RS91N intelligent condition monitoring and protection instrument can realize the measurement function of different monitoring conditions by changing parameters through transmitter configuration, and can monitor and protect vibration acceleration, vibration velocity (rms,pk), shell vibration (absolute vibration), shaft vibration, shaft displacement, low frequency vibration velocity, thermal expansion, eccentricityand other conditions. The condition monitoring and protection device meets the requirements of low frequency (0.2-30Hz) and medium frequency (2.5Hz-5kHz) for users to choose. When the external key-phase eddy current sensor is connected, it can display the real-time waveform, pass-frequency vibration amplitude, rotating speed and 1X phase of each channel for fault diagnosis and analysis. 

Main monitoring functions

■ Shaft vibration monitoring

■ Axis displacement monitoring

■ Acceleration monitoring

■ Speed monitoring

■ Monitoring of shell vibration (absolute vibration)

■ Differential expansion monitoring

■ Thermal expansion monitoring

■ Swing monitoring

■ Eccentricity monitoring

 Matching sensor

■ Eddy current sensor

■ Piezoelectric speed sensor

■ Low frequency piezoelectric speed sensor

■ Acceleration sensor

■ Magnetoelectric speed sensor

■ Thermal expansion sensor

Technical specification

■ 2+(1 speed) channel field instrument with 5.7-inch color display touch screen

■ The instrument has: Bar chart display, trend chart, data list, page turning query

■ Touchable configuration, USB configuration, and network port configuration

■ The instrument has the functions of clock display and alarm time inquiry

■ Configurable alarm relay independent output or logic output

■ Meet the requirements of low frequency 0.2 Hz ~ 30 Hz, or pass frequency 2.5 Hz ~ 10 khz

■ The instrument provides sensor power supply:

-24VDC (current limiting operation of power supply eddy current sensor 20mA)

+24VDC (constant current operation of voltage transmission inductor is 4 ~ 6 mA)

■ two BNC heads are provided to independently buffer the original signal output (BUF)

■ Output four (2) independent 4 ~ 20m signals (maximum load 500ω); R485 communication

■ Working voltage: ac220 10%