Hanna Instruments HI5321 Instruction Manual

Also see for HI5321: Instruction manual Instruction manual

Contents

Hanna Instruments HI5321 Instruction Manual Manual pdf 43 page image

43CALIBRATION MESSAGES• Wrong standard solution. Check the standard solution. This message appears when thedifference between the reading and the value of the selected standard is significant. If thismessage is displayed, check if you have selected the appropriate calibration standard.• Wrong standard temperature. This message appears if the standard temperature is out ofthe allowable standard temperature range (0 ‑ 60 °C).• The current range was already calibrated. Change the standard solution. The calibrationfor this conductivity range was already done. Please change the standard.• Press to clear old calibration. Clear the offset of the electrode calibration.• Press to clear old calibration. Clear all old calibrated standards.Make sure the instrument has been calibrated before taking conductivity measurements.DIRECT MEASUREMENTTo measure the conductivity of a sample using the Direct reading mode:• Press and then to select conductivity measure mode.• Select the Direct reading mode (see Conductivity Setup).• The conductivity probe should be rinsed with deionized water.• Shake off excess water.• If possible rinse probe with a sample of solution to be tested. Swirl and raise and lower probein this rinse solution.• Insert probe in center of a beaker with the sample,away from the wall or bottom of beaker. The uppervent holes must be covered with solution.• Gently stir solution and wait for probe to reach thermalequilibrium with the sample.• Tap probe repeatedly to dislodge any air bubbles thatmay be trapped inside the sleeve. Allow time for thereading to stabilize.• The measured conductivity value will be displayed onthe screen.Note: When a cell constant value is used, the solution calibration will be cleared. A solutioncalibration can still be made after entering a cell constant value.CONDUCTIVITY MEASUREMENT