Teledyne 201A Manual Do Utilizador

 Analyzer Instruction Manual, 04689, Rev. B1 

 

Do NOT use copper tubing or fittings designed for household plumbing. 
Use ONLY Chromatography grade (cleaned, passivated) stainless steel tubing  
Use ONLY Glass tubing for sample inlet manifold. 
 

These rules apply also to your calibrator’s internal plumbing.  Verify that the calibrator 
pneumatic pathway that contacts ammonia only uses stainless steel or glass tubing.     

The M702SS calibrator supplied with the External Calibration Option is built with 
stainless steel fittings and tubing for all internal plumbing wetted by NH3.   

Typical ambient NH3 levels are < 15 ppb, unless there is some large source of 
ammonia nearby, so the sampling and analysis system must be carefully designed and 
well maintained. 

The M201A does not come with a sample filter installed.  Depending on the options 
ordered, a sample filter may be separately packaged with the instrument.  If the filter is 
installed, the instrument response time is significantly increased, due to its large surface 
area.   Also, the condition of the filter (particulate loading and type) can adversely affect 
the response time.    

For minimum response time operation, the instrument should be supplied with clean 
sample gas at ambient pressure.   

If the sample filter is not included, the only additional filter in the M201A pneumatic 
pathway is a ¼” dia stainless steel sintered filter used to protect the flow control orifice 
from plugging.  This filter will plug rapidly if the sample gas is not filtered before entering 
the analyzer.  Some means of filtering the sample gas, such as an external stainless 
steel filter should be added upstream of the analyzer.