Ametek Land 4500 MKIII, Руководство пользователя

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A - 5
Model 4500 MkIII Opacity and Dust Monitor
User Guide
A3.2 Selecting an Installation Location
The location of the mounting flanges may be affected by the type
of Air Blower Unit(s) to be used. Please refer to the Air Blower Unit
manual.
1) For new plants, the location of the Transmissometer should be planned
during the design stages. For existing plants, it is critical that the best
possible location be selected. The Transmissometer should be mounted
so that it measures a representative concentration of dust across the
stack or duct diameter.
2) If the monitor is to be used for US regulatory compliance the location
should be determined by the EPA installation specifications detailed
in 40 CFR 60, Appendix B, Performance Specification 1, or a location
approved by the appropriate agency. In Europe the location should the
determined in accordance with EN15259.
3) At the installation location, there should be as much negative pressure
as possible, for example, a stack updraft.
4) The mounting area must have a safe walkway: if necessary, a
sufficiently large and accessible platform should be constructed.
5) The ambient temperature at the mounting location must remain
between -40°C and +55°C (-4°F and 131°F). If necessary, heating,
ventilation, or a sun shield should be used to ensure this temperature
range is not exceeded.
6) If the duct walls are too thin to support the weight of the instrument,
additional reinforcement will be required.
7) The mounting flanges must be positioned such that the Transceiver and
Retro-Reflector face each other across the centre of the stack or duct.
Since most applications involve a vertical stack, the axis common to
both flanges must be level and perpendicular to the direction of gas
flow.
Mounting flange for
adjustment
Access platform
Stack