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Calibration Procedures Teledyne API - Model 200EH/EM Operation Manual
160
7.2. MANUAL CALIBRATION
The following section describes the basic method for manually calibrating the Model 200EH/EM NO
X
analyzer.
If both available iDAS parameters for a specific gas type are being reported via the instruments analog outputs
e.g. NXCNC1 and NXCNC2, separate calibrations should be carried out for each parameter.
Use the LOW button when calibrating for NXCNC1
Use the HIGH button when calibrating for NXCNC2.
See Section 6.13.3 & 6.13.4 for more information on analog output reporting ranges
STEP ONE: Connect the sources of zero air and span gas as shown below.
VENT here if input
is pressurized
Source of
SAMPLE Gas
PUMP
MODEL
200EH/EM
Sample
Exhaust
Span Point
Zero Air
Calibrated NO
at HIGH Span
Concentration
Filter
External Zero
Air Scrubbe
r
VENT
MODEL 700
Gas Dilution
Calibrator
MODEL 701
Zero Gas
Generator
Figure 7-2: Pneumatic Connections–With Zero/Span Valve Option (50)
VENT here if input
is pressurized
Source of
SAMPLE Gas
PUMP
VENT
MODEL
200EH/EM
Sample
Exhaust
High Span Point
Low Span Point
Zero Air
Calibrated NO
at HIGH Span
Concentration
Calibrated NO
at LOW Span
Concentration
Filter
External Zero
Air Scrubbe
r
VENT
On/Off
Valves
Figure 7-3: Pneumatic Connections–With 2-Span point Option (52) –Using Bottled Span Gas
04521C (DCN5731)