1 trace oxygen detector technology, Instruction manual – Emerson ROSEMOUNT NGA2000 TO2 User Manual
Page 14

Instruction Manual
748374-F
March 2003
1-2 Description and Specifications
Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 TO2
Figure 1-1. Trace Oxygen Detector Technology
ELECTRONICS
SECONDARY ANODE (+)
BI-STRATA™ DIFFUSION
BARRIER
SAMPLE IN
SAMPLE OUT
O
2
SENSING CATHODE (-)
SECONDARY CATHODE (-)
O
2
SENSING ANODE (-)
O
2
O
2
e
-
e
-
KOH
OH
-
S
S