68AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B…15 Calibration procedures… pH/Redox/ORP calibration… In Process calibration (pH)Sample complete1 At the Calibrate level, press the key:The Calibrate menu is displayed:2 Use the / keys to select the sensor to be calibrated,for example, S1 :pH/Redox (ORP) and press the key.The menu options for S1 :pH/Redox (ORP) are displayed:3 Use the / keys to select Collection Complete and pressthe key.The Collection Complete menu is displayed:4 Press the key.The Sample Complete screen is displayed with a promptto enter a pH value:5 Press the key and enter the value of the pH sample fromthe lab.6 Press the key twice.7 The Collect Sample screen is displayed with a promptto enter a temperature value:8 Press the key and enter the value of the pH sample fromthe lab.When the procedure is complete, a confirmation screen isdisplayed:9 Press the key to return to the Calibrate level.In Process calibration is now complete.CalibrateBack SelectS1 : pH/Redox (ORP)S2 : pH/Redox (ORP)Set Auto pH BuffersHold OutputsS1 :pH/Redox (ORP)Back SelectSensor CalTemperature CalEdit CalSample CollectionCollection CompleteRestore DefaultsCollection CompleteNextCollection CompleteEnter Lab ResultsSample CompleteEnter pH Value7.00 pHNext EditSample CompleteEnter Temp Value25.0 °CNext EditSample CompletepH 4.61 pHTmp 23.3 °CProcedure CompleteExit