Vega SHLG, Руководство по эксплуатации

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Mounting
External Obstructions
Any material in the path of the radiation can affect the measurement. Some
materials that are present during the initial adjustment pose no problem because
the adjustment accounts for the effect of those materials. Examples of such
materials are:
• Tank walls
• Liners
• Insulation
However, when the materials change or you introduce new ones, an erroneous
gauge reading is possible. For example, insulation that you add after adjustment
attenuates the radiation and causes the gauge to erroneously read upscale.
Preferred Orientation
You can mount the SHLG
®
on a process vessel or a process pipe. Depending upon
the specific application, the preferred orientation for the SHLG
®
is as follows:
Continuous Level
Mount the SHLG
®
perpendicular to the process pipe or vessel. Use the same
fasteners to temporarily attach the source carrier cover to the source holder.
Figure 4.1
SHLG Continuous Level Orientation