WLSM-131 Integrated Overload Protection Weighing Module with High-Strength

Product Specification

The WLSM-131 is a high accuracy load cell weighing module constructed from aluminum alloy, designed for capacities ranging from 200g to 5kg. This weighing module features integrated overload protection and achieves mg level precision, making it the best choice for micro-volume high-precision weighing. It is mainly used for batching, filling, and production quality control in micro-dispensing metering, medicine, cosmetics, food packaging, and other small package applications. Custom cable lengths and other options are available.

This weighing module delivers a combined error of ≤0.01%F.S., non-linearity of ≤0.01%F.S., and repeatability of ≤0.01%F.S. Rated output is ~2.0mV/V, zero balance is ±0.05mV/V, and insulation resistance is ≥5000MΩ/100VDC. With recommended excitation of 2~12 VDC, this module provides stable and repeatable measurements for ultra-precision weighing tasks.

The WLSM-131 offers IP54 protection as standard, with customizable higher ratings available. It operates within a wide temperature range of -40°C to 85°C. Nominal displacement is less than 0.4mm, ensuring minimal mechanical deflection. Standard cable is Φ3.2mm × 4000mm, with custom lengths available. Safe overload is 150%F.S., and the integrated overload protection prevents damage from accidental load spikes. The aluminum alloy construction ensures lightweight durability.

Typical application scenarios:

• Micro-dispensing metering: precise control of small-volume liquids or powders

• Pharmaceutical batching: dosing and quality control for medicine packaging

• Cosmetics filling: filling machines for creams, lotions, and serums

• Food packaging: weighing small packages of snacks, spices, or ingredients

• Production quality control: checkweighers and sortation systems

• Laboratory and research: mg-level precision weighing for delicate experiments

Technical Parameters:

Capacity	200g/300g/500g/1kg/2kg/3kg/5kg
Rated output	2.0mV/V
Accuracy	mg-level
Zero balance	±0.05mV/V
Non-linearity	≤0.01%F.S.
Repeatability	≤0.01%F.S.
Hysteresis	≤0.01%F.S.
Combined error	≤0.01%F.S.
Input resistance	350±20Ω
Output resistance	350±10Ω
Insulation resistance	≥5000MΩ/100VDC
Recommended excitation	2-12VDC
Operation temp. range	-40~85℃
Safe overload	150%F.S.
IP class	IP54 (Customizable)
Cable size	Φ3.2×4000mm (Customizable)
Material	Aluminum alloy

Dimensions (Unit:mm):

                                      

                                     

Load  direction:

   

Wiring:

  

Packing and Shipping:

Load Cell Packaging and Shipping

To ensure safe arrival at your location, the load cell will be carefully packaged and shipped. The packing process is as follows:

1. The load cell will be placed in a sturdy cardboard box to protect it from external damage during shipping.
2. The box will be filled with foam padding to provide additional cushioning and prevent the load cell from moving during shipping.
3. The load cell will be sealed in a plastic bag to protect it from moisture and other environmental factors.
4.  Additional layers of bubble wrap will be provided for additional protection.
5. The carton is securely taped to prevent tampering.
6. A shipping label with your address and product information is attached to the box.
7. The package is shipped using a reliable and trusted freight carrier.

Once the package is shipped, you will receive a tracking number to monitor the status of your delivery. Please ensure that someone is available at the delivery address to receive the package to avoid any delays or problems.