Справочник Пользователя для Teledyne gfc 7000ta

 

Teledyne Analytical Instruments 

28 

7.  Attach a sample inlet line to the sample inlet port.  The SAMPLE input line should not be more 

than 2 meters long. 

  At least 0.2m long 
  No more than 2m long and vented outside the shelter or immediate area 

 

 

8.  Attach sources of zero air and span gas (see Figures 3-3 through 3-8 inclusive). 

  Span Gas is a gas specifically mixed to match the chemical composition of the type of gas 

being measured at near full scale of the desired measurement range.   

In the case of CO

2

 measurements made with the Teledyne Instruments Model GFC 7000TA 

Analyzer it is recommended that you use a gas calibrated to have a CO

2

 content equaling 

80% of the range of compositions being measured. 

EXAMPLE:  If the application is to measure between 0 ppm and 500 ppm, an appropriate Span 
Gas would be 400 ppm.  If the application is to measure between 0 ppm and 100 ppm, an 
appropriate Span Gas would be 80 ppm.   

  Span Gas can be purchased in pressurized canisters or created using Dynamic Dilution 

Calibrator such as the Teledyne Instruments Model T700 and a source of dried air scrubbed 
of CO

2

 such as a bottle of N

2

. 

  Zero Air is similar in chemical composition to the Earth’s atmosphere but scrubbed of all 

components that might affect the analyzer’s readings.   

In the case of CO

2

 measurements this means less than 0.1 ppm of CO

2

 and Water Vapor 

(when dew point <-15˚C).  Zero Air can be purchased in pressurized canisters. 

9.  Attach an exhaust line to the exhaust outlet port.   

  The exhaust from the pump and vent lines should be vented to atmospheric pressure using 

maximum of 10 meters of ¼” PTEF tubing.