Quiescent battery testing method and apparatus
Quiescent voltage sampling battery state of charge meter
Radiation compensator for gas sensors
Rapid determination of present and potential battery capacity
Rapid determination of present and potential battery capacity
Rechargeable battery electrode testing device
Reference electrode and a pair of electrodes for detecting the a
Remaining charge detection device for power storage unit
Remaining-capacity dispersion detecting apparatus and...
Remote conductivity sensor having transformer coupling in fluid
Remote conductivity sensor using square wave excitation
Residual capacity detecting apparatus for an electric vehicle's
Residual capacity meter for electric car battery
Resistance neutralizing system for electrochemical devices
Retaining clamp for combination valve and conductivity cell asse
Safe fluid detection in AC powered devices
Safety valve for exposing a measuring probe to a fluid
Salimeter
Salinity indicator system
Salinity measuring system