A safety breathing apparatus has a sensor for measuring the difference in pressure between two point (1a, 1b) in the gas delivered to a head unit (9). The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.
申请公布号
WO2011051715(A2)
申请公布日期
2011.05.05
申请号
WO2010GB51803
申请日期
2010.10.27
申请人
SCOTT HEALTH & SAFETY LTD.;ZWOLINSKY, ALBERT F.;MARSHALL, RICHARD D.;HALL, CHRISTOPHER G.
发明人
ZWOLINSKY, ALBERT F.;MARSHALL, RICHARD D.;HALL, CHRISTOPHER G.