Hach TitraLab AT1102 User Manual

Also see for TitraLab AT1000 Series: Basic user manual Basic user manual

Contents

Hach TitraLab AT1102 User Manual Manual pdf 37 page image

11. Two options are available during the procedure:Option DescriptionStop Aborts the calibration and no results are calculated. If selected during the ReplicateSample option, then all data in the series is lost.Skip Stops the current operation and goes directly to the next step in the procedure.Results are then calculated from calibration data available before Skip is selected.Results can be less accurate using this option.12. Push Reject or Continue.Option DescriptionReject Rejects the calibration. Select Cancel to go back to the result display or Confirmto reject the calibration. If this is the first calibration, select Confirm to reject thecalibration and use the default or previous calibration values. If this is a ReplicateStandard calibration, select Confirm to reject only the current calibration in theseries.Continue Select from one of these options:• Replicate Standard: Do the calibration again using the same standard• Save & Exit: Keep the calibration results and exit the calibration procedure• Reject & Exit: Reject the calibration results and use the default or previouscalibration values, and exit the calibration procedure7.1.3 Auto leveling calibrationThis option is only available when at least one installed application contains an autoleveling calibration method and the method is set to active. The calibration makes surethat the sample volume in the measurement cell is the same before each titration.An external pump must be installed for this procedure.1. From the home screen, select Calibration, then push Autoleveling calibration.2. If more than one application contains an auto leveling calibration method, push the upand down arrow keys to highlight the application to use, then push Select.3. Calibration information shows on the display. If necessary, select an icon for moreinformation or to change some data.Option DescriptionInformation Shows more information about the calibration.Operator Changes the operator ID. Select from a list of applicable operators.4. Make sure that the external pump and tubes are correctly installed (refer to Install anexternal pump on page 19).5. Make sure that the sensor, tubes and stir bar are correctly installed in an emptybeaker, as if preparing for a standard measurement.6. Accurately measure the necessary volume of sample and pour it into the emptybeaker.7. Adjust the position of the tube from the external pump (refer to Figure 3 on page 21)so that it touches the surface of the liquid. Then add more sample until the end of thetube is immersed in 5 to 10 mm of the liquid.8. Push Start to start the calibration.9. The leveling procedure starts and sample is removed for the preset time. Make surethat this time is large enough for all the necessary sample to be removed and for airto be removed for some seconds at the end.Standard operations35