Teledyne ULTRAFLOW 150, Operation Manual, Page: 15 / 162

SECTION 3.0, OPTIONAL EQUIPMENT
BANK or category of display information, while the second GREEN
numeric character identifies the individual memory location within the
BANK.
Consult the Site Specification Data sheet of Appendix A for information on
the configuration of your individual monitor.
3.3 DUAL ANALOG INPUT BOARD
The Dual Analog Input Board option is required when the user wishes to
have the Ultraflow 150 take in external information on stack pressure and
temperature in order to convert the stack flow volume values to standard
conditions.
3.3.1 Barometric Pressure Sensor Assembly
A Barometric Pressure Sensor Assembly is available for the purpose of
correcting flow volume data to standard pressure. The assembly contains
an on-board absolute pressure transducer that reads the ambient pressure
outside the Transducer Interface Enclosure via a sealed vent line. This
approach is recommended only for applications in which the static gage
pressure of the process is not likely to undergo dramatic changes. For
cases where static pressure varies widely, a pressure transducer measuring
the actual process pressure will deliver maximum accuracy. See the
System Properties Menu section (Section 6.0) of this manual for external
pressure transducers.
The Barometric Pressure Sensor Assembly is inserted into a connector on
the Dual Analog Input Board, a separate option located in the Transducer
Interface Enclosure. The Dual Analog Input Board provides the required
operating power for the assembly and converts the pressure transducer
voltage to 12 bit digital data for use by the Flow Mother Board.
Consult the Enhanced Remote section (Section 6.0) of this manual for
information on calibration of the Barometric Pressure Sensor Assembly.
See Table 3-1 below for the Dual Analog Input Board jumper settings for
use of the Barometric Pressure Sensor Assembly.
3-2