Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 189)

Calibration Procedures Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 169
5.2.5.1. Determining / Updating the NO
2
Converter Efficiency
The following procedure will cause the Model 9110TH/M to automatically calculate the
current NO
2
conversion efficiency.
STEP ONE:
Connect a source of calibrated NO
2
span gas as shown below.
Source of
SAMPLE GAS
Removed during
calibration
Instrument
Chassis
SAMPLE
EXHAUST
PUMP
MODEL T700
Gas Dilution
Calibrator
VENT if not vented
at calibrator
MODEL 701
Zero Gas
Generator
NO
2
Gas
(High Concentration)
VENT here if input
is pressurized
Figure 5-1: Gas Supply Setup for Determination of NO
2
Conversion Efficiency