Introduction
The proving ring is a grade 0.3(3‰) “force value” measuring instrument,
It is designed to calibrate material testing machine and compression testing machine.
It can also be used to test and calibrate “force value” for other apparatus, equipment and components.
It is characterized by reliable readouts, zero drift, good quality, aging-resistant, and zero worn-out.
It is inexpensive, easy to operate, accurate and safe and suitable for applications in quality monitoring, metrological testing,
scientific institutes, colleges and universities, and quality inspection
scientific institutes, colleges and universities, and quality inspection
Specification
Scope of measurement: 10% of the max testing force ~ the max test force
Repetitive error and Long-term stability of the displayed value:≤0.3%
Relative error of the displayed value produced between advance and return: ≤1.5 %
Scope of measurement: 10% of the max testing force ~ the max test force
Repetitive error and Long-term stability of the displayed value:≤0.3%
Relative error of the displayed value produced between advance and return: ≤1.5 %