COMMISSIONING AND DECOMMISSIONING 
Information for general use 
Rev. M / 73023639 
 
6.2.  Standard commissioning and normal operation 
 
Check the state of the system and the connections.  
Open the operational calibration gas cylinder  
(setting 0.2 MPag ≙ 2 barg≙ 29.01psig) 
Open the process gas (PG)  
(setting from 0.15 MPag ≙ 1.5 barg ≙ 21.76psig to 
0.3 MPag ≙ 3 barg ≙ 43.51psig = max. inlet pressure) 
Switch on the power supply.  
 
The  start  procedure  is  now  executed  automatically.  It  starts  by  powering  up  the  computer  and 
heating the sensor block.  
The current temperature of the sensor block (TSB) is also shown on the display during this time. The 
heating time of a cold device can take up to one hour in a cold environment. All dependent values 
are displayed in RED as an error before the working conditions are reached. 
When the temperature of the sensor block reaches the operating range (70°C ≙ 158°F ≙ 343K), a start 
delay, which is also displayed, will commence. Outputs and inputs of the device are not yet active 
during this time. 
After the start delay has expired, the instrument is flushed with measuring gas and the inputs and 
outputs  are  activated.  The  device  then  automatically  switches  to  standard  mode,  known  as 
“Analysis”. This is displayed on the screen of the instrument. The Q2 now operates with the adapted 
factory setting, which also determines the starting behaviour described above. 
 
Action: Continuation commissioning  
If necessary, open the bypass and check the gas flow. If necessary, set it to the valid 
range. see next section.  
Check and change the device settings and signals if necessary, see next section 
 
GasLab  Q2  works  continuously  after  all  steps  have  been  carried  out  and  the  standard 
commissioning is finished. 
 
The right LED flashes in RED when errors occur.  
If there are currently no errors, the LED lights up permanently.  
The color depends on the event history.  
For more information, see section 7.1 LEDs above the interactive screen