New type of deepsea microorganism sampler system with multilayer membranes

LI Wei, GU Linyi, WU Xinran, CHEN Jiawang
(State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China)

Abstract: The present deepsea microorganism sampler is defective in samples purity. Aiming at improving the purity of samples, a new type of deepsea microorganism sampler system was introduced, which features multilayer membranes. The system also included a telescopic sampling tube set which was very helpful in precise position sampling, a seawater resistant plunger pump and a temperature measurement device. All parts of the system were modulardesigned, which were very friendly for using in underwater vehicles. The system was tested in the South China Sea trial in October, 2010. The experimental results indicate that the sampler system functions normally and meets the design requirements.
Key words: deepsea microorganism； pressure maintaining sampling； accumulator； pressure compensation