27Restore factory settingsThis item allows to reset all “System Setup” and“Measurement Setup” parameters to their de-fault values.• Select the “Restore factory settings” item andpress .• The meter will ask to confirm: press to confirm or to escape.NoteNoteNoteNoteNote To quit the “System Setup” mode at any time, press ESC. For all itemsfor which the new selections have been not confirmed, the meter willkeep the previous settings.3.3 TABLE OF MEASUREMENT AND SYSTEM SETUP ITEMSMeasurement SetupMeasurement SetupMeasurement SetupMeasurement SetupMeasurement SetupItem Description Default value Valid ValuesTemperature Temperature unit °C K; °C; °F; opH pH measure R R; omV of pH input mV of pH readings R R; oORP Redox measure R R; oDO % saturation Dissolved oxygen measure R R; oDO concentration Dissolved oxygen measure ppm ppm; mg/L; oConductivity Electrical conductivity Auto o; Auto; 1 μS; 0.001 mS;measure 0.01 mS; 0.1 mS; 1 mS; Auto mSActual conductivity No temperature compensated Auto o; Auto; 1 μS; 0.001 mS;conductivity measure 0.01 mS; 0.1 mS; 1 mS; Auto mSResistivity Resistivity measure MΩ·cm Ω·cm; kΩ·cm; Ω·cmTDS Total dissolved solids Auto o; Auto; 1 ppm; 0.001 ppt;measure 0.01 ppt; 0.1 ppt; 1 ppt; Auto pptSalinity Salinity measure R R; oSeawater specific gravity Specific gravity measure σt o; σt; σ0; σ15Atmospheric pressure Atm. pressure measure o o; mmHg; inHg; mbar;psi; atm; kPaGPS data (*) Format of the GPS coordinates o o; xx°xx’xx.x”;xx°xx.xxx’; xx.xxxxx°