power was disconnected from the instrument. 
 
3.4.4  Status Menu 
Main Menu  Analyser State Menu  Status Menu 
The Status Menu presents a list of the current Pass/Fail statuses of the main components.  
During warm-up, the status of some parameters will be a dashed line. 
This field enters a screen with a log of all the events that the instrument 
has performed. These events include errors and warnings. This log is 
stored on the USB memory stick. 
The log is organised by month. When you enter this screen you will be 
prompted to enter the month for which you wish to view events. 
This field allows the user to display the list of current errors and 
warnings on the screen. 
This field is visible with the next service due date if the service is due 
within the next two weeks. 
Pass if the +5V power supply is within the acceptable range. 
Pass if the +12V power supply is within the acceptable range. 
Pass if the analog power supply is within the acceptable range (+12V). 
Pass if the analog power supply is within the acceptable range (-12V). 
Fail only if a problem is detected with the analog to digital conversion. 
Pass if the cell heater temperature is within ±10% of the heater set 
point (refer to Section 3.4.5). 
The converter temperature should be 325°C. It must be between 250°C 
and 350°C to pass. 
Status of the PMT cooler. It must be 13°C ±10% to pass. 
Fail if the high voltage value is <20 or >30 from the target. 
Target is 650V (Standard), 700 (Trace) and 550(High).  
Pass if the system has an adequate electrical supply. 
Error if the system is “In Maintenance” (refer to Section 3.4.12). 
Error if the electronics are in Diagnostic Mode (refer to Section 3.4.14). 
Error if the Pres/Temp/Flow Comp. is disabled (refer to Section 3.4.13). 
Error if the control loop is disabled (refer to Section 3.4.13). 
Error if the valve sequencing is disabled (refer to Section 3.4.15). 
Indicates if the Ozonator is on or off. 
Indicates if the voltage of the concentration during measurement is 
within the limits of the analog to digital converter (-0.26 to 3.29V). 
Indicates if the voltage of the concentration during measurement is 
within the limits of the analog to digital converter (-0.26 to 3.29V). 
Indicates if the voltage of the concentration during measurement is 
within the limits of the analog to digital converter (-0.26 to 3.29V).