ESAL Spring Balance
Product Code : SCL-PLE-11716
The StemAids ESAL Spring Balance is a high-durability laboratory instrument engineered for the empirical study of force, weight, and elasticity. Optimized for Secondary and Technical Vocational (TVET) physics, this balance utilizes a precision-tempered alloy spring to facilitate the quantification of Newtonian forces. Manufactured to ISO 9001:2015 standards, it provides a ruggedized, clear-scale solution for verifying Hooke’s Law and Archimedes' Principle within institutional laboratory environments.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Measurement Media |
High-tensile, fatigue-resistant steel alloy spring |
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Dual Scale Graduation |
Calibrated in Newtons (N) and Grams (g) |
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Available Ranges |
1N/100g, 2.5N/250g, 5N/500g, 10N/1000g, up to 50N |
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Chassis Construction |
High-impact transparent acrylic or anodized aluminum housing |
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Zero-Adjustment |
Integrated top-mounted calibration nut for "zeroing" under no load |
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Interface Hardware |
Stainless steel suspension ring and load hook |
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Functional Principle |
Hooke’s Law (F=kx) |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
8423.81.00 (Weighing machinery; maximum capacity not exceeding 30kg) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Linear Elasticity Interface: Facilitates student visualization of the proportional relationship between applied force and spring extension, supporting Mechanics Module 101.
- Force Quantification: Enables the physical study of gravity, allowing learners to apply the balance to measure the weight of various laboratory objects in Newtons.
- Vector Analysis Utility: Supports the analysis of resultant forces when multiple balances are used in parallelogram of forces experiments.
- Accuracy & Calibration Evaluation: Allows students to evaluate the importance of "zeroing" the instrument and accounting for the elastic limit of materials.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring internal shock-absorption to prevent spring deformation or "set" during long-duration transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and individual batch-calibration certificates.
- Durability: Tropicalized design featuring corrosion-resistant internal components and UV-stable scales for reliable performance in varied climates (up to 45°C).
Direct OEM Sourcing Advantages
Procuring the StemAids ESAL Spring Balance directly ensures vertical manufacturing control:
- In-House Precision Calibration: Every spring is batch-tested for linearity across its full range to ensure accuracy within ±1 scale division.
- Batch-Tested for Fatigue Resistance: Springs undergo repetitive load cycling tests to ensure the "zero point" remains stable over thousands of classroom uses.
- Direct Factory Spares Availability: Guaranteed availability of replacement suspension hooks, rings, and outer clear casings to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the metallurgical tempering process ensures the springs maintain their specific k constant without permanent elongation under rated loads.
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