Filter
Top Products
Operating Instructions Teledyne API - Model 200EH/EM Operation Manual
80
6.8. SETUP RNGE: RANGE UNITS AND DILUTION
CONFIGURATION
This Menu is used to set the units of measure to be associated with the analyzer’s reporting ranges (see Section
6.13.3.2. for more information on reporting ranges vs. physical ranges) and for instruments with the sample gas
dilution option operating, to set the dilution ratio.
6.8.1. RANGE UNITS
The M200EH/EM can display concentrations in parts per million (10
6
mols per mol, PPM) or milligrams per cubic
meter (mg/m
3
, MG). Changing units affects all of the display, COM port and iDAS values for all reporting ranges
regardless of the analyzer’s range mode. To change the concentration units:
SAMPLE A1:NXCNC1= 100.0 PPM NOX=XXX.X
< TST TST > CAL SETUP
SETUP X.X
PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP X. RANGE CONTROL MENU
UNIT DIL EXIT
SETUP X.X CONC UNITS: PPM
PPM MGM ENTER EXIT
Select the preferred
concentration unit.
SETUP X.X CONC UNITS: MGM
PPM MGM ENTER EXIT
EXIT returns
to the main
menu.
ENTR accepts
the new unit,
EXIT returns
to the SETUP
menu.
Conversion factors from volumetric to mass units used in the M200EH/EM:
NO: ppm x 1.34 = mg/m
3
NO
2
: ppm x 2.05 = mg/m
3
Concentrations displayed in mg/m
3
and µg/m
3
use 0° C and 760 Torr as standard 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 0C and 760 Torr are used. This problem can be avoided by recalibrating
the analyzer after any change from a volumetric to a mass unit or vice versa.
CAUTION
In order to avoid a reference temperature bias, the analyzer must be recalibrated after
every change in reporting units.
04521C (DCN5731)