Teledyne BDS-3000 - Oxygen analyzer - Manual (Page 51)

Oxygen Analyzer Operation
Teledyne Analytical Instruments 37
• Version: Displays Manufacturer, Model, and Software
Version of instrument.
• Xout: This function provides the capability for the analog
output to track negative readings, by introducing an offset on
the zero baseline.
• Neg: The operator selects whether display can show
negative oxygen readings or not.
• TRAK/HLD: The oper ator sets whether the instrument analog
out puts t rack t he concentration change during calibration and
set s a ti me del ay for the concentration alar ms aft er cal ibrati on.
• Filter: This is to set the response time of the digital filter in
the LO range.
• GasBkgn: Set the gas correction factor. This function adjusts
the calibration of the sensor when the background gas is changed.
• Trbsht: Displays useful information for troubleshooting
purposes.
• TempComp: Compensates the zero baseline temperature
drift by setting the temperature coefficient of the sensor in
ppb/degrees C.
• Temperature: Displays sensor temperature.
4.3.1 Tracking Oxygen Readings During
Calibration and Alarm Delay
The user has the option of setting the preference as to whether the
analog outputs track the display readings during calibration or not. To
set the preference, press the System key once and the first System menu
will appear in the VFD display:
TRAK/HLD Auto-Cal
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TRAK/HLD should be blinking. To enter this system menu press
the ENTER key once:
Output Sttng: TRACK
Alarm Dly: 10 min