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Hach Ultra ORBISPHERE 3658 Operator's Quick Manual

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Operator Quick Guide
ORBISPHERE 3658
Revision A - 28/04/2008

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Summary of Contents for Hach Ultra ORBISPHERE 3658

  • Page 1 Operator Quick Guide ORBISPHERE 3658 Revision A - 28/04/2008...

  • Page 2: General Information

    MEAS places the instrument in inaccuracies that may be contained in this guide. measurement mode In no event will Hach Ultra be liable for direct, indirect, special, incidental, or consequential • calibrates the analyzer against a damages resulting from any defect or omission in reference sample.
  • Page 3 Automatic Data Acquisition Before starting automatic measurement storage, first select the sampling rate desired using the Sampling Rate menu of the Hach Ultra 3658 program. For the first measurement you wish to store, press button once to display a sample number.
  • Page 4 T o v i e w t h e a c t u a l g a s c o n c e n t r a t i o n To save this list of measurements as a text file, measurement value at a particular sample capable of being recalled by the Hach Ultra 3658 number, press the button. The LCD now program or imported as a file into other Windows displays the stored value for that sample number.
  • Page 5 Measurement (cont) Monitor Measurements in Real-Time You may wish to analyze a particular sampling point via the Hach Ultra 3658 program's Monitoring menu. To use this Monitoring chart, the analyzer must be connected to your PC. Choose Monitoring from the Hach Ultra 3658 menu to bring up a chart display.

  • Page 6: Instrument Configuration

    Instrument Configuration The following commands are all available from MEMBRANE SELECTION the Configuration menu in the Hach Ultra 3658 Membrane 29561A is the only membrane valid for software installed on your PC. gas measurement with this analyzer. The instrument must be connected to your PC in order to change its configuration.
  • Page 7 Instrument Configuration (cont) WINE PARAMETERS AUTOMATIC SHUTDOWN C h o o s e W i n e P a r a m e t e r s f r o m t h e Choose Automatic Shutdown Status from the Configuration menu to provide a correction for Configuration menu to activate the Automatic the alcohol and sugar content of the wine.
  • Page 8 Select Troubleshooting, Pressure Calibration • If the instrument makes two consecutive from the Hach Ultra 3658 program, and enter the measurements with less than 1% current atmospheric pressure, in mbars, in the difference, it calibrates against this calibration pressure entry box.

  • Page 9: Calibration (Cont)

    Calibration (cont) Set the gas measurement phase to Dissolved Calibration in CO at Elevated Pressure and set the calibration medium to In a liquid or a This method requires an accurate pressure gauge gaseous sample at known concentration. connected to the exit of the flow chamber. Press the button.

  • Page 10: Troubleshooting

    Troubleshooting You may wish to use the Troubleshooting menu Type a number in the Number box (you may also to make sure that the instrument is configured select one of three units positions for the LCD's correctly for your application, and is in good rightmost indicator bar as well).

  • Page 11: Troubleshooting (Cont)

    Troubleshooting (cont) The following table lists possible measurement errors. Symptom Cause Possible Solution Degassing Adjust sample flow rate Flow chamber and/or membrane not clean Clean system Sensor’s membrane not tight smooth and Replace membrane and recalibrate wrinkle free Unstable measurement No gas bubbles should escape from the purge gas outlet during measurement.

  • Page 12: Sensor Maintenance

    Sensor Maintenance Se nsor ma in tena nce inclu des memb ran e To verify if the membrane needs to be replaced, replacement and external cleaning to restore the check sensor measurements against a known original sensor sensitivity. This means low standard sample value.
  • Page 13 Sensor Maintenance (cont) Note : The membrane mounting surface must be clean and even (on top of the sensor, where the membrane and sensor have contact). Replace the membrane O-ring on the sensor head with a new one. Note : The 29039.0 Nitril O-ring can be reused if it is still in good condition.
  • Page 14 Sensor Maintenance (cont) Insert the installation tool inside the guiding sleeve. Push the installation tool firmly downwards. This clasps the mounting ring onto the sensor head, folding the membrane over the sensor tip. Remove the installation tool and guiding sleeve. Visually check for correct ring placement, try to push it down with your fingers.
  • Page 15 Page 15...

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