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s-type load cell

Dual-Force Precision: The Engineering Power of ADI CONTROLS AST-221 S-Type Load Cell

In modern industrial systems, tension and compression measurement plays a crucial role in maintaining accuracy, safety, and process efficiency.
Whether used in crane scales, tensile testing machines, batching systems, or cable tension monitoring, a dependable load cell ensures every force reading is precise and consistent.

At ADI Controls, we design sensors that engineers can rely on, even in the most demanding conditions. Our AST-221 S-Type Load Cell represents the perfect combination of strength, sensitivity, and stability, delivering exceptional accuracy for both tension and compression applications.

What is an S-Type Load Cell?

Named after its characteristic “S” shape, the S-Type load cell is a strain gauge–based transducer designed to measure bidirectional forces.
When a load is applied along its axis, the central section of the sensor deflects slightly, creating strain on precision-mounted strain gauges. This strain is converted into an electrical signal directly proportional to the applied force.

The result: high accuracy, linear response, and repeatable performance in both pull (tension) and push (compression) modes.

Key Features of ADI CONTROLS AST-221

Engineered for performance and durability, the AST-221 is the ideal choice for laboratory and industrial environments where precision and versatility are essential.

Technical Highlights

  • Dual-Mode Measurement: Accurately measures both tension and compression forces.
  • High Accuracy: Excellent linearity and repeatability ensure dependable results.
  • Robust Construction: Made from nickel-plated alloy steel for strength and corrosion resistance.
  • Environmental Protection: IP67/IP68 rated for operation in dusty, humid, or outdoor conditions.
  • Wide Capacity Range: Available from 50 kg to 10,000 kg, suitable for light to heavy-duty applications.
  • Temperature Compensation: Stable output across varying ambient temperatures.
  • Easy Mounting: Standard threaded eye bolts or load rods allow quick integration.
  • Compact Design: Symmetrical body simplifies alignment in suspended and inline setups.

Applications of the AST-221 S-Type Load Cell

  • The ADI CONTROLS AST-221 is a trusted choice for engineers across various industries. Common applications include:
  • Crane and Hanging Scales
  • Tensile and Compression Testing Machines
  • Batching and Dosing Systems
  • Cable Tension Monitoring
  • Press Force Measurement
  • Material Handling Equipment
  • Automation and Robotics Systems

  • With its ability to handle both push and pull forces, the AST-221 offers engineers a unified solution for multiple load measurement challenges.

Technical Highlights

Parameter Specification
Model
AST-221
Type
S-Type (Tension & Compression)
Rated Capacities
50 kg to 10,000 kg
Output Sensitivity
3.0 ± 0.0020 mV/V
Non-Linearity
< ±0.02% of Rated Output
Hysteresis
< ±0.02% of Rated Output
Creep (30 min)
< ±0.03% of Rated Output
Temperature Compensation Range
−10°C to +65°C
Protection Class
IP68, IP67
Mounting
Threaded Eye Bolts / Load Rods
Material
Nickel-Plated Alloy Steel
Cable Length
3 meters (custom options available)

Engineering Advantages

The AST-221 is designed with precision strain gauges and temperature-compensated circuitry, ensuring signal stability under fluctuating loads or ambient changes.
Its symmetrical design minimizes side-loading effects, making it ideal for dynamic or suspended systems.

Each load cell undergoes rigorous quality testing and calibration to guarantee consistent output across its entire measurement range.

Why Engineers Choose ADI CONTROLS

  • Field-Proven Reliability: Built to withstand industrial environments.
  • Precision Manufacturing: Every unit calibrated and verified for accuracy.
  • Flexible Integration: Compatible with most standard load indicators and amplifiers.
  • End-to-End Support: From selection to installation, ADI provides engineering assistance at every stage.

  • The AST-221 exemplifies ADI CONTROLS’ commitment to engineering precision, reliability, and performance

Precision in Practice

When your application demands precise measurement under both tension and compression, the ADI CONTROLS AST-221 S-Type Load Cell delivers unmatched accuracy and durability.
Engineered for consistency and built for the field, it’s the preferred choice for engineers who measure what truly matters. These load cells are also known as 20210

At ADI CONTROLS, we don’t just build load cells, we build trust in every measurement.