Accelerometer Sensor Calibrators
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Overview

The VC20 – VC21 – VC21D portable calibrators are advanced tools essential for verifying the calibration of accelerometer sensors. Suitable for use with various types of accelerometers, these devices identify any anomalies in the measurement chain thanks to the modern technologies employed in their design.

The VC20 – VC21 – VC21D models are ideal for verifying the calibration of low-frequency sensors used in applications compliant with ISO 8041 (human body vibration) and DIN 4150-3 (building vibration), especially with the VC21D model. Made of highly durable materials, these calibrators can be powered by mains (with an included power supply and various connection options) or by battery for maximum flexibility. Each instrument is supplied with PTB traceability and a calibration certificate, ensuring accurate and reliable measurements.

PORTABLE CALIBRATORS VC20 – VC21 – VC21D

Developed with the latest technology, the portable calibrators VC20, VC21, and VC21D are essential for verifying the calibration of accelerometer sensors.
They can be used with various types of accelerometers to detect potential anomalies.

They are ideal for verifying the calibration of Low Frequency sensors, according to standards such as:

  • ISO 8041 (human body vibration)

  • DIN 4150-3 (building vibration)

Built from highly durable materials, they can operate on mains power (adapter included with multiple connection options) or battery power.
All calibrators come with PTB traceability and a calibration certificate.

FEATURES

  • Designed for sensor testing with mass over 600g

  • Vibration magnitude: 10 m/s² (VC20) or selectable in 5 steps from 1 to 20 m/s²

  • Quartz-controlled vibration frequency: 159.15 Hz (VC20) or selectable in 7 steps from 15.92 Hz to 1280 Hz (VC21 / VC21D)

  • Display shows frequency, amplitude, and intensity (magnitude) in real time

  • VC21D features a quick-release sensor mounting system, enabling dynamic calibration of non-contact displacement sensors (Proximity Probes)

  • VC21D includes a synchronized output signal for integration with external measurement systems

  • PTB traceability and calibration certificate included

  • Operates on battery or mains power for on-site use

  • Power adapter included with multiple connection possibilities

FIELDS OF APPLICATION

  • Quick and easy calibration of force sensors, accelerometers, and displacement sensors

KIT INCLUDES

  • Portable calibrator

  • User manual

  • Calibration report

  • Adapter set for accelerometer mounting

  • Hard carrying case

TECHNICAL SPECIFICATIONS

VC20 VC21 / VC21D
Vibration Frequency 159.2 Hz 15.92 Hz 40 Hz 80 Hz 159.2 Hz 320 Hz 640 Hz 1280 Hz
Acceleration (rms) 10m/s² 1m/s²2m/s² 1m/s²2m/s²

5m/s²

 1m/s²2m/s²

5m/s²

10m/s²

 1 m/s²2 m/s²

5 m/s²

10 m/s²

20 m/s²

 1 m/s²2 m/s²

5 m/s²

10 m/s²

20 m/s²

 1 m/s²2 m/s²

5 m/s²

10 m/s²

20 m/s²

 1 m/s²2 m/s²

5 m/s²

10 m/s²

20 m/s²
Vibration Velocity (rms) at Angular Frequencies 100 s⁻¹ – 1000 s⁻¹ 10 mm/s 10 mm/s
20 mm/s		 1 mm/s
2 mm/s
5 mm/s
10 mm/s
20 mm/s
Vibration Displacement (rms) at Angular Frequencies 100 s⁻¹ – 1000 s⁻¹ 10 µm 100µm200 µm 1 µm

2 µm

5 µm

10 µm

20 µm
Maximum Sensor Weight 600 g

(10m/s²)

 500 g

(1/2m/s²)

 500 g

(1/2/5m/s²)

 500 g

(1/2/5/10 m/s²)

 500 g

(1/2/5/10m/s²)

250 g

(20 m/s²)

 500 g

(1/2/5/10m/s²)

200 g

(20 m/s²)

 500 g

(1/2/5/10m/s²)

400 g

(10 m/s²)

100 g

(20 m/s²)

 500 g

(1/2/5m/s²)

200 g

(10 m/s²)

50 g

(20 m/s²)
Maximum Amplitude Error  ±3% (0…40 °C); ±5% (−10…55 °C)
Maximum Frequency Error ±0.05%
Clock Output (VC21D) Internal clock for sensor reference – BNC, 3.3 V
Transverse Vibration <10% <10% <10% <10% <10% <20% <20% <10%
Harmonic Distortion <1% <5% <1% <1% <1% <1% <1% <1%
Sensor Mounting M5 magnetic mount – hole Ø9° ± 1°, 7 mm depth
Operating Temperature −10 °C to +55 °C
Battery Type Rechargeable internal NiMH: 7.2 V / 1.6 Ah
Battery Life Approx. 5 hours continuous with 100 g sensor
Battery Charging Time Approx. 4 hours
Charging Voltage 11 – 18 V DC 11 – 18 V DC
Charging Current < 1 A
Automatic Power-off 10 minutes Adjustable 1 – 30 Minutes
Dimensions (L × W × H) 100 × 100 × 120 mm
Weight 2.2 kg
Adapter Threads (for VC21D) M6×0.5 / M8×1 / M10×1 / M14×1 / M20×1

 

 

 

 

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