function.

3. The instrument equips an automatic timing alarm. 

Power supply	AC(220±10%)V, 50Hz
Constant temperature heating power	650W
Auxiliary heating power	1000W
Cooling power	500W
Air flow rate	(94±5)ml/min,adjustable
Temperature control range for high temperature bath	(Room temp.~99.9)ºC
Temperature control range for low temperature bath	(5~99.9)ºC
Temperature control accuracy	±0.5ºC
Timer	5min and 10min,accurate to second
Timing accuracy	0.01%+0.05s(20ºC)
Ambient temperature	(-10~+40)ºC
Relative humidity	≤85%