Remote probe differential pressure transducer
Respiratory air flow sensor
Respiratory flow sensor
Respiratory flow sensor
Respiratory flow sensor with flow channel having a measuring...
Restriction flowmeter
Retrievable downhole flow meter
Rotameter with float guide members
Rotameter with float guides
Rotameter with read-out device
Rotameter with remote read-out device
Rotameter-type flowmeter with means for linearizing output readi
Rotary flowmeter with variable inlet
Rotary flowmeter with varying area channel