Vibrating Table Calibration(IS 2514 — Frequency & Amplitude)
Calibration of concrete vibrating tables — vibration frequency and amplitude measured with traceable vibration meters against IS 2514 requirements for specimen compaction.
What is Vibrating Table Calibration?
Cube and cylinder results depend on full compaction — and vibrating tables that have drifted in frequency or amplitude under-compact specimens, depressing strength results and triggering false mix failures. IS 2514:1963 (Specification for Concrete Vibrating Tables) sets the performance expectations for tables used in specimen preparation.
Global Lab measures operating frequency and vibration amplitude with traceable vibration meters/accelerometers at the table surface under representative load, verifies against IS 2514 and the user's method requirements, and certifies as-found performance with drift comparison to prior records.
How the Vibrating Table Calibration is Conducted
- 1
Mounting & Condition Check
Table mounting, clamp condition and abnormal noise/vibration are inspected. - 2
Sensor Placement
Calibrated accelerometer/vibration sensor is fixed at defined table positions. - 3
Frequency Measurement
Operating frequency is measured unloaded and under representative mould load. - 4
Amplitude Measurement
Vibration amplitude is measured at the standard positions and compared with requirements. - 5
Certification
Frequency/amplitude results with verdicts are issued via Autovity QLMS.
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| IS 2514:1963 | Specification for Concrete Vibrating Tables (Reaffirmed) | Performance Requirements | Indian Standard |
| ISO/IEC 17025:2017 | Competence of Testing and Calibration Laboratories | Calibration System | International |