2TABLE OF CONTENTSWARRANTY .................................................................................................... 2PRELIMINARY EXAMINATION ............................................................................ 3GENERAL DESCRIPTION .................................................................................... 3FUNCTIONAL DESCRIPTION .............................................................................. 4SPECIFICATIONS ............................................................................................. 5OPERATIONAL GUIDE ....................................................................................... 7AUTO-RANGING .............................................................................................. 9ECS/TDS CALIBRATION .................................................................................... 10CONDUCTIVITY VERSUS TEMPERATURE CHART ................................................... 12NaCl CALIBRATION .........................................................................................13GOOD LABORATORY PRACTICE (GLP) ................................................................. 14LOGGING FUNCTION ....................................................................................... 16SETUP ..........................................................................................................21TEMPERATURE CALIBRATION (for technical personnel only) ................................. 25PC INTERFACE ............................................................................................... 27PROBE MAINTENANCE .................................................................................... 31TROUBLESHOOTING GUIDE .............................................................................. 32ACCESSORIES ............................................................................................... 33WARRANTYHI 2300 is guaranteed for two years against defects in workmanship andmaterials when used for its intended purpose and maintained according toinstructions. Electrodes and probes are guaranteed for six months. Thiswarranty is limited to repair or replacement free of charge.Damage due to accidents, misuse, tampering or lack of prescribedmaintenance is not covered.If service is required, contact the dealer from whom you purchased theinstrument. If under warranty, report the model number, date ofpurchase, serial number and the nature of the problem. If the repair isnot covered by the warranty, you will be notified of the charges incurred.If the instrument is to be returned to Hanna Instruments, first obtaina Returned Goods Authorization number from the Technical Servicedepartment and then send it with shipping costs prepaid. When shippingany instrument, make sure it is properly packed for complete protection.Dear Customer,Thank you for choosing a Hanna Instruments product.Please read this instruction manual carefully before using this instrument.This manual will provide you with the necessary information for correctuse of this instrument, as well as a precise idea of its versatility.If you need additional technical information, do not hesitate to e-mailus at tech@hannainst.com or view our worldwide contact list atwww.hannainst.com.