Model: 640B60

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Industrial vibration sensor, 4 to 20 mA output, 0 to 0.5 in/sec pk, 3 to 1k Hz, top exit, 10-ft integral armor cable

  • Measurement Range: 0.0 to 0.5 in/sec pk (0.0 to 12.7 mm/s pk)
  • Output: 4-20 mA
  • Frequency Range: (±10%) 180 to 60000 cpm (3 to 1 kHz)
  • Sensing Element: Ceramic
  • Weight: 4.7 oz (131 gm)

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Measurement Range0.0 to 0.5 in/sec pk0.0 to 12.7 mm/s pk[3] 
Output4-20 mA4-20 mA 
Frequency Range (±10 %)180 to 60000 cpm3 to 1 kHz[1][2] 
Broadband Resolution0.005 in/sec pk0.13 mm/s pk[4] 
Non-Linearity±1 %±1 % 
Temperature Range-40 to 185 °F-40 to 85 °C 
Excitation Voltage12 to 30 VDC12 to 30 VDC 
Settling Time (within 2% of value)<15 sec<15 sec 
Electrical Isolation (Case)>100000000 >100000000  
Size - Hex1.0 in25.4 mm 
Size - Height4.2 in107 mm 
Weight (without cable)4.7 oz131 gm 
Mounting Thread1/4-28 UNFNo Metric Equivalent 
Mounting Torque3 to 5 ft-lb4 to 7 Nm 
Sensing ElementCeramicCeramic 
Sensing GeometryShearShear 
Housing MaterialStainless SteelStainless Steel 
SealingWelded HermeticWelded Hermetic 
Electrical ConnectorIntegral Armored CableIntegral Armored Cable 
Electrical Connection PositionTopTop 
Electrical Connections (Red)4-20 mA Pos (+)4-20 mA Pos (+) 
Electrical Connections (Blue)4-20 mA Neg (-)4-20 mA Neg (-) 
Cable Length10 ft3.0 m 
Cable TypePolyurethanePolyurethane 

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.
081A40Mounting Stud(1)
ICS-4NIST-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 ApprovalEEx nL IIC T4, -40°C≤Ta≤80°C, II 3 G
    Hazardous Area ApprovalDIV I, CL I, II, III, GRPS A-G, Exia, AExia, IIC T4
    Hazardous Area ApprovalDIV II, CL I, GRPS A-D, ExnL, AExnA, IIC T4
    Hazardous Area ApprovalEEx ia IIC T4, -40°C≤Ta≤80°C, II 1 G
(M) Metric Mount
    M081A61Mounting Stud(1)
(RV) Buffered Analog Signal Output - 100 mV/g (±20%)
    Electrical ConnectorIntegral Armored Cable
    Electrical Connections (Red)4-20 mA Pos (+)
    Electrical Connections (Black)4-20 mA Neg (-)
    Electrical Connections (White)Signal Output Pos
    Electrical Connections (Green)Signal Output Neg
Product Documents
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