Teledyne 6400EH - Sulfur Dioxide Analyzer - Manual (Page 53)

UV Fluorescence SO2 Analyzer Theory of Operation
Teledyne Analytical Instruments 41
9.3 Electronic Operation
There following figures replace Figures 10-10 & 10-19 of the
6400E Manual. There is no IZS option, a vacuum pressure sensor
replaces the 6400E’s thermal-mass flow sensor and provision is made
for the two span point valve option
Figure 9-3: 6400EH Electronic Block Diagram