Bently Nevada 3500/50 Tachometer Module for Shaft Speed Monitoring

• 2-Channel Module
• Accepts Input from Proximity Probes or Magnetic Pickups
• Peak Hold Stores Highest Speed, Highest Reverse Speed, Number of Reverse Rotations
• Able to Reset the Peak Values
• Supplies Conditioned Keyphasor Signals to the Blackplane of the 3500 Rack

The GE / Bently Nevada 3500/50 and 3500/50M Series Tachometer Module is a 2-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotative speed, rotor acceleration, rotor direction. The module compares these measurements against user-programmable alarm setpoints and generates alarms when the setpoints are violated.

The 3500/50M Tachometer Module can be configured to supply conditioned Keyphasor* signals to the backplane of the 3500 rack for use by other monitors. Therefore, you don't need a separate Keyphasor module in the rack. The 3500/50M Tachometer Module has a peak hold feature that stores the highest speed, the highest reverse speed, or the number of reverse rotations that the machine has reached. You can reset the peak values.

3500/50M, 3500/50, 350050M, 350050, 3500/50M-01, 3500/50-01

The system provides an output voltage directly proportional to the distance between the probe tip and the observed conductive surface. It is capable of both static (position) and dynamic (vibration) measurements, and is primarily used for vibration and position measurement applications on fluid-film bearing machines, as well as Keyphasor and speed measurement applications.

The system provides an accurate, stable signal output over a wide temperature range. All 3300 Proximity Transducer Systems achieve this level of performance while allowing complete interchangeability of probe, extension cable, and Proximitor Sensor without the need for individual component matching or bench calibration.

Proximitor Sensor: The 3300 Proximitor Sensor offers many improvements over previous Bently Nevada eddy current transducers with better linearity and temperature stability. It also uses an integral isolation plate as its base, eliminating the need for separate isolator plates.

Proximity Probes and Extension Cable: The 3300 XL 8 mm probe, 3300 5 mm probe, and 3300 XL extension cable also reflect improvements over previous designs. A patented TipLoc molding method provides a more robust bond between the probe tip and the probe body. The probe's cable is more securely attached as well, incorporating a patented CableLoc design that provides 330 N (75 lb) pull strength for 8 mm probe where the probe cable attaches to the probe tip. Probes (8 mm only) and Extension Cables can also be ordered with an optional FluidLoc cable option. This option prevents oil and other liquids from leaking out of the machine through the cable's interior.