ABB AX400 Series User Manual

Also see for AnalyzeIT AX460: User guide User guide Manual User guide User guide

Contents

ABB AX400 Series User Manual Manual pdf 25 page image

Single and dual input analyzers for pH/Redox (ORP)AX416, AX436, AX460, AX466 & AX468 4 SetupIM/AX4PH Rev. P 234.1.4 Automatic, Single- and Two-Point Calibration (pH Only)Sensor A: Buffer Method (pH probes only)Select the type of automatic calibration required:Auto 1-PtAuto 2-Pt––Automatic, single-point calibrationAutomatic, two-point calibrationCalibrate Buffer (Single-Point Calibration) or Calibrate Buffer 1 (Two-Point Calibration)Immerse Sensor A in the buffer solution.Press the key to initiate calibration.Note. To abort calibration, press the key again at any time before calibration iscomplete – see below.The center display line shows the measured sensor output in millivolts.As calibration proceeds, a progress indicator appears in the lower display line. Whenthe measured sensor output stabilizes, the lower display line shows##### 100 % #####.The display then changes for 2 seconds to show the temperature-corrected buffervalue in the upper display line, then advances automatically to the next frame.Two-point calibration selected – continued on next page.Single-point calibration selected – continued on next page.Abort CalibrationSelect Yes or No.Yes selected – return to the main menu.No selected – calibration continues.CalibrationMessage Min. Max. Explanation ActionCalibrationPassed 40 to 70 % 105 % The new calibration coefficients are accepted NoneCalibrationLow Slope 60 to 90 % 60 to 90 % The new calibration coefficients are accepted The electrode pair are becoming fatigued– replacement is recommendedCalibrationFailed 0% 40 to 70 % The new calibration coefficients are ignored and thelast known valid calibration coefficients are usedCheck buffer values and repeat buffering.If the fault persists, replace the electrodesTable 4.1 Calibration Messages9999$$:9999/ // '5-&*66*-+*.- // '5-& // '5- -*'552!E*-'55