Hanna Instruments Gro Line HALO 2 Instruction Manual

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6 GENErAL OPErATiONS 5. GENERAL OPERATIONSTurning the Tester On & Off• Turn the tester face down. Rotate the battery cover on the back of the tester counterclockwise and set it aside. Removethe battery insulation film.• Press the ON/OFF button to turn the tester on or off. Initialization screen displays all LCD segments, followed by thebattery percentage. The tester enters measurement mode. Before the tester turns off, “OFF PWR” is displayed briefly.• Press and hold the ON/OFF button to turn the tester off when connected to Bluetooth.Battery Replacement1. Turn off the tester.2. Turn the tester face down and rotate the battery cover counterclockwise. Set it aside.3. Press the metallic pin to push old battery out.4. Place the new battery with positive (+) sign facing out.5. Reset the date and time in the setup menu or connect to the Hanna Lab App to update itautomatically.6. Align the mark on the cover with the open lock icon ( ) on the case. Rotate the coverclockwise until the mark on the cover aligns with the closed lock icon ( ).Note: Only use specified battery type. Dispose of old battery in accordance with local regulations.6. SETUPThe Setup button is located inside the battery compartment. After Setup configuration, replace the cover.Setup Menu Navigation• Press the Setup button to enter Setup mode and navigate menu items.• To exit Setup mode, press the Setup button after “SEt TIME” option is displayed.• Press the ON/OFF button to configure menu item options.Temperature UnitOption: °C or °FPress ON/OFF button to select desiredtemperature unit.°CTEMP °FTEMPAuto-Off IntervalOption: 8, 60 min., or “----” (disabled)To save battery life, after the selectedauto-off interval has elapsed, the tester willautomatically turn off. Press ON/OFF button toselect desired interval.8AOFF 60AOFF ----AOFFBuffer SetOption: 7.01 pH (Hanna) or 6.86 pH (NIST)Press ON/OFF button to select the calibrationbuffer set (Hanna or NIST).7.01BUFF 6.86BUFFpH ResolutionOption: 0.01 pH or 0.1 pHPress the ON/OFF button to select resolution. 0.01RES 0.1RESBluetooth ModeOption: On, PAIr, or OFFPress ON/OFF button to select Bluetoothoption at start-up. & OnBLU & PAIrBLU & OFFBLUMetallic pin