pH- and ORP measurement with standard electrodes - Martens ...

60Alarm AL2 OOFFQMR1 QMR2 QSALAlarm function AL2.The alarm AL2 can be deactivated or assigned to the measurement range 1 or 2 or to collectivealarm (SAL).$Settings for switching performance, setpoint and hysteresis of the alarm outputs areidentical for AL1 and AL2 if MR1 or MR2 is selected.Collective alarm61MAX glass imped.QOFFOONIf an error occurs the depending alarm-message is displayed in the process display.Monitoring of the maximum glass impedance (for example break of wire).62Glasimp.SetpntMAX38MΩ200MΩSetpoint of the maximum glass impedance.The currently measured impedance of the glass electrode is displayed in the first line.The second line displays the setpoint (MAX Point)Setting possible in the range 1...1000 MΩ63MIN glass imped.OOFF QONMonitoring of the minimum glass impedance (for example shorted line or break of glass).64Glasimp.SetpntMAX38MΩ5MΩSetpoint of the minimum glass impedance.The currently measured impedance of the glass electrode is displayed in the first line. Thesecond line displays the setpoint (MIN Point)Setting possible in the range 1...1000 MΩ. It is recommended to program a 1/5 of the measuredimpedance65MAX ref. imp.OOFF QONMonitoring of the maximum reference impedance(only possible with connected liquid ground).Monitoring of dirty diaphragm.66Refimp. 9.8kΩSetpntMAX 50.0kΩSetpoint of the maximum reference impedance.The currently measured impedance of the glass electrode is displayed in the first line. Thesecond line displays the setpoint (Max Point)Setting possible in the range 0.1...100.0 kΩ. It is recommended to program 5-times the valueof the measured impedance.67Calib. interval100Tg-> 50TMonitoring of the calibration interval.Setting possible from OFF, 1 ... 1000 days.Left area shows calibration interval.Right area shows the remaining days of the interval.continuepage 20- 19 -