Mid-frequency Vibration Sensors Calibration System

The YMC VCS-01 automatically calibrates the sensitivity, linearity, amplitude-frequency characteristic and phase-frequency characteristic of a vibration sensor and forms the corresponding test report. YMC states that the system is simple in composition and easy to operate, and that it conforms to ISO 16063-21:2003 “Methods for the calibration of vibration and shock transducers — Part 21: Vibration calibration by comparison to a reference transducer”. It accurately calibrates acceleration, velocity and displacement sensors and vibration meters with voltage, charge, IEPE and other outputs, and supports point-by-point comparison, sinusoidal sweep, random excitation and shock excitation methods of calibration.

Standard sets

Standard accelerometer set (YMC8305 + YMC8102B)

• Amplitude frequency response: 0.2 Hz ~ 5 kHz (±2%); 5 Hz ~ 10 kHz (±10%)
• Phase frequency response: 0.2 Hz ~ 10 kHz (±1°)
• Max. acceleration (sine): 9800 m/s²
• Transverse sensitivity: ≤2 %
• Amplitude uncertainty: Urel = 0.5 % ~ 1.0 %
• Phase uncertainty: Urel = 0.5° ~ 1.0°
• Annual stability: ≤0.5 %
• Linearity of amplitude: ≤0.5 %

Standard vibration services (YMC4808 + YMCLA-500)

• Frequency range: 5 Hz ~ 10000 Hz
• Acceleration range: 1 m/s² ~ 700 m/s² (bare table)
• Max. velocity: 1.4 m/s
• Max. displacement: 12.7 mm
• Frequency stability: ≤0.1 %
• Amplitude stability: ≤0.3 %
• Distortion: ≤5 %
• Transverse vibration: ≤10 %
• Sensitivity amplitude calibration uncertainty (k=2): 1 % ~ 2 %
• Sensitivity phase shift calibration uncertainty (k=2): 1° ~ 2°

The system consists of

• Standard accelerometer: natural quartz sensing element, high stability
• Standard exciter: permanent magnet shaker with low distortion, wide frequency response and high stability
• Linear power amplifier: high signal/noise ratio, wide frequency range and small distortion
• Multi-function vibration analyzer (2 output, 4 input): 500 kHz signal output conversion rate and 1 MHz 4-channel synchronised sampling rate
• Test and calibration software: completes all testing to the set conditions and outputs reports; automatically adjusts internal gain from the measured sensor sensitivity to hold signal/noise ratio and testing accuracy

Measurement chain

• Standard sensor and calibrated sensor mounted back-to-back on the standard exciter
• Charge amplifier
• Vibration controller
• Calibration software
• Power amplifier driving the exciter

Supplied and supported in India by TIERA, authorised distributor for YMC. Pricing and lead time on request — tell us the model and the measurement, and we will confirm the right part number.