Teledyne 9110T - Nitrogen Oxides Analyzer - Manual (Page 62)

Model 9110T NOx Analyzer Getting Started
Teledyne Analytical Instruments 62
Figure 3-19: Pneumatics, Basic Configuration
3.3.2.3. Connections w/Ambient Zero/Ambient Span (Z/S) Valves (OPT 50A)
This valve package includes:
 Two solenoid valves located inside the analyzer that allow the user to switch either zero, span or
sample gas to the instrument’s sensor.
 Two additional gas inlet ports (ZERO AIR and SPAN1).