Tekran Flow Checks

 

Purpose:  This procedure is in place to show how a usual flow check is done on the Tekran when an 1130 Pump Module, 1130 Denuder Module and an 1135 Particulate Module are connected to the 2537.

 

Required Equipment:  BIOS with DC-2 Base

                  

Reference:  SOPMAN Pages XX-XX

 

Before starting the flow checks take notice of the sampling sequence.  The Tekran must be running in Hg(0) mode to perform flow checks..  If the Tekran is in any other mode then wait for it to finish the cycle before initiating flow checks.

 

 

Inlet Flow Checks

 

  1. The inlet flow check should be completed before changing the denuder or soda lime trap.
  2. Remove the heated boot on the bottom of the 1130 denuder module.
  3. Disconnect the sample inlet at the bottom of the zero air connector.
  4. Connect the flow adapter to the bottom of the zero air connector and connect the BIOS to the adapter.  Note:  When connecting the adapter to the BIOS be sure to connect the tubing to the right side of the BIOS.  Also be sure to use the High Flow Cell on the DC-2 Base.
  5. Take three 10 step V Averages and S Averages.  Average those and then collect the instrument information.
  6. Use the ` a to change the display on the 2537 to RUN.CURRENT.  This menu will display the Sample Flow rate on the 2537.  It is located on the second row on the far left and is labeled “SamFlow” (as shown below).

 

 

  1. On the 1130 Pump Module locate the selector switch for flow rate and turn it to “Current Flow”.  Above the switch is the flow rate display in LPM (Liters Per Minute).
  2. Write the BIOS Volumetric and STP flow rates, 2537 flow rate and 1130 Pump module flow rate in your site log as STEP 1 of the Tekran flow checks.  Also record the date and time of the flow check.
  3. Install the new Quartz Denuder, replace the sample inlet and heated boot as shown in the “Tekran Denuder Changeout” procedure.

 

 

Analyzer Flow Checks

 

  1. Make sure the analyzer is still in Hg(0) mode.
  2. Remove the tubing ahead of the TEE before the soda lime trap and connect the BIOS.  Note:  When connecting the adapter to the BIOS be sure to connect the tubing to the right side of the BIOS.  Also be sure to use the High Flow Cell on the DC-2 Base.

 

 

 

  1. Take three 10 step V Averages and S Averages.  Average those and then collect the instrument information.
  2. Use the ` a to change the display on the 2537 to RUN.CURRENT.  This menu will display the Sample Flow rate on the 2537.
  3. On the 1130 Pump Module locate the selector switch for flow rate and turn it to “Current Flow”.  Above the switch is the flow rate display in LPM (Liters Per Minute).
  4. Write the BIOS Volumetric and STP flow rates, 2537 flow rate and 1130 Pump module flow rate in your site log as STEP 2 of the Tekran flow checks.
  5. Reconnect the tubing in front of the TEE before the Soda Lime trap.
  6. Remove the tubing ahead of the soda lime trap and connect the BIOS.  Note:  When connecting the adapter to the BIOS be sure to connect the tubing to the right side of the BIOS.  Also be sure to use the High Flow Cell on the DC-2 Base.

 

 

 

 

 

  1. Use the ` a to change the display on the 2537 to RUN.CURRENT.  This menu will display the Sample Flow rate on the 2537.
  2. Write the BIOS Volumetric and STP flow rates and 2537 flow rate in your site logs as STEP 3 of the Tekran flow checks.
  3. Changeout the Soda Lime Trap as shown in the “Tekran Soda Lime and Inlet Frit Changeout” procedure.
  4. All of the inlet flow checks are now complete.

 

 

 

 

All of the information written into the site log for STEP 1, STEP 2 and STEP 3 should now be typed into the SM ticket.

 

 

 

 

When all flow checks and maintenance have been completed be sure to put the Tekran back into RUN mode.