Teledyne 200AH 用户手册

 

This is the most common mode of operation. It provides continuous output of NO, NO

X

 and NO

2

 

gas concentrations. To select switching mode press SETUP-MORE-VARS-ENTR and press 
NEXT to scroll to the MEASURE-MODE variable. Set the value of this variable to NO NO

X

, 

then press ENTR. Press EXIT to return to SAMPLE mode. 

In this mode only NO

X

 is measured. The converter is in the sample stream continuously. The 

output of the detector is sampled continuously. Since only NO

X

 is being measured, there are 2 

advantages to this mode. First, it is possible to optimize for shortest response time. Second, NO

X

 

is being continuously measured so that short transient events can be captured. 

 

The NO

X

 reading is composed of a NO component and a NO

2

 component. The NO

2

 component 

is the only one impacted by the converter efficiency, and since the instrument is always in NO

X

 

mode it is not possible to know the fraction of the NO

X

 reading that is NO

2

. 

To select NO

X

 only mode press SETUP-MORE-VARS and press NEXT to scroll to the 

MON_MODE variable. Set the value to NO

X

, then press ENTR. Press EXIT to return to 

SAMPLE mode. 

In this mode only NO is measured. The converter is always out of the sample stream. The output 
of the detector is sampled continuously. Since only NO is being measured, there are 2 
advantages to this mode. First, it is possible to optimize for shortest response time. Second, NO 
is being continuously measured so that short transient events can be captured. 

To select switching mode press SETUP-MORE-VARS and press NEXT to scroll to the 
MON_MODE variable. Set the value of this variable to NO, then press ENTR. Press EXIT to 
return to SAMPLE mode.