PCB Piezotronics was founded in 1967 as a manufacturer of piezoelectric quartz sensors, accelerometers, and associated electronics for the measurement of dynamic pressure, force, and vibration. The unique expertise of the company was the incorporation of microelectronic signal conditioning circuitry within these sensors to make them easier to use and more environmentally compatible. These ICP® sensors gained wide popularity and became the foundation for the company's success.

Subsequent growth and steady investment in facilities, machinery, and equipment permitted a constant broadening of the product offering. Measurement capabilities expanded with the addition of piezoceramic, tourmaline, capacitive, piezoresistive, and strain gage sensing technologies. Ensuing products include industrial accelerometers, DC accelerometers, load cells, torque sensors, microphones, pressure transmitters, and calibration equipment.

The backbone of the company is its mission statement: Total Customer Satisfaction. This mission is not only supported by products that offer great value, but also backed by our industry exclusive Lifetime Warranty Plus. Factory applications engineering and a worldwide network of sales offices and representatives are readily available to assist with customer requests.

About PCB Piezotronics

Vibration Sensor - 640B02

Industrial vibration sensor, 4 to 20 mA output, 0 to 2 in/sec pk, 3 to 1k Hz, top exit, 2-pin conn.


Model: 640B02

Platinum Stock Products
Industrial vibration sensor, 4 to 20 mA output, 0 to 2 in/sec pk, 3 to 1k Hz, top exit, 2-pin conn.

  • Measurement Range: 0.0 to 2 in/sec pk (0.0 to 50.8 mm/s pk)
  • Output: 4-20 mA
  • Frequency Range: (±10%) 180 to 60000 cpm (3 to 1000 Hz)


  • Base Model
  • (M) Metric Mount

    Measurement Range 0.0 to 2 in/sec pk 0.0 to 50.8 mm/s pk [3] 
    Output 4-20 mA 4-20 mA  
    Frequency Range (±10 %) 180 to 60000 cpm 3 to 1000 Hz [1][2] 
    Broadband Resolution 0.01 in/sec pk 0.26 mm/s pk [4] 
    Non-Linearity ±1 % ±1 %  
    Temperature Range -40 to 185 °F -40 to 85 °C  
    Excitation Voltage 12 to 30 VDC 12 to 30 VDC  
    Settling Time <15 sec <15 sec  
    Electrical Isolation >100000000 Ohm >100000000 Ohm  
    Size - Hex 1.0 in 25.4 mm  
    Size - Height 2.6 in 66 mm  
    Weight 4.7 oz 131 gm  
    Mounting Thread 1/4-28 UNF No Metric Equivalent  
    Mounting Torque 3 to 5 ft-lb 4 to 7 Nm  
    Sensing Element Ceramic Ceramic  
    Sensing Geometry Shear Shear  
    Housing Material Stainless Steel Stainless Steel  
    Sealing Welded Hermetic Welded Hermetic  
    Electrical Connector 2-Pin MIL-C-5015 2-Pin MIL-C-5015  
    Electrical Connection Position Top Top  
    Electrical Connections 4-20 mA Pos (+) 4-20 mA Pos (+)  
    Electrical Connections 4-20 mA Neg (-) 4-20 mA Neg (-)  

All specifications are at room temperature unless otherwise specified.


Product Notes
[1] 1Hz = 60 cpm (cycles per minute).
[2] Current will fluctuate at frequencies below 5 Hz.
[3] Conversion Factor 1 in/sec = 0.0254 m/sec.
[4] Typical.
[5] See PCB Declaration of Conformance PS039 or PS053 for details.
081A40 Mounting Stud (1)
ICS-4 NIST-traceable single-axis amplitude response calibration from 0 cpm (0 Hz) to upper 10% frequency for 4 - 20 mA output vibration sensor (1)
Optional Versions:
(EX) Hazardous Area Approval- contact factory for specific approvals
    Hazardous Area Approval DIV II, CL I, GRPS A-D, ExnL, AExnA, IIC T4
    Hazardous Area Approval EEx ia IIC T4, -40°C≤Ta≤80°C, II 1 G
    Hazardous Area Approval EEx nL IIC T4, -40°C≤Ta≤80°C, II 3 G
    Hazardous Area Approval DIV I, CL I, II, III, GRPS A-G, Exia, AExia, IIC T4
(M) Metric Mount
     M081A61 Mounting Stud (1)
(RV) Buffered Analog Signal Output - 100 mV/g (±20%)
    Electrical Connector 3-Pin MIL-C-5015
    Electrical Connections (Pin A) 4-20 mA Pos (+)
    Electrical Connections (Pin B) 4-20 mA Neg/Signal Output Neg
    Electrical Connections (Pin C) Signal Output Pos
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