ECD T90 Instruction Manual
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Contents
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34Press CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)Press NO Place Sensor in CAL Solution (or leave in the process solution)Press STAND Enter ValuePress ▲ ▼ NEXT xx.xx pH (use arrows and NEXT to enter process pH value)Press OK xx.xx pH, xxx.x mV, Accept Value?Press YES OFFSET: xx.xx pH x.x mV, SLOPE: xx.xx mV/pH (this data written to Log)Press OK Back to Cal MenuPress HOME Hold is ON (Press HOLD to turn off Hold)Press HOLD Turn off HoldPress EXIT Main Display4.2 ORP CALIBRATION PROCEDURESAUTO Calibration recognizes Quinhydrone solutions (mVa), pH 7.00 quinhydrone solution (90 mV) and pH 4.01quinhydrone solution (267 mV) for automatic ORP calibrations. Any calibration solutions can be used but theORP value will have to be entered manually. Follow the steps below to accomplish an ORP calibration.4.2.1 AUTO CAL WITH QUINHYDRONEAction PromptDouble Press any Button MENU HOME, Hold is OFFPress HOLD Hold freezes 4-20 mA Output and locks Alarm Relays during CalibrationPress CAL Is this a new Sensor? (Yes erases CAL Log in INFO, NO adds CAL to existing Log)Press Yes/NO Place Sensor in CAL Solution ( use pH 7.00 Q solution)Press AUTO then CAL 1 STABILIZING, xxx.x mV, xxx.x mVa, 90.0 mV corrected Accept Cal?Press YES CAL1 Value 90.0 mV, Continue to CAL2? Move sensor to pH 4.01 Q solutionPress YES STABILIZING, 269.2 mV 267.0 mVa, 267 mV corrected Accept Cal?Press YES OFFSET: 90.0 mVa, 87 mV, SLOPE: 1.02 mV/ mVa (data written to Log)Press OK Calibration completePress HOME Hold is ONPress HOLD Turn off HoldPress EXIT Main Display4.1.2 STANDARDIZELeave the sensor in the process solution, take a grab sample from the process and determine the ORP.Action PromptDouble Press any Button MENU HOME, Hold is OFFPress HOLD Hold freezes 4-20 mA Output and locks Alarm Relays during CalibrationPress CAL Is this a new Sensor? (Yes, erases CAL Log in INFO, NO adds CAL to existing Log)Press NO Place Sensor in CAL Solution (or leave in the process solution)Press STAND Enter ValuePress ▲ ▼ NEXT xx.xx mV (use arrows and NEXT to enter process ORP value)Press OK xxx.x mV, xxx.x mV, Accept Value?Press YES OFFSET: xxx.x mV xxx.x mV, SLOPE: xx.xx mV/mV (this data written to Log)Press OK Back to Cal MenuPress HOME Hold is ON (Press HOLD to turn off Hold)Press HOLD Turn off HoldPress EXIT Main Display |
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