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Technical Service Bulletins:
TSB-2010002 Date: January 27, 2010 Application: DF-550/560 Series Analyzers (NanoTrace I & II) Effective: Immediately Summary of Change: New Firmware Release 3.08 Reason for the Change: Correct the improper readings observed during and right after “autozero” calibration functions. Eliminate spikes in reading seen during extended operation on UHP gas. Description of Change: The "autozero" firmware was incorrectly obtaining electronic zero information without applying the correct offset. This contaminated the observed oxygen calculation and display. The “FIR” settings were corrected. They were improperly adjusted for the “E” sensor and an error was found and corrected in the filter buffer count.
TSB-2010001 Date: January 15, 2010 Application: DF-700 Series Analyzers – DF-760E/DF-750/DF-745/DF-740/DF-730 Effective: Immediately Summary of Change: New Firmware Release 1.1.1/3.1.1 Reason for the Change: Improvements to the moisture cell and gas delivery system heater control circuitry, modifications to the oxygen sensor installation procedure, modifications to the reporting of system errors and addition of a logged pump test feature. A purifier safety interlock addition to prohibit purifier engagement when unsuitable/incompatible purifier and sample gas combination exists. Description of Change: The temperature control algorithm was improved to eliminate errors resulting in lock stability and other system anomalies. A new screen was added to enable the manual entry of oxygen sensor data without the need for floppy or USB media. The possible system errors were scaled down in number and redefined. Serious errors have an asterisk (*) indicating to contact the factory. Variations in the efficiency of the vacuum pump resulted in the development of a pump capacity test to determine the condition of the pump and the resulting flow of process gas through the analyzer. A pump rebuild is automatically recommend if the result is below a standard minimum value. The results of the test are stored in a new pump test log. The term Download Diagnostics has been changed to Download System Data to eliminate the connotation that the analyzer has the ability to diagnose its own condition. A complete “System Data” review helps diagnose any issues and accordingly indicates the condition of the instrument. A purifier safety interlock was added for use of the Delta F “Black” purifier in all DF 700 series products. The interlock prevents possible harm to personnel and equipment by unsafe use of the purifier. Specifically, high oxygen content gas is not allowed to flow through an incompatible purifier preventing possible hazards of an exothermal reaction.
TSB-20090528 Date: May 28, 2009 Application: All DF300 and DF-300E Series Analyzers Effective: Immediately Reason for the Change: To improve the stability of the new span point accepted by the analyzer when the User Span function is utilized. Description of Change: In previous versions, the DF 300 and DF 300E series firmware was quickly taking sensor temperature readings while in the User Calibration screen. The polling, or inquiry rate, from the processor exceeded the temperature sensor’s response rate which caused the temperature reading to be a little higher or lower than the actual temperature. This error resulted in an increase (or decrease) in oxygen reading after exiting the User Calibration screen. Although the error was within analyzer specifications, it did not provide the accuracy that has been expected of the Delta F analyzer. There are no changes to the user interface and/or operation of the instrument. The new firmware version for the DF 300 series is number v1.61. Contact the factory for upgrade information.
TSB-20090113 Date: January 13, 2009 Application: Oxygen Sensors in PNT/PNT II/DF-550(E)/DF-560(E) Analyzers Effective: Immediately Summary of Change: New Recommendation for Maximum Electrolyte Level Reason for the Change: It has been determined that if the electrolyte level is too high (at the current MAX line), the sensor output may become noisy. Description of Change: The maximum level of the electrolyte in the sensor tank should be limited to 0.35 inches (8.9mm) below the top of the label on the side of the tank. See the Figure below. A line may simply be drawn on the tank/label at this point, or customers may request labels to put over the existing label which lowers the “MAX” line to the proper point. Sensors shipped since January 2008 have a new label with the MAX line located at the proper point. The location of the MIN line is not affected by this change. Contact Delta F to request label overlays as shown, or to request additional information.
TSB-20081015 Date: October 15, 2008
TSB-2008001 Date: February 1, 2008 New Instruction: At the time of initial startup of all Delta F oxygen sensors, the electrolyte should be poured into the sensor and allowed to sit for 60 minutes before gas and voltage are applied.
TSB-2007905 Date: September 5, 2007 NOTE: These changes only affect DF-760 systems. But Delta F highly recommends that sites with multiple 700 series instruments be upgraded to the same firmware revision to insure optimum analyzer performance and factory support.
TSB-2007601 Date: June 18, 2007
TSB-20061201 Date: December 18, 2006 2. Improved Diagnostic Data Download: The diagnostic download now creates a single compressed file to include all data files. The diagnostic information has been enhanced and now contains data for 7 days from the date of the requested download (instead of 2 days) and also a critical parameter trending file (new feature). The trend file is automatically created during the upgrade and update weekly. The diagnostic download now creates a single compressed file to facilitate data transfer. 3. Service Enhancement: Several features added to improve serviceability. For example, a new menu item was added to Service Menu to reset the laser temperature to the factory setting or adjust it to a new setting. These features require the user to contact Customer Service. This enhancement does not affect the system operation and is meant to be a Service Only item. 4. Oxygen Sensor Diagnostic Menu: The Polarization Voltage item was removed for the menu since the output was not precise enough to help diagnose a problem with the oxygen sensor. This menu now displays the Electrolyte, Temp and Flow only. This change does not impact system operation and is for diagnostics only. 5. Fan Alarm Update: The Fan Alarm routine was changed to eliminate a condition that would indicate a Fan Alarm Status when the fans were operating properly. This enhancement is recommended to eliminate a possible nuisance false alarm status. |
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