Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 87)

OverviewTeledyne API – Model T300/T300M CO AnalyzerTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 87
Figure 4-2: Viewing GFC7001T/GFC7001TM Test Functions
I
MPORTANT I MPACT ON R EADING OR D ATA
A value of “XXXX” displayed for any of the TEST functions indicates an
out-of-range reading or the analyzer’s inability to calculate it. All
pressure measurements are represented in terms of absolute pressure.
Absolute, atmospheric pressure is 29.92 in-Hg-A at sea level. It
decreases about 1 in-Hg per 300 m gain in altitude. A variety of factors
such as air conditioning and passing storms can cause changes in the
absolute atmospheric pressure.
Table 4-2: Test Functions Defined
PARAMETER DISPLAY TITLE UNITS MEANING
Stability STABIL
PPB 3 , PPM
UGM 3 , MGM
Standard deviation of CO concentration readings. Data points are
recorded every ten seconds using the last 25 data points. This
function can be reset to show O
2
or CO
2
stability in instruments with
those sensor options installed.
Range
RANGE
RANGE1 1
RANGE2 1
PPB, PPM,
UGM, MGM
The full scale limit at which the reporting range of the analyzer is
currently set. THIS IS NOT the Physical Range of the instrument.
See Section 5.4.1 for more information.