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Optional Hardware and Software Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 82
5.11. SPECIAL FEATURES
5.11.1. DILUTION RATIO OPTION
The Dilution Ratio Option is a software option that is designed for applications where the Sample gas is diluted
before being analyzed by the GFC 7001E. Typically this occurs in Continuous Emission Monitoring (CEM)
applications where the quality of gas in a smoke stack is being tested and the sampling method used to remove
the gas from the stack dilutes the gas.
Once the degree of dilution is known, this feature allows the user to add an appropriate scaling factor to the
analyzer’s CO concentration calculation so that the Measurement Range and concentration values displayed on
the instrument’s Front Panel Display and reported via the Analog and Serial Outputs reflect the undiluted values.
Instructions for using the dilution ratio option can be found in Section 6.6.5.
5.11.2. MAINTENANCE MODE SWITCH
TAI’s instruments can be equipped with a switch that places the instrument in maintenance mode. When
present, the switch is accessed by opening the hinged front panel and is located on the rearward facing side of
the display/keyboard driver PCA, on the left side, near the particulate filter.
When in maintenance mode the instrument ignores all commands received via the COMM ports that alter the
operation state of the instrument. This includes all calibration commands, diagnostic menu commands and the
reset instrument command. The instrument continues to measure concentration and send data when requested.
This option is of particular use for instruments connected to multidrop or Hessen protocol networks.
5.11.3. SECOND LANGUAGE SWITCH
TAI’s instruments can be equipped with a switch that activates an alternate set of display message in a language
other than the instrument’s default language. To activate this feature, the instrument must have a specially
programmed Disk-on-Module (DOM) containing the second language. Call Customer Service for this DOM.