Dilution Ratio - Teledyne 200E Instruction Manual

Model 200E Instruction Manual
Select the preferred
concentration unit.
Conversion factors from volumetric to mass units used in the M200E:
NO
Concentrations displayed in mg/m
temperature and pressure (STP). Consult your local regulations for the STP used by your
agency. EPA protocol applications, for example, use 25° C as the reference temperature.
Changing the units may cause a bias in the measurements if standard temperature and
pressure other than 0°C and 760 Torr are used. This problem can be avoided by recalibrat-
ing the analyzer after any change from a volumetric to a mass unit or vice versa.
In order to avoid a reference temperature bias, the analyzer must be recalibrated

6.5.7. Dilution Ratio

The dilution ratio is a software option that allows the user to compensate for any dilution of
the sample gas before it enters the sample inlet. Using the dilution ratio option is a 4-step
process:
• Select concentration units: Follow the procedure in Section 6.5.6.
• Select the range: Use the procedures in Section 6.6. Make sure that the SPAN value
entered is the maximum expected concentration of the undiluted calibration gas and
that the span gas is either supplied through the same dilution inlet system as the
sample gas or has an appropriately lower actual concentration. For example, with a
044100102 Rev A
SAMPLE
< TST TST > CAL
SETUP X.X
CFG DAS RNGE
SETUP X.X
MODE SET UNIT
SETUP X.X
PPM PPB UGM
SETUP X.X
PPM PPB UGM MGM
NO: ppb x 1.34 = µg/m
: ppb x 2.05 = µg/m
2
3
and µg/m
after every change in reporting units.
RANGE = 500.0 PPB NOX=X.X
SETUP
PRIMARY SETUP MENU
PASS CLK MORE EXIT
RANGE CONTROL MENU
EXIT
CONC UNITS: PPM
MGM ENTER EXIT
CONC UNITS: UGM
ENTER EXIT
3
; ppm x 1.34 = mg/m
3
; ppm x 2.05 = mg/m
3
use 0° C and 760 Torr as standard
CAUTION
Operating Instructions
EXIT returns
to the main menu.
ENTR accepts
the new unit,
EXIT returns
to the SETUP
menu.
3
3
53