Rice Lake TSA Truck Scale Assembly User Manual
TSA
Truck Scale Weigh Module Kit
Installation
Guide
25709
Contents
1. Introduction ........................................................................... 1
2. Mechanical Installation ......................................................... 2
2.1 General Installation Guidelines ..................................................2
2.2 Maintaining Scale Height and Center .........................................4
2.3 Mount and Load Procedures ......................................................4
2.31 Installing the Components ..............................................4
2.32 Leveling the Base and Securing the Girder Chair...........5
2.33 Re-leveling and Securing the Base.................................5
2.34 Replacing the Load Cell..................................................6
3. Load Cell Wiring.................................................................... 7
4. Junction Box Connections, Adjustments & Calibration.... 8
5. Troubleshooting .................................................................... 8
6. Maintenance and Replacement Parts................................ 10
6.1 Maintenance.............................................................................10
6.2 Replacement Parts...................................................................10
7. Appendix—Mount Dimensions .......................................... 11
8. Limited Warranty................................................................. 12
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1. Introduction
The TSA load cell mount is used for medium to heavy capacity truck, horizontal
vessel, and general purpose weighing applications. The mounts are constructed of
cast steel and iron, and are available in two sizes with capacities of 10,000 lb to
75,000 lb. In most applications, the need for safety check rods, expansion assemblies and other peripheral hardware is eliminated by the "Unilink" suspension
design and the load equalizer pad. These design elements provide self-checking and
improved weight distribution.
The TSA mounts use the Sensortronics 65058 double-ended shear beam load cell,
which is made of high alloy tool steel, environmentally protected, and rated for a
150% maximum overload.
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2. Mechanical Installation
2.1 General Installation Guidelines
• Install a system ground in the pit close to the junction box. Use at least 1/2” x
8’ copper clad ground rod. Hook the indicator, junction box, Scale deck I-beam,
load cell grounding straps, and lightning protection devices to the system
ground. Hook all other devices, such as the printer, to the same AC power
supply as the indicator.
• If the pit fills up with water, proper drainage must be provided so that the
weighing assembly is not standing in water. Also, drip loops should be
provided on any conduit or cables going to the junction box or load cell.
• If safety check rods are necessary, consult your supervising engineer for proper
placement and stability. If bumper bolts are necessary, install them between the
scale platform and the walls of the pit. Leave about 1/8" clearance or as
applicable.
• The mount must be positioned in the direction of
travel. Also the load on each mount assembly should
be equal to each other.
• The mounting surface for the base and loading plate
must be level and parallel so that side loads and
bending moments are minimized. The mount assemblies must be plumb and level within ±0.2°.
• Because the load cell could be damaged during installation, do not use
excessive force or slam parts on the load cell. Also, when any welding is
required on the mount, remove the load cell from the mount so it is not damaged
by welding currents or excessive heat.
Direction of Travel
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Fig. 2-1: Typical configuration of foundation, mount, and scale deck I-beam
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