PCB Piezotronics, Inc. 4-20 mA Output Velocity Sensor 641B02

The PCB Piezotronics 641B02 is a 4-20 mA output velocity sensor designed for measuring vibration with a measurement range of 0.0 to 2 in/sec RMS (0.0 to 50.8 mm/s RMS). It operates within a frequency range of 600 to 60,000 cycles per minute (10 to 1 kHz) and features a broadband resolution of 0.01 in/sec RMS (0.26 mm/s RMS). The sensor exhibits a non-linearity of ¬±1%. This model is suitable for harsh environments, with an operating temperature range of -40 to 185 ¬8F (-40 to 85 ¬8C) and an IP68 enclosure rating, ensuring protection against dust and water ingress. The sensor is powered by an excitation voltage of 12 to 30 VDC and has a settling time of less than 15 seconds to within 2% of the value. Physically, the sensor has a hex size of 1.0 in and a height of 2.6 in, weighing 4.7 oz (131 g). It features a stainless steel housing with a welded hermetic seal and is equipped with a 2-pin MIL-C-5015 electrical connector. The sensor is also designed for hazardous areas, with various approvals for different classifications. Overall, the 641B02 is a robust choice for applications requiring reliable vibration measurement in challenging conditions.