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METTLER TOLEDO Weigh Module Systems Handbook

(12/99)10-4

Installation

The actual installation procedure will depend on the specific requirements of an

application. One of the first things to consider is the foundation on which the tank scale

will be placed. This is usually a concrete floor or steel support structure. Whichever you

are using, you will need to make sure that it is strong enough to remain rigid under the

weight of the full tank scale. The base plate bearing data in Table 10-1 lists the pressure

that each weigh module will exert on its foundation.

VLM2 Value Line Weigh

Module lb

Base Plate Bearing

psi (K pascal)

Top Plate Bolts (Metric) Base Plate Bolts (Metric)

250 11 (76) 1/4”-20 UNC (M6 x 1) 3/8”-16 UNC (M10 x 1.5)

500 21 (145) 1/2”-13 UNC (M12 x 1.75) 3/8”-16 UNC (M10 x 1.5)

1,000 42 (290) 3/8”-16 UNC (M10 x 1.5) 3/8”-16 UNC (M10 x 1.5)

2,000 84 (579) 1/2”-13 UNC (M12 x 1.75) 3/8”-16 UNC (M10 x 1.5)

2,500 104 (717) 1/2”-13 UNC (M12 x 1.75) 3/8”-16 UNC (M10 x 1.5)

Bolts should be GR.5 / ASTM A325 minimum

Table 10-1: Value Line Bearing Support and Mounting Bolt Sizes

General Procedure

Position a weigh module under each of the tank’s support legs or mounting lugs,

and slowly lower the tank onto the weigh modules.

Make sure that each load point on the tank is well supported by a weigh module’s

mounting pad and that all mounting pads are level within +1/16 inch. Otherwise,

add shims until each load point is supported and the mounting pads are level.

Bolt the mounting pad of each weigh module to the support leg or mounting lug

that is resting on it.

Lower the tank onto the support foundation (concrete slab or support beam). Mark

the position of the base plate mounting holes on the foundation (see Figure 10-3).

METTLER TOLEDO can supply templates for the bolt holes.

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