Model: EX640B71

$465.00 USD
(Pricing valid in US only)

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Intrinsically-safe vibration sensor, 4 to 20 mA output, 0 to 1.0 in/sec pk, 3 to 1k Hz, top exit, terminal block with conduit elbow

  • Measurement Range: 0.0 to 1 in/sec pk (0.0 to 25.4 mm/s pk)
  • Output: 4-20 mA
  • Frequency Range: (±3dB) 180 to 60000 cpm (3 to 1000 Hz)
  • Sensing Element: Ceramic
  • Weight: 1.2 lb (544 gm)

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Measurement Range0.0 to 1 in/sec pk0.0 to 25.4 mm/s pk[3] 
Output4-20 mA4-20 mA 
Frequency Range (±3 dB)180 to 60000 cpm3 to 1000 Hz[1][2] 
Broadband Resolution0.005 in/sec pk0.13 mm/s pk[4] 
Non-Linearity±1 %±1 % 
Temperature Range-40 to 176 °F-40 to 80 °C 
Excitation Voltage12 to 30 VDC12 to 30 VDC 
Settling Time (within 2% of value)<15 sec<15 sec 
Electrical Isolation (Case)>100000000 Ohm>100000000 Ohm 
Size - Hex3.85 in98 mm 
Size - Height5.52 in140 mm 
Weight1.2 lb544 gm 
Mounting Thread1/4 NPTNo Metric Equivalent 
Sensing ElementCeramicCeramic 
Sensing GeometryShearShear 
Housing MaterialStainless SteelStainless Steel 
Electrical ConnectorRemovable Screw TerminalsRemovable Screw Terminals 
Electrical Connection PositionTopTop 
Electrical Connections (Tab 1)4-20 mA Pos (+)4-20 mA Pos (+) 
Electrical Connections (Tab 2)4-20 mA Neg (-)4-20 mA Neg (-) 
Screw Terminal Wire Size12-24 AWG3.0 - .2mm² 

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.
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 ApprovalEx ia IIC T4, -40°C≤Ta≤80°C, II 1 G
    Hazardous Area ApprovalEx nA 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, ExnA, AExnA, IIC T4
(RV) Buffered Analog Signal Output - 100 mV/g (±20%)
    Electrical ConnectorRemovable Screw Terminals
    Electrical Connections (Tab 1)4-20 mA Pos (+)
    Electrical Connections (Tab 2)4-20 mA Neg (-)
    Electrical Connections (Tab 3)Signal Output Pos
    Electrical Connections (Tab 4)Signal Output Neg
Product Documents
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