DEVICE FOR MEASURING PRESSURE OF SATURATED VAPORS Russian patent published in 1994 - IPC

FIELD: measuring technology. SUBSTANCE: device has hollow metal housing 1 accommodating internally bellows 2 with movable base 3. Bellows divides inner space of housing 1 into two chambers. First chamber containing bellows 2 is filled partially with reference liquid 4, composition of which is nearly the same as liquid to be analyzed. Second chamber communicates with atmosphere via holes 5. Device has also transducer for converting displacement of bellows 2 into electrical signal. Transducer is made in the form of flexible cord positioned in second chamber and containing core 6 of current-carrying rubber and coating 7 of resilient insulating material. One end of core is rigidly connected to movable base 3 of bellows 2 so, that core 6 can contact base 3. Other end of cord is rigidly secured to wall of housing 1 and free end of core 6 is insulated from wall 8 by insulating coating 7 and washer 9. Free end 10 of core 6 and housing 1 are elastically connected with input terminals of ohmmeter 11. First end of cord is fastened to movable base 3 of bellows 2 with the aid of washer 12. Device is installed on check plate of rectification column. EFFECT: improved accuracy of measurements. 1 dwg