Technical Manual Page 12 CODEL
OPS.080 Issue : C Rev. : Date : 16/7/08 Doc. i/d : 0080/6 Ref. : 080040
Conditions vary from plant to plant but, in general, the following guidelines should be followed:
• Firstly, look for a suitable location on ductwork between the ID fan and the stack.
• Large power plant with multiple flues having concrete wind-shields can provide good alternative
mounting locations within the stack. Access stairs, lifts and working platforms at various levels
usually exist.
• On smaller plant, mounting on metal stacks is acceptable, provided suitable access platforms exist.
• Only locate analysers on single flue concrete stacks if no other position is possible.
• Do not locate analysers any higher than necessary on stacks. There is no benefit to measurement
quality and significant disadvantages for service personnel.
4.2. Analyser Positioning
The preferred analyser position is shown below in Figure 6.
Figure 6 : Preferred Transceiver Position
The transceiver should be angled at 5
0
downward to encourage condensation to flow into the measurement tube
and then dissipate.
Figure 7 : Angled Probe Installation
5
o
downward slope
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