Load Proving Ring (Digital Readout) Manufacturer,Supplier and Exporter in India
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Product Code : TVT-MTE-10717
The Load Proving Ring is a calibrated load-measuring ring used as a reference standard for verifying the accuracy of testing machines and force-measuring apparatus. It offers a consistently high order of accuracy and repeatability, and is supplied calibrated in accordance with an issued calibration certificate.
How It Works
A proving ring works on the principle of elastic deformation under load: as an applied force compresses or extends the ring, a precision dial gauge mounted across its internal diameter measures the resulting deflection, which correlates to load via the ring's calibration certificate. Clamped-boss proving rings of this type are available across a range from 1 kN to 100 kN and are commonly used to fit and verify apparatus such as Marshall stability testing machines and unconfined compression test frames. Each unit is supplied with an in-house calibration certificate and a carry case for safe transport and storage.
Technical Specifications
| Parameter | Specification |
|---|---|
| Capacity | 10 kN / 20,000 lbs. |
| Repeatability | Within ±0.2% of indicated load |
| Resolution | 6.5 x 0.001 mm or 0.0001" |
| Attachment | M16 x 2.0 |
| Height | 196 mm |
| Weight | 1.6 kg |
| Available Range (Clamped Boss Type) | 1 kN to 100 kN |
| Supplied With | In-house calibration certificate & carry case |
Applications
Proving rings are used to calibrate and verify the load-measuring accuracy of testing machines used in civil and materials testing, including Marshall stability testing apparatus for bituminous mixes (referenced under ASTM D6927) and unconfined compression test frames for cohesive soils (referenced under IS 2720 (Part 10) and ASTM D2166). Proving ring calibration itself is generally carried out in accordance with IS 4169 (Method for calibration of force-proving instruments used for the verification of uniaxial testing machines) or the equivalent ASTM E74 practice.
Related Products & Category
Browse the full Miscellaneous Testing Equipments range, or see Hollow Load Cell and Load Proving Ring.
Frequently Asked Questions
What is a load proving ring used for?
It is used as a calibrated reference standard to verify the load accuracy of testing machines, such as Marshall stability or unconfined compression test frames.
What capacity range is available?
The clamped-boss type is available from 1 kN to 100 kN, with this model rated at 10 kN / 20,000 lbs.
Does this proving ring come with a calibration certificate?
Yes, it is supplied with an in-house calibration certificate and a carry case.
Request a Quote
To get a quotation for the Load Proving Ring, tell us the model or size you need, the quantity and the delivery location. Request a quote from Tvet Equipments.
Last updated: September 2026
