Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 55)

Getting Started Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 35
Table 3-11: Two-Point Span Valve Operating States
MODE VALVE CONDITION
SAMPLE
Sample/Cal Open to SAMPLE inlet
Zero Gas Valve Closed to ZERO AIR inlet
High Span Valve Closed to HIGH SPAN inlet
Low Span Valve Closed to LOW SPAN inlet
ZERO
CAL
Sample/Cal Closed to SAMPLE inlet
Zero Gas Valve Open to ZERO AIR inlet
High Span Valve Closed to HIGH SPAN inlet
Low Span Valve Closed to LOW SPAN inlet
HIGH
SPAN
CAL
Sample/Cal Closed to SAMPLE inlet
Zero Gas Valve Closed to ZERO AIR inlet
High Span Valve Open to HIGH SPAN inlet
Low Span Valve Closed to LOW SPAN inlet
Low Span
Check
Sample/Cal Closed to SAMPLE inlet
Zero Gas Valve Closed to ZERO AIR inlet
High Span Valve Closed to HIGH SPAN inlet
Low Span Valve Open to LOW SPAN inlet