TY - JOUR
AU - Wood, C
AB - Laboratory and workshop notes A device for maintaining a small pressure against a steady leak A laboratory punip for closed circulation of humidified By J. H. PRENTICE, B.Sc., A.Inst.P., TheNationalTnstitute By c. WOOD, M.Sc., F.Inst.P.,* The British Rayon for Research in Dairying, Shinfield, Berks. Research Association, Urmston, Manchester [Note fivst received 17 March, and in final form [Note received 24 February, 19541 1 April, 19541 During an investigation of the effect of pressure, relative It was required to maintain small air pressures of the order velocity, humidity, and other variables upon the frictional of a few millimetres of mercury for several hours in an Properties of viscose fibres,? it became necessary to devise a apparatus which included a slow leak, in a laboratory from PUP which would satisfy the following requirements. which it was difficult to exclude draughts, and in which the Approximately 2 ft3 of humidified air had to be circulated temperature was liable to fairly rapid variations. The devi& per minute against an impedance equivalent to a pressure described here quite simply overcame the fluctuations due to head of some 10 in. of water, and this without undue noise. these causes. It consisted (see figure) of a 
TI - A laboratory pump for closed circulation of humidified air
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/31/10/411
DA - 1954-10-01
UR - https://www.deepdyve.com/lp/iop-publishing/a-laboratory-pump-for-closed-circulation-of-humidified-air-4BD1QZPQl1
SP - 386
VL - 31
IS - 10
DP - DeepDyve
ER -