PARAMOUNTS ® Weigh Module Kit Installation Guide ATER W P RAN TEE D F GUA R OO (SB4 Only) 16953 Rev A
Copyright © Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America. Specifications subject to change without notice.
Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Lift Off Protection/Jacking Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Mount Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.0 Introduction 1.1 Overview Paramount® kits are used for mounting SB4/SB10/SB5 load cells to vessels, tanks, hoppers, platforms, roller tables, and similar applications. They are especially useful where thermal expansion/contraction of the weighing vessel is likely. Note that in this manual, the term “vessel” is used for convenience only; the term applies equally to any load-receiving device.
1.3 Physical Dimensions Torque Q ft-lb H2 L2 D (8 PLS) W1 W H H3 H1 L4 L1 L3 L Dimensions - Inches Rated Capacity 520 lb (1-2.3 KN) D H H1 *H2 **H2 H3 L L1 L2 L3 L4 W Q W1 (ft-lb) 0.37 3.49 1.00 .50 .75 2.98 7.51 3.00 4.00 3.00 .50 4.00 3.00 65 1125-5200 lb (5-23 KN) 0.437 3.58 1.25 .50 .75 3.06 7.51 3.00 4.00 3.00 .50 4.00 3.00 65 11,250 lb (50 KN) 0.562 4.66 1.50 .62 1.00 4.09 9.19 3.87 5.00 3.87 .56 5.00 3.87 295 22,500 lb (100 KN) 0.688 6.41 2.00 .75 1.25 5.73 11.46 4.75 6.00 4.
1.5 Typical Application The sample installations shown in Figure 4 demonstrate the basic principles involved with module applications. Arrows by each mount indicate the directions that the top plate for that mount can move. When arranged as illustrated, the position of the vessel is fixed at one point by the fixed pin mount. The side stop mount allows for thermal expansion/contraction in the direction of the arrows while checking movement in other directions.
2.0 Basic Rules for Positioning Load Cells • Position load cells to distribute the load between the cells as evenly as possible. If an even load distribution is not possible because of the layout, higher capacity load cells may be necessary. This should not affect weighing accuracy. However, all load cells in a scale must be of the same capacity. • Always use one fixed pin mount and one side stop mount; use free sliding mounts at all other support points.
¥ ¥ ¥ Less Than 45 A ¥ Less Than 45 B Figure 5 Three Load Cells on Round Vessel C Figure 6 Four Load Cells on Round Vessel Figure 7 Four Load Cells on Round Vessel FREE SLIDING FREE SLIDING FREE SLIDING SIDE STOP FREE SLIDING FIXED PIN Figure 8 Six Load Cells on Rectangular Vessel Paramount Installation Guide 5
INCORRECT Moment arm causes bending moment on leg CORRECT CORRECT Figure 9 Load Cell Alignment 6 Paramount Installation Guide
3.0 Support Surface Preparation 3.1 Installation on Concrete Foundations A typical installation on a concrete foundation is shown below where a steel foundation plate has been grouted-in using threaded concrete anchor studs or expanding anchor studs. The Paramount base plate and top plate may then be bolted or welded to a foundation plate* and vessel for a quick and simple installation that eliminates the need for matching bolt holes.
3.2 Installation on Structural Steelwork Figure 11 shows an installation where the mount base plate is welded or bolted directly to a steel beam structure. The mount top plate is welded or bolted directly to the vessel. When large loads are applied, the supporting beams may need strengthening with stiffening plates to avoid excessive deflection. GUSSETS Figure 11 Structural Steelwork Installation 3.3 Stiffness Requirements Load variations and external forces can cause support surface level variations.
4.0 Installation 4.1 General Guidelines The mounts are normally shipped from the factory fully assembled with the load cells fitted and the mounting screws torqued to the correct values. If the load cells are removed from the base plate for any reason, they should be reassembled using the procedure in Section 5.2 and the torque values listed in the following table. Load Cell Capacity 2.
Figure 13 Preferred Orientation of Load Cell If the position of the vessel in relation to surrounding structures is critical, as in scales mounted in pits, the vessel must be placed in the correct position before welding or bolting the top plates and base plates. This installation is described in Section 4.2.8. The top and base mounting plates may be bolted or welded to the vessel and the foundation.
complete, wirebrush all welds and degrease. Paint with primer and top coat to match surrounding steelwork. The stainless steel slide plates on the underside of the top plates must CAUTION NOT be painted. 4.2.2 Aligning Top Plates Do not place the vessel on the top plates while the Paramounts are in CAUTION the “shipping” position (top plates raised up by the jacking nut). The lift off protection screw may be bent if weight is placed on the mount before the vessel is securely attached to the top plates.
4.2.5 Load Cell Wiring The load cell wiring color code is: Wire Color Green Black White Red Yellow J-Box Terminal +Excitation -Excitation +Signal -Signal Screen Route the load cell cables so they will be protected from damage. Provide drip loops in the lines so that liquids spilled on the cables do not run down into either the load cells or the junction box. Connect the load cells to the EL604ET junction box supplied.
5.0 Maintenance 5.1 General Periodically check that the stainless steel slide plates are smooth, un-scratched, and free of paint and grease. If the faces of the plates do become damaged, they may be turned over to get a better surface. Ensure the O-ring, gasket, and V-ring (side stop and free sliding mounts only) are in place on the loading pins. Ensure that the teflon coated slide plate on the top of each sliding pin is in good condition.
cable end of the load cell. Insufficient torque may allow the rear of the load cell to lift; too much torque may cause screw failure. 6. Lower the vessel onto the load cell by raising the jack nut while holding the jam nut with a second wrench. Lock the jack nut against the jam nut. See Section 4.2 for wiring and trimming information.
6.0 Replacement Parts 6.1 Fixed Pin Mount 2 12 11 1 10 9 13 3 4 8 7 6 5 1. Load cell mounting screws 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Seal Washer plate Spacer Lift off protection screw Fixed load pin O-ring Base plate Load cell Jack nut Top plate Jam nut Washer plate screws Ref. # Description 2 7 8 Seal O-Ring Fixed Load Pin 1, 2.
6.2 Side Stop and Free Sliding Mounts 2 1 3 4 13 14 15 5 12 6 17 16 7 11 10 9 1. Load cell mounting screws 2. 3. 4. 5. 6. 7. 8. Slide plate bolts Seal Slide plate (teflon) Jam nut Washer plate Spacer Lift off protection screw Ref. # Description 3 10 9 15 14 4 Seal O-Ring Sliding Load Pin V-Ring Slide Plate (s.s.) Slide Plate (Teflon) 16 1, 2.3KN P/N 18332 15325 18336 15321 18292 18328 Paramount Installation Guide 8 9. 10. 11. 12. 13. 14. 15. 16.
6.3 SB10/SB5/SB4 Load Cells Load Cell Capacity Load Cell Description 2.
7.0 Limited Warranty Rice Lake Weighing Systems (RLWS) warrants that all RLWS brand load cells properly installed by a Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications. All load cell products are warranted against defects in materials and workmanship for two (2) years. Products marked as “waterproof” are warranted against defects in materials and workmanship relating to moisture ingress.
Rice Lake Weighing Systems June 20, 2013 16953 Rev A
