BENTLY NEVADA 3300/12-01-20-00 Dual Thrust Position Monitor

Description

The BENTLY NEVADA 3300/12-01-20-00 Dual Thrust Position Monitor is a specialized device designed for continuous measurement and monitoring of shaft axial position related to machine tool axial clearance. It features dual independent channels that can simultaneously monitor either the same shaft collar or two distinct positions on a single shaft, enhancing monitoring accuracy and reliability. A key capability is early thrust bearing fault detection, which supports safe equipment operation by identifying potential issues before they escalate. The monitor delivers high-precision, high-stability measurements using input from proximity probes that detect gap voltage to determine thrust position. To prevent false alarms caused by sensor faults such as out-of-range gaps, it supports configuration with two proximity probes set to an AND voting logic, where both sensors must reach or exceed alarm setpoints to trigger an alarm relay. Technical specifications include user-programmable power of -24 Vdc or -18 Vdc with current limiting on the monitoring circuit board, and user-selectable frequency response of 4 to 4,000 Hz (240 to 240,000 cpm) or 1 to 600 Hz (60 to 36,000 cpm); note that the 1 to 600 Hz range is not recommended for machines requiring fast start/coastdown rates or acceleration/deceleration over 1000 rpm/s.