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

Bearing Fault Detectors - 682B05

Bearing Fault Detector (BFD), DIN rail mount vibration transmitter (for use w/ICP® sensor), dual 4 to 20 mA outputs for overall and peak vibration 


Model: 682B05

Provides early warning of bearing and gear faults, detects impacting associated with spalling, cracking, and lubrication problems, outputs dual 4-20 mA signals for overall vibration and peak acceleration, provides excitation for ICP® accelerometers. 

  • Output Range: 4 to 20 mA (4 to 20 mA)
  • Measurement Range: 50 g (50 g)
  • Din Rail Mount: 1.38 in (35 mm)
    Input Signal 100 mV/g 10.2 mV/(m/s²)  
    Frequency Response (±3 dB) 10 to 1k Hz 10 to 1k Hz  
    Frequency Response (±3 dB) 1k or 5k to 100 kHz 1k or 5k to 100 kHz [1] 
    Measurement Range 50 g 50 g  
    Measurement Range 5/10/20 g 49.0/98.1/196.1 m/s² [3] 
    Measurement Range 0.5/1/2 in/sec 12.7/25.4/50.8 mm/sec [4] 
    Output Range 4 to 20 mA 4 to 20 mA [1][2] 
    Sampling Time (±15 %) 7 sec 7 sec  
    Span (±5 %) 16 mA 16 mA  
Control Interface
    Power LED Green Green  
    Warm Up <2 minutes <2 minutes  
    Temperature Range 32 to 158 °F 0 to 70 °C  
    Temperature Range -40 to 257 °F -40 to 125 °C  
    Supply Voltage 20 to 28 VDC 20 to 28 VDC  
    Current Consumption ≤150 mA ≤150 mA  
    Excitation Voltage (±1 V) 24 VDC 24 VDC  
    Constant Current Excitation (±1 mA) 4 mA 4 mA  
    Raw Vibration Output +/-0.01 % of Input +/-0.01 % of Input  
    Load Resistance 500 Ohm 500 Ohm  
    Size - Width 0.9 in 22.5 mm  
    Size - Height 3.9 in 99 mm  
    Size - Depth 4.5 in 114.5 mm  
    Weight <5 oz <142 gm  
    Housing Material Polyamide Polyamide  
    Screw Terminal Wire Size 24-14 AWG 0.2 - 2.5 mm²  
    Electrical Connector Removable Screw Terminals Removable Screw Terminals  
    Electrical Connector BNC Jack BNC Jack  
    Din Rail Mount 1.38 in 35 mm  
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