Vibration Sensor Array for Rotor Balancing Machines

Product Specifications

Technical details and manufacturing context for Vibration Sensor Array

Definition

The Vibration Sensor Array is a component of an Electric Motor Rotor Balancing Machine. It consists of multiple vibration sensors strategically positioned to detect and measure vibration amplitudes and frequencies across different points of a rotating rotor. This array provides comprehensive vibration data necessary for identifying imbalance locations and calculating required counterweights. The sensors convert mechanical vibrations into electrical signals using piezoelectric or MEMS technology. Multiple sensors capture data simultaneously from different positions, allowing for phase analysis and precise localization of imbalance points. The signals are processed to determine vibration amplitude, frequency, and phase relationships. The array is housed in corrosion-resistant stainless steel (316L) and includes piezoelectric ceramic elements, electronic circuit boards, and shielded cables. It offers selectable channel configurations from 4 to 16, depending on rotor size and measurement points. The measurement range is 0–100 g, with a frequency response of 0.5–10000 Hz, covering typical rotor balancing frequencies. Sensitivity ranges from 10 to 100 mV/g, and overall accuracy is ±5% per ISO 2954. The operating temperature range is -40 to 85 °C, and ingress protection is IP65–IP67 per IEC 60529. The supply voltage is 24 V DC ±10%, and the output signal is a 4–20 mA current loop for long-distance transmission. Each sensor weighs between 0.5 and 2.0 kg, depending on configuration. These specifications are reference ranges; verify model-specific values with the manufacturer. The array is designed for industrial environments and integrates with balancing machines for precise rotor correction.

Working Principle

The vibration sensor array operates by converting mechanical vibrations from the rotating rotor into electrical signals using piezoelectric or MEMS sensors. Multiple sensors capture vibration data simultaneously from different positions, allowing for phase analysis and precise localization of imbalance points. The signals are processed to determine vibration amplitude, frequency, and phase relationships. This data is used to calculate the required counterweights for balancing.

Common Materials

Piezoelectric ceramic elements, Stainless steel housing, Electronic circuit boards, Shielded cables

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of Channels	4–16	Selectable based on rotor size and measurement points.
Measurement Range	0–100 g	Acceleration range for vibration sensing.
Frequency Response	0.5–10000 Hz	Covers typical rotor balancing frequencies.
Sensitivity	10–100 mV/g	Higher sensitivity for low-level vibrations.
Accuracy	±5 %	Overall measurement accuracy.ISO 2954
Operating Temperature	-40–85 °C	Industrial temperature range.
Ingress Protection	IP65–IP67	Dust-tight and water-resistant.IEC 60529
Supply Voltage	24 ±10% V DC	Standard industrial power supply.
Output Signal	4–20 mA	Current loop for long-distance transmission.
Housing Material	316L	Corrosion-resistant stainless steel.ASTM A240
Weight	0.5–2.0 kg	Per sensor, depending on configuration.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Piezoelectric Sensor Elements Part
Convert mechanical vibrations into electrical signals

Material: Piezoelectric ceramic
Sensor Mounting Brackets Part
Secure sensors in precise positions relative to rotor

Material: Stainless steel
Signal Conditioning Circuitry
Amplify and filter sensor signals for processing

Material: Electronic components on PCB
Shielded Cable Harness
Transmit sensor signals to data acquisition system

Material: Copper conductors with EMI shielding
MEMS Sensor Elements Optional
Sense vibration on the MEMS-based version of the array.

Manufacturers of Vibration Sensor Array

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Frequently Asked Questions

What is the typical number of channels in this vibration sensor array?

The array can be configured with 4 to 16 channels, selectable based on rotor size and measurement points. The exact number depends on the specific application and should be confirmed with the manufacturer.

What is the measurement range and frequency response?

The measurement range is 0 to 100 g, and the frequency response is 0.5 to 10000 Hz, covering typical rotor balancing frequencies. These are reference values; verify for the specific model.

What standards are referenced for accuracy and ingress protection?

Accuracy is ±5% per ISO 2954, and ingress protection is IP65–IP67 per IEC 60529. These standards are procurement references and do not guarantee compliance; verify with the supplier.

What is the output signal and supply voltage?

The output signal is a 4–20 mA current loop for long-distance transmission, and the supply voltage is 24 V DC ±10%. Confirm these specifications with the manufacturer for your application.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 10 bar
temperature:	-40°C to +85°C
vibration range:	0.1 to 1000 Hz
acceleration range:	±50 g
operating humidity:	0-95% non-condensing

Vibration Sensor Array

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