Table 3-12: Nist-Srm's Available For Traceability Of Co Calibration Gases - Teledyne T300 Operation Manual

Teledyne API – Model T300/T300M CO Analyzer
06864B DCN6314
If the analyzer is NOT equipped with the optional CO
scrubbed of CO as well, as this gas can also have an interfering effect on CO
2
measurements.
For analyzers without an IZS or external zero air scrubber option, a zero air generator
such as the Teledyne API Model T701 can be used.
S G
PAN AS
Span gas is a gas specifically mixed to match the chemical composition of the type of
gas being measured at near full scale of the desired measurement range. In the case of
CO measurements made with the T300 or T300M Analyzer, it is recommended that you
use a span gas with a CO concentration equal to 80-90% of the measurement range for
your application.
EXAMPLE: If the application is to measure between 0 ppm and 500 ppb, an appropriate
span gas concentration would be 400-450 ppb CO in N2.
Cylinders of calibrated CO gas traceable to NIST-Standard Reference Material
specifications (also referred to as SRMs or EPA protocol calibration gases) are
commercially available. Table 3-12 lists specific NIST-SRM reference numbers for
various concentrations of CO.
Table 3-12: NIST-SRM's Available for Traceability of CO Calibration Gases
NIST-SRM
1680b
1681b
2613a
2614a
1
2659a
2626a
2745*
1
Used to calibrate optional O
2
Used to calibrate optional CO
S G M
PAN AS FOR ULTIPOINT
Some applications, such as EPA monitoring, require a multipoint calibration procedure
where span gases of different concentrations are needed. We recommend using a bottle
of calibrated CO gas of higher concentration in conjunction with a gas dilution calibrator
such as a Teledyne API's T700.
concentration gas with zero air (both supplied externally) to accurately produce span gas
of the correct concentration. Linearity profiles can be automated with this model and
run unattended over night.
TYPE
CO in N
2
CO in N
2
CO in Zero Air
CO in Zero Air
O in N
2 2
CO in N
2 2
CO in N
2 2
sensor.
2
sensor.
2
C
ALIBRATION
This type of calibrator precisely mixes a high
Getting Started
sensor, zero air should be
2
NOMINAL CONCENTRATION
500 ppm
1000 ppm
20 ppm
45 ppm
21% by weight
4% by weight
16% by weight
75