PV685 piezoelectric velocity sensor

Current output: 4 to 20 mA proportional to 0 to 10, 20, 25, 50 or 100 mm/s, −25 to 90 °C, up to 1000 Hz.

The PV685 piezoelectric velocity sensor is a general-purpose industry standard 4 to 20 mA loop-powered vibration sensor (vibration transmitter) with a piezoelectric sensing element, integrated electronics and a current output. It is available with a sensitivity of 4 to 20 mA proportional to either 0 to 10, 20, 25, 50 or 100 mm/s, and in standard versions or Ex versions. The PV685 is designed and manufactured for use in harsh industrial environments, including hazardous areas (potentially explosive atmospheres).

Features
  • Designed for general-purpose vibration measurement, typically balance of plant (BOP) machinery such as compressors, gearboxes, motors, pumps and fans
  • Industry standard 4 to 20 mA loop-powered vibration sensor (vibration transmitter)
  • Quasi-static output signal (4 to 20 mA proportional to 0 to 10, 20, 25, 50 or 100 mm/s) indicating "overall" vibration
  • Typically connected to a machinery monitoring system for protection applications and/or a control system such as a DCS or PLC for monitoring and/or control applications
  • IP67 protection rating
PARAMETER Value (Imperial | Metric)
Output type Current loop (4 to 20 mA)
Sensitivity 4 to 20 mA proportional to 0 to 10, 20, 25, 50 or 100 mm/s RMS
Operating temperature range −13 to 194 °F | −25 to 90 °C
Frequency response 2 to 1000 Hz
Sensitivity tolerance ±5%
Dynamic measurement range Up to 50 g
Linearity <1% up to full scale
Transverse sensitivity <5%
Resonant frequency 5 kHz
Type of electronics Integrated
Hazardous area certifications Ex ia