Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 206)

Calibration Procedures Teledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 206
I MPORTANT I MPACT ON R EADINGS OR D ATA
For this Initial Calibration it is important to independently verify the
PRECISE CO Concentration Value of the SPAN gas.
If the source of the Span Gas is from a Calibrated Bottle, use the exact
concentration value printed on the bottle.
9.3.3.2. ZERO/SPAN POINT CALIBRATION PROCEDURE
The zero and cal operations are initiated directly and independently with dedicated
buttons (CALZ & CALS).