Teledyne 200AH 用户手册

 

3.  SELECT RANGE  

The range selection is the same with dilution as with normal monitoring. See Section 5.3.4 for 
information on range selection. You should note however, the value entered should be the actual 
concentration of the calibration gas entering the dilution probe. The units of this number is ppm. 

4.  CALIBRATION 

When the above selections have been made, the instrument now must be calibrated through the 
dilution probe. 

 

The M200AH can display NO

X

 concentrations in ppm or mg/m

3

 and if equipped with the 

Oxygen Sensor option, displays O

2

 concentrations in %. To change the current NO

X

 units press 

SETUP-RANGE-UNIT. Select PPM or MGM, then press ENTR. Remember, you should now 
reset the expected span concentration values in the new units and re-calibrate the instrument 
using one of the methods in Section 7. The following equations give approximate conversion 
values. The exact values depend on the standard temperature and pressure used by your 
regulatory agency.  

NO ppm x 1.34 = NO mg/m

3 

NO

2

 ppm x 2.05 = NO

2

 mg/m

3