Range Units - Teledyne GFC7001T Operation Manual

SetupTeledyne API – Model T300/T300M CO Analyzer

5.4.4. RANGE UNITS

I
MPORTANT
I
MPORTANT
The GFC7001T/GFC7001TM can display concentrations in parts per million (10
per mol, PPM) or milligrams per cubic meter (mg/m
of the display, COMM port and DAS values for all reporting ranges regardless of the
analyzer's range mode. To change the concentration units:
In order to avoid a reference temperature bias, the analyzer must be
recalibrated after every change in reporting units.
Concentrations displayed in mg/m
Standard Temperature and Pressure (STP). Consult your local regulations
for the STP used by your agency.
(Example: US EPA uses 25
Once the Units of Measurement have been changed from volumetric (ppb or
ppm) to mass units (µg/m
the "expected span values" previously in effect will no longer be valid.
Simply entering new expected span values without running the entire
calibration routine IS NOT sufficient.
This will also counteract any discrepancies between STP definitions.
Teledyne Analytical Instruments
I R
MPACT ON EADINGS OR
I R
MPACT ON EADINGS OR
3
and ug/m
o
C as the reference temperature).
3 3
or mg/m ) the analyzer MUST be recalibrated, as
3
, MG). Changing units affects all
D
ATA
D
ATA
3
use 0 ° C and 760 mmHg for
6
mols
101