External Obstructions; Preferred Orientation; Continuous Level - Vega SHLG Operating Instructions Manual

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
the specific application, the preferred orientation for the SHLG

Continuous Level

Mount the SHLG
fasteners to temporarily attach the source carrier cover to the source holder.
SHLG Continuous Level Orientation
Figure 4.1
39089-US-210509
®
on a process vessel or a process pipe. Depending upon
®
perpendicular to the process pipe or vessel. Use the same
Mounting
®
is as follows:
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