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Model 300E Carbon Monoxide Analyzer
Instruction Manual
CALIBRATION PROCEDURES
P/N 04288 REV: A
125
/SPAN CALIBRATION VS. ZERO/SPAN CHECK
Sections 7.2 and 7.3 describe procedures for performing manual Zero and Span Calibrations on
your analyzer.
To perform a CHECK of the instrument’s Zero or Span Calibration follow the same steps,
however,
DO NOT
press the
ENTR
key at the end of each operation.
Pressing the
ENTR
key resets the stored values for
OFFSET
and
SLOPE
and alters the
instruments Calibration.
When performing a CHECK
ZERO
, press the
EXIT
key to end the procedure.
7.2. Manual Calibration without Zero/Span
Valves
This is the basic method for manually calibrating the Model 300E CO Analyzer
without functioning Zero/Span Valve options. It is identical to the method
described in the GETTING STARTED section of this manual and is repeated her for
you convenience.
STEP ONE:
Connect the Sources of Zero Air and Span Gas as shown below.
No Valve Options Installed
MODEL
300E
Sample
Exhaust
Pressure Span
Vent Span
IZS
MODEL 700
Gas Dilution
Calibrator
MODEL 701
Zero Air Generator
VENT
Calibrated
CO Gas
Source of
SAMPLE Gas
Removed
during
Calibration
MODEL
300E
Sample
Exhaust
Pressure Span
Vent Span
IZS
MODEL 701
Zero Air Generator
VENT
Calibrated
CO Gas
Source of
SAMPLE Gas
Removed
during
Calibration
Valve
OR
Needle Valve to
control Flow
Figure 7-1: Pneumatic Connections for Manual Calibration w/o Z/S Valves