Weighing Terminal Operating and Configuration Guide

Weighing Terminal Operating and Configuration Guide

Weighing terminals (weight indicators) are the interface between load cells and operators or control systems. They process load cell signals and display weight readings with various functions for industrial weighing applications.

I. Setup and Configuration

1. Load Cell Connection: Connect load cells to the terminal according to the wiring diagram. Verify excitation voltage and signal connections are correct.
2. Scale Configuration: Enter scale capacity, increment size (division), and decimal point position. These parameters define the weighing range and resolution.
3. Calibration Setup: Configure the calibration method: electronic calibration (based on load cell sensitivity) or physical calibration using test weights.
4. Communication: Set up serial communication parameters (RS-232, RS-485, Ethernet) for data output to printers, computers, or control systems.

II. Calibration

1. Zero Calibration: With the scale empty and clean, perform zero calibration to establish the no-load reference point.
2. Span Calibration: Place certified test weights on the scale. Use weights totaling at least ten percent of capacity, preferably higher. Enter the test weight value.
3. Linearity Check: Verify weight readings at multiple points across the weighing range using certified test weights.
4. Corner Test: For platform scales, place a test weight in each corner to verify consistent readings across the weighing surface.

III. Maintenance

• Keep the terminal clean and dry. Wipe with a damp cloth; never use solvents.
• Inspect load cell cables for damage or loose connections
• Verify calibration quarterly or whenever the scale is moved
• Replace internal batteries in battery-powered terminals on schedule
• Protect from power surges with appropriate surge protection devices