Land 4500 MKII Premier, Руководство по эксплуатации и обслуживанию

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Model 4500 Premier Dust and Opacity Monitor
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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 Transceiver should be planned during the design stages.
For existing plants, it is critical that the best possible location be selected. The Transceiver
should be mounted so that it can detect 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, Specification 1, or a
location approved by the appropriate agency.
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 Measurement errors may result if the Transceiver is subjected to strong vibrations or if the
stack or duct changes shape as the gas temperature changes. If this cannot be avoided, a
vibration free mounting can be installed. Contact Land for information.
6 The ambient temperature at the mounting location must remain between -20°C and +55°C
(-4°F and 131°F). If necessary, heating, ventilation, or isolation should be used to ensure this
temperature range is not exceeded.
7 If the duct walls are too thin to support the weight of the instrument, additional reinforcement
will be required.
8 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 or perpendicular to the direction of
gas flow.
mounting flange
for instrument
access platform
stack