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Vibration Sensor – 641B11

Category

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

Model: 641B11

4-20 mA Output Velocity Sensor
Industrial vibration sensor, 4 to 20 mA output, 0 to 1 in/sec RMS, 10 to 1k Hz, top exit, 10-ft integral cable

  • Measurement Range: 0.0 to 1 in/sec rms (0.0 to 25.4 mm/s rms)
  • Output: 4-20 mA
  • Frequency Range: (±10%) 600 to 60000 cpm (10 to 1 kHz
Manual
Specification
Drawing
3D Product Drawing (STP)

Specifications

ENGLISH SI
Performance
    Measurement Range 0.0 to 1 in/sec rms 0.0 to 25.4 mm/s rms [3][4]
    Output 4-20 mA 4-20 mA
    Frequency Range (±10 %) 600 to 60000 cpm 10 to 1 kHz [1][2]
    Broadband Resolution 0.005 in/sec rms 0.13 mm/s rms [5]
    Non-Linearity ±1 % ±1 %
Environmental
    Temperature Range -40 to 185 °F -40 to 85 °C
Electrical
    Excitation Voltage 12 to 30 VDC 12 to 30 VDC
    Settling Time
    Electrical Isolation >100000000 Ohm >100000000 Ohm
Physical
    Size – Hex 1.0 in 25.4 mm
    Size – Height 4.2 in 107 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 Integral Cable Integral Cable
    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 (-)
    Cable Length 10 ft 3.0 m
    Cable Type Polyurethane Polyurethane

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] Maximum frequency for 1 in/sec rms output, 700 Hz.
[5] Typical.
[6] See PCB Declaration of Conformance PS039 or PS053 for details.
Accessories:
Supplied
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
ENGLISH SI
    Hazardous Area Approval DIV II, CL I, GRPS A-D, ExnL, AExnA, IIC T4
    Hazardous Area Approval Ex d IIC T4 Gb, -20°C≤Ta≤+80°C, II 2 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
Accessories:
M081A61 Mounting Stud (1)
(RV) Buffered Analog Signal Output – 100 mV/g (±20%)
ENGLISH SI
    Electrical Connector Integral 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

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