Teledyne 501 TRS, Operation Manual, Page: 62 / 111

THEORY OF OPERATION Teledyne API - T102/501 TRS, Addendum to T101 Operation Manual
60
10.4.
Electronic Operation
10.4.1.
Sensor Module
This Section replaces the Sensor Module and Sample Chamber section in the T101
Manual - PN 07266.
Electronically, the T102 sensor module is a group of components that: create the UV
light that initiates the fluorescence reaction between SO
2
and O
3
; sense the intensity of
that fluorescence and generate various electronic signals needed by the analyzer to
determine the SO
2
concentration of the sample gas (see Section 9.1) and sense and
control key environmental conditions such as the temperature of the sample gas and the
PMT.
Figure 10-2. T102 Sensor Module
These components are divided into two significant subassemblies. The sample chamber
and the PMT assembly.
• Figure 9-3 shows an exploded view of the sample chamber assembly
• Figure 9-5 shows an exploded view of the PMT Assembly
07267B DCN6485