sourcing map 100kg Electronic Scale Load Cell User Manual

1. Introduction

Thank you for choosing the sourcing map 100kg Electronic Scale Load Cell. This high-precision weighing sensor is designed for various electronic weighing applications, including kitchen scales, human body bathroom scales, and jewelry scales. It converts force into an electrical signal, allowing for accurate weight measurement when integrated into a compatible weighing system.

This manual provides essential information for the proper setup, operation, and maintenance of your load cell to ensure optimal performance and longevity.

Image 1: The sourcing map 100kg Electronic Scale Load Cell, showing its compact design and integrated wiring.

2. Product Features

• High Precision: Rated load of 100kg with a non-linearity of 0.08%F.S. and hysteresis of 0.1%F.S. for accurate measurements.
• Durable Construction: Made from aluminum alloy with an anodized surface for enhanced luster and durability.
• Environmental Protection: Protected by silica gel to guard against corrosion, moisture, and aging, ensuring long-term reliability.
• Versatile Application: Ideal for integration into various electronic scales, including kitchen, human body, and jewelry scales, as well as general control systems.
• Compact Design: Small form factor (42mm x 38mm x 3mm) for easy integration into different devices.

3. Technical Specifications

4. Package Contents

• 1 x Weighing Load Cell (100kg)

5. Setup and Wiring

Proper installation and wiring are crucial for the accurate operation of the load cell. This load cell is designed to be integrated into a larger electronic weighing system, typically connected to an ADC (Analog-to-Digital Converter) or a dedicated weighing indicator.

5.1. Mechanical Installation

Mount the load cell securely to a stable, flat surface using appropriate screws through the mounting holes. Ensure that the force to be measured is applied directly and perpendicularly to the sensing area of the load cell. Avoid any side loads or twisting forces, as these can affect accuracy and potentially damage the sensor.

5.2. Electrical Wiring

The load cell comes with four color-coded wires for electrical connection. Refer to the image below for a visual reference of the wire ends. It is essential to connect these wires correctly to your weighing indicator or ADC module. While standard color codes exist, always verify with your specific weighing system's documentation.

Image 2: Close-up view of the load cell's four color-coded wires, ready for connection.

A common wiring configuration for 4-wire load cells is as follows:

• Red Wire: Excitation+ (E+) / VCC+ (Power Supply Positive)
• Black Wire: Excitation- (E-) / GND (Power Supply Negative)
• White Wire: Signal+ (S+) / Output+
• Blue Wire: Signal- (S-) / Output-

Connect the Excitation wires to the power supply of your weighing module (typically 5V DC as recommended). Connect the Signal wires to the analog input of your ADC or weighing indicator. Ensure all connections are secure and insulated.

6. Operating Principles

The sourcing map load cell operates on the principle of strain gauges. When a force (weight) is applied to the load cell, its internal structure deforms slightly. Strain gauges bonded to this structure change their electrical resistance in proportion to this deformation. These strain gauges are arranged in a Wheatstone bridge configuration.

When an excitation voltage is applied across the bridge (Red and Black wires), the change in resistance of the strain gauges causes a small differential voltage output across the signal wires (White and Blue wires). This output voltage is directly proportional to the applied force. A weighing indicator or ADC then amplifies and converts this analog voltage into a digital weight reading.

For accurate readings, the weighing system typically requires calibration after the load cell is installed. Refer to the documentation of your specific weighing indicator or ADC for calibration procedures.

7. Maintenance and Care

• Avoid Overload: Never exceed the safe overload limit (120% F.S.) or ultimate overload limit (150% F.S.) to prevent permanent damage to the load cell.
• Protect from Impact: Handle the load cell with care. Avoid dropping it or subjecting it to sudden impacts.
• Keep Clean and Dry: While the load cell has silica gel protection, it is best to keep it clean and dry. Avoid exposure to excessive moisture, dust, or corrosive substances.
• Stable Environment: Operate the load cell in a stable temperature environment as extreme temperature fluctuations can affect accuracy.
• Secure Connections: Periodically check electrical connections to ensure they remain secure and free from corrosion.

8. Troubleshooting

If you encounter issues with your load cell, consider the following common troubleshooting steps:

• No Reading or Erratic Readings:
  • Check all wiring connections for looseness or incorrect polarity.
  • Ensure the excitation voltage supplied to the load cell is within the recommended range (5V DC).
  • Verify that the load cell is mechanically stable and not experiencing any unintended side loads or vibrations.
  • Inspect the load cell for visible damage.
• Inaccurate Readings:
  • Perform a system calibration according to your weighing indicator's manual.
  • Ensure the load cell is mounted correctly and the force is applied axially.
  • Check for environmental factors like temperature changes or air currents affecting the measurement.
  • Confirm that the load applied does not exceed the rated capacity.
• Load Cell Not Responding:
  • Test the continuity of the wires.
  • Measure the resistance across the excitation and signal lines (refer to load cell specifications for expected values, though not provided here).
  • If possible, test with a known good weighing module or another load cell to isolate the problem.

9. Warranty and Support

sourcing map products are manufactured to high quality standards. For any technical assistance, warranty inquiries, or support, please contact your retailer or the manufacturer directly. Please have your product model number (SYNCELEC007561) and purchase details ready when contacting support.

For more information, visit the official sourcing map website or refer to the product listing where you purchased this item.