Hanna Instruments HI 98160 Instruction Manual

Also see for HI 98160: Instruction manual

Contents

5FUNCTIONAL DESCRIPTION1) Socket for temperature probe2) RS232 connector3) BNC connector for pH electrode4) Liquid Crystal Display (LCD)5) ON/OFF key, to turn the meter on and off6) ALT key, to alternate key function7) RANGE / GLP key, to select measurement ranges, to display timeand date, and to view calibration data (with ALT)8) CAL / AutoEnd key, to enter pH calibration mode or (with ALT)to enter Auto Endpoint mode9) / CFM key, to move down or confirm values (with ALT)10) LOG / RCL key, to store or recall measurements (with ALT)11) / FNC key, to move up or enter setup mode (with ALT)12) LIGHT / DEL key, to turn the LCD backlight on and off and todelete stored data (with ALT)ON / OFFALTLIGHTHI 98160Microprocessor Logging pH/ORP MeterLOGRANGE CALFor refillable electrodes:Refill it with fresh electrolyte (HI7071 for single junction or HI7082 fordouble junction). Allow the electrode to stand upright for 1 hour.Follow the Storage Procedure above.CLEANING PROCEDUREGeneral Soak in Hanna HI7061 General Cleaning Solution forapproximately 1 hour.Removal of films, dirt or deposits on the membrane/junction:- Protein Soak in Hanna HI7073 Protein CleaningSolution for 15 minutes.- Inorganic Soak in Hanna HI7074 Inorganic CleaningSolution for 15 minutes.- Oil/grease Rinse with Hanna HI7077 Oil and Fat CleaningSolution.IMPORTANT: After performing any of the cleaning procedures rinsethe electrode thoroughly with distilled water, drain and refill thereference chamber with fresh electrolyte, (not necessary for GEL filledelectrodes) and soak the electrode in HI70300 Storage Solution forat least 1 hour before taking measurements.TROUBLESHOOTINGEvaluate your electrode performance based on the following possibilities.ï Noise (Readings fluctuate up and down) could be due to:- Clogged/Dirty Junction: Refer to the Cleaning Procedure above.- Loss of shielding due to low electrolyte level (in refillableelectrodes only): refill with fresh HI7071 for single junction orHI7082 for double junction electrodes.ï Dry Membrane/Junction: Soak in Storage Solution HI70300for at least 1 hour.ï Drifting: Soak the electrode tip in warm Hanna SolutionHI7082 for one hour then flush tip with distilled water. Refill withfresh HI7071 for single junction electrodes and HI7082 for doublejunction electrodes.ï Low Slope: Refer to the cleaning procedure above.ï No Slope: Check the electrode for cracks in glass stem or bulband replace the electrode.ï Slow Response/Excessive Drift: Soak the tip in Hanna Solu-tion HI7061 for 30 minutes, rinse thoroughly in distilled waterand then follow the Cleaning Procedure above.28