Affordable, Durable & Perfect for Platform Scales

A Weight Bar Sensor (also known as a bar-type load cell) is a compact and highly precise weighing sensor, ideal for scales, automation systems, and IoT applications. Designed to handle capacities ranging from a few kilograms up to several hundred kilograms, weight bar sensors are the backbone of many smart weighing systems.

At Sensors and Gauges, we stock high-quality weight bar sensors along with HX711 amplifiers and ready-to-use weighing kits, making integration simple for both professionals and DIY makers.

👉 Request a Quote for Weight Bar Sensors

What is a Weight Bar Sensor?

A Weight Bar Sensor is a rectangular-shaped load cell that measures force or weight applied to it. It works on strain gauge technology, converting mechanical stress into an electrical signal.

These sensors are often used in digital weighing machines, from kitchen scales to industrial platforms.

👉 External Resource: Load Cell Solutions Australia

Features of Weight Bar Sensors

🔹 Compact Design – Slim and easy to mount
🔹 Wide Capacity Range – From 1kg to 500kg
🔹 High Sensitivity – Measures even small changes in load
🔹 Easy Integration – Works with Arduino, Raspberry Pi, or PLCs
🔹 Durable – Made for long-term industrial or consumer use

Applications of Weight Bar Sensors

⚖️ Platform & Bench Scales – Retail and lab weighing machines
🏠 DIY Smart Projects – Arduino or Raspberry Pi based weighing systems
📦 Packaging & Automation – Automated filling, batching, and sorting
🚜 Agriculture – Feed measurement, small tank weighing
🐾 Pet Care – Smart feeders for animals
🍳 Kitchen Devices – Smart kitchen scales and food portion monitors

👉 Related Internal Resource: Weight Sensor 1kg

How a Weight Bar Sensor Works

1. Weight Applied – The load presses on the bar sensor.

2. Strain Gauge Reaction – Resistance changes under stress.

3. Signal Conversion – Generates a small analog signal (mV/V).

4. Amplification – Modules like HX711 convert signals into digital data.

5. Output Display – Data is shown on LCD, PC, or cloud dashboards.

Smart Tip 💡: Use 4 bar sensors (one at each corner of a platform) for a high-accuracy digital weighing scale.

👉 External Resource: Load Cell Shop Australia

Example Circuit – Weight Bar Sensor + Arduino

For IoT makers, connecting a Weight Bar Sensor is straightforward:

• Connect E+, E-, A+, A- of the bar sensor to HX711.

• Wire HX711 to Arduino or Raspberry Pi.

• Calibrate using known weights.

• Start reading live weight values.

👉 Related Internal Resource: Weight Sensor Compatible with Arduino

Benefits of Weight Bar Sensors

✔️ Cost-Effective – Affordable and easy to source
✔️ Scalable – Suitable for both small and industrial setups
✔️ Flexible – Can be used as a single unit or in groups
✔️ IoT Ready – Pairs with Wi-Fi modules for cloud-based monitoring

Buying Guide – Choosing the Right Weight Bar Sensor

When selecting a Weight Bar Sensor, check for:

• Capacity Range – Small (1–10kg) for lab/kitchen, medium (20–50kg) for retail, high (100–500kg) for industrial

• Material – Aluminum for light loads, stainless steel for heavy loads

• Signal Output – Analog vs Digital

• Application Needs – DIY vs Industrial automation

At Sensors and Gauges, we provide bar load cells, amplifier kits, and ready-to-use weighing solutions for all industries.

👉 Shop Weight Bar Sensors Online

Location & Support

📍 Unit 27/191, McCredie Road, Smithfield, NSW 2164
📞 0477 123 699
📧 sales@sandsindustries.com.au

💬 Have a question? Drop us an email or WhatsApp anytime.

Final Thoughts – Weight Bar Sensor

A Weight Bar Sensor is one of the most versatile and affordable load cell types, suitable for everything from DIY smart scales to industrial weighing platforms. Its compact size, precision, and IoT compatibility make it the perfect choice for engineers, industries, and hobbyists alike.

At Sensors and Gauges, we supply bar-type weight sensors, HX711 amplifier kits, and complete weighing solutions designed for accuracy and reliability.

👉 Request a Quote for Weight Bar Sensors