PCB Piezotronics
PCB Piezotronics 639A91 Triaxial Accelerometer Series
Model 639A91:High frequency triaxial, industrial, ceramic shear ICP® accel., 100 mV/g, 0.5 to 13k Hz, side exit, 4-pin M12 connector, triaxial frequen
Available models include 639A91, EX639A91.

Model 639A91:High frequency triaxial, industrial, ceramic shear ICP® accel., 100 mV/g, 0.5 to 13k Hz, side exit, 4-pin M12 connector, triaxial frequen
This series groups the official PCB Piezotronics variants listed below. Model differences such as sensitivity, range, connector, temperature rating, hazardous-area option, or microphone response are shown in the table.
Key Features
Model 639A91:High frequency triaxial, industrial, ceramic shear ICP® accel., 100 mV/g, 0.5 to 13k Hz, side exit, 4-pin M12 connector, triaxial frequen
- Sensitivity: (±10%)100 mV/g (10.2 mV/(m/s²))
- Measurement Range: ±50 g pk (±491 m/s² pk)
- Frequency Range: (±3dB)0.5 to 13 kHz
- Electrical Connector: 4-Pin, M12
Model & Varian
| Model | Official Variant Description | Sensitivity (±10 %) | Measurement Range | Frequency Range (±5 %) | Frequency Range (±3 dB) | Resonant Frequency | Broadband Resolution (1) | Non-Linearity | Transverse Sensitivity |
|---|---|---|---|---|---|---|---|---|---|
| 639A91 | 639A91 High Freq Triaxial Accelerometer | 100 mV/g / 10.2 mV/(m/s²) / [1] | ±50 g pk / ±491 m/s² pk | 1.5 to 5500 Hz | 0.5 to 13 kHz | ≥26 kHz | .3 mg / 3.0 mm/s 2 rms / [3] | 1 % / [2] | ≤5 % |
| EX639A91 | EX639A91 Intr Sf High Freq Triax Accel | 100 mV/g / 10.2 mV/(m/s²) / [1] | ±50 g pk / ±491 m/s² pk | 1.5 to 5500 Hz | 0.5 to 13 kHz | ≥26 kHz | .3 mg / 3.0 mm/s 2 rms / [3] | 1 % / [2] | ≤5 % |
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Spesifikasi
| Sensitivity (±10 %) | 100 mV/g / 10.2 mV/(m/s²) / [1] |
|---|---|
| Measurement Range | ±50 g pk / ±491 m/s² pk |
| Frequency Range (±5 %) | 1.5 to 5500 Hz |
| Frequency Range (±3 dB) | 0.5 to 13 kHz |
| Resonant Frequency | ≥26 kHz |
| Broadband Resolution (1) | .3 mg / 3.0 mm/s 2 rms / [3] |
| Non-Linearity | 1 % / [2] |
| Transverse Sensitivity | ≤5 % |
| Overload Limit (Shock) | ±5000 g pk |
| Temperature Range (Operating) | -65 to 250 °F / -54 to 121 °C |
| Temperature Response | See Graph %/°F / [3] |
| Enclosure Rating | IP68, IP69K |
| Excitation Voltage | 18 to 30 VDC |
| Constant Current Excitation | 2 to 20 mA |
| Output Impedance | ≤150 Ohm |
| Output Bias Voltage | 8 to 12 VDC |
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