Teledyne 9110T - Nitrogen Oxides Analyzer - Manual (Page 66)

Model 9110T NOx Analyzer Getting Started
Teledyne Analytical Instruments 66
3.3.2.4. Connections w/Ambient Zero/Pressurized Span Valves (OpT 50B)
This calibration valve package is appropriate for applications where Span Gas is being supplied from a
pressurized source such as bottled NIST SRM gases. This option includes:
 A critical flow orifice and vent that maintains the Span Gas supply at 1 ATM.
 A SHUTOFF valve to preserve the Span Gas source when it is not in use.
 Two solenoid valves located inside the analyzer that allow the user to switch either zero, span or
sample gas to the instrument’s sensor.
 Three additional gas inlet ports (ZERO AIR, SPAN and VENT).
Figure 3-23: Rear Panel Layout with Ambient Zero/Pressurized Span Valves OPT 50B