MEMS vibration sensor GKP3

for machine monitoringfor vibration meterhigh-precision

Product Overview
The GKP3 is a triaxial vibration sensor independently developed for low-frequency vibration monitoring, featuring high precision and low noise. Each unit is calibrated and compensated across the full temperature range and undergoes approximately 336 hours of long-term stability testing before leaving the factory to ensure stable performance under diverse operating conditions and continuous testing cycles. The sensor supports static vibration measurement at 0Hz or in the 0.1–100Hz frequency band and integrates industry-standard protocols including MODBUS. Accompanying computer analysis software enables real-time display, recording and subsequent processing of measurement data. Output interfaces include RS485, RS232 and TTL.

Key features

• Triaxial MEMS vibration sensor
• Resolution: 1 µg
• Measurement range: ±2 g
• IP67 protection rating
• Output options: RS485, RS232, TTL
• Supports MODBUS / serial communication

Performance Parameters
Measurement Range: ±2 g
Bias Calibration: <1 mg
Measurement Axis: X, Y, Z
Upward / Power-Off Repeatability: <2 mg (Max)
Bias Temperature Coefficient: 0.15 mg/℃ (Type)
Resolution: 1 µg
Nonlinearity: <1 % FS (Max)
Bandwidth (3dB): 0.1 ~ 100 Hz
Cross-Axis Sensitivity: 1 %
Transverse Vibration Sensitivity Ratio: 1 %
Noise Density: 21 μg/√Hz
Resonant Frequency: 2.4 kHz
Acceleration Power-On Settlement Time: 1 s
Output Rate: 5Hz / 10Hz / 25Hz / 35Hz / 50Hz / 100Hz / 200Hz / 500Hz
Output Interface: RS232 / TTL / RS485
Communication Protocol: Serial communication protocol and MODBUS RTU protocol
Input (VDD_VSS): 9 ~ 36 VDC
Operating Current Consumption: <16 mA @ 12 VDC
Wiring Information: 2-meter PVC black aviation plug shielded wire, weight ≤130 g
Connector: Aircraft connector M12*1.0 male 5-core
Product Weight: ≤450 g (excluding cable)

Installation & Application
The sensor uses a non-contact installation design for easy system integration; it is fixed to the measured object's surface with screws to obtain the object's horizontal angle automatically. The product has excellent resistance to external electromagnetic interference and shock vibration and is suitable for applications such as satellite communication systems, vehicle handling platforms, special command vehicles, radar antenna vehicles and other low-frequency vibration monitoring scenarios.

Specifications

• Model: GKP3
• Measurement Range: ±2 g
• Resolution: 1 µg
• Noise Density: 21 μg/√Hz
• Bandwidth (3dB): 0.1 ~ 100 Hz
• Resonant Frequency: 2.4 kHz
• Output Interfaces: RS485, RS232, TTL
• Communication Protocols: Serial / MODBUS RTU
• Input Voltage: 9 ~ 36 VDC
• Operating Current: <16 mA @ 12 VDC
• Connector: M12*1.0 male 5-core
• Wiring: 2 m PVC shielded cable
• Ingress Protection: IP67
• Weight: ≤450 g (excluding cable)