Rice Lake RL1800 Series, Руководство по установке

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Mechanical Installation
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• If tanks and surrounding equipment are frequently steam cleaned, or if the load
cell is subjected to direct washdown, a protective shroud for the weigh module is
recommended.
• Proper drainage is necessary so the weigh module is not standing in water.
When installing the load cells, use the bolts provided or grade 5 (or stronger) hardened
bolts. Pay particular attention to the recommended torque values.
• Some modules require very loosely torqued bolts to allow the load cells to flex
easily.
• Some modules must be very tight to prevent the load cells from creeping or
digging into the module.
Figure 2-4. Parts of the RL1800 Module
2.2 Installing the RL1800 Module
The type of installation, structure of the vessel supports, and strength of the mounting
surface govern the method of locating, attaching, and assembling the RL1800 Weigh
Module. Carefully consider three areas which commonly cause accuracy problems:
• Are the supporting legs adequately braced so they will not spread when the
system is fully loaded?
• Does the supporting structure have the necessary strength to prevent flexing
when the system is fully loaded?
• Is there attached equipment such as skirting, venting, or piping which is likely to
cause binding or lack of flexibility?
To install the load cells, use the following directions:
1. Determine where to position the module and which direction it should be oriented.
2. Assemble the module and load cell (
Figure 2-4 ).
• Torque 1/2'' mounting bolts to 65 ft-lb
• Torque 3/4'' mounting bolts to 175 ft-lb
3. Adjust center loading bolt on all modules to give the lowest overall profile height,
leaving at least 1/8'' gap between the load cell and the upper support loading block.
Top Plate
Load Cell Bolt and Lock
Washer
Load Cell
Load Cell
Mounting Block
Base Plate
Loading Bolt
Flat Washer
Upper Support
Loading Block
Convex
Washer
Concave
Washer
Shoulder
Bolt
Jam Nut