CHAPTER 2, INSTALLATION AND OPERATION 
98307600 Rev. C-1  2-27 
GAS FLOW 
Instrument-generated information from the flow controller. 
GAS PRESSURE 
Atmospheric pressure; instrument-generated information. 
 
2.5.10 Valve Test Menu 
VALVE TEST MENU 
 
         INT. VALVE #1      : OPEN 
         INT. VALVE #2      : CLOSED 
         INT. VALVE #3      : CLOSED 
         AUX. VALVE #1      : CLOSED  
 
         EXT. MEASURE       : CLOSED 
         EXT. ZERO GAS      : CLOSED 
         EXT. SPAN GAS      : CLOSED 
  
         VALVE SEQUENCING   : ON 
Figure 2-17. Valve Test Menu 
The  VALVE  TEST  MENU  allows  the  valves  to  be  set  to  either  OPEN  or  CLOSED 
according  to  the  operator's  choice.  To  manually  operate  the  valves,  VALVE 
SEQUENCING needs to be turned off. 
INT. VALVE #1 
Sample stream. 
INT. VALVE #2 
Internal zero stream. 
INT. VALVE #3 
Span stream. 
AUX. VALVE #1 
Not used at this time. 
EXT. MEASURE 
Externally supplied sample stream (used with the EZS valve option). 
EXT. ZERO GAS 
Externally supplied zero air (used with the EZS valve option.) 
EXT. SPAN GAS 
Externally supplied span gas (used with the EZS valve option).