The3300/20-12-01-02-03-02is a high-precisionDual Thrust Position Monitorfrom the legacy Bently Nevada 3300 series. This module is dedicated to the continuous measurement of axial shaft position in critical rotating machinery. By monitoring the "float" of the shaft within its thrust bearings, it provides an essential safety layer for turbines, compressors, and large motors.
Model Number:3300/20-12-01-02-03-02
Product Type:Dual Thrust Position Monitor
Full-Scale Range (12):±1.0 mm (40-0-40 mils)
Transducer Input (01):3300 or 7200 Proximitor® Systems
Alarm Relay (02):Hermetically Sealed (for superior environmental protection)
Agency Approval (03):CSA/NRTL/C (Class 1, Div 2 ready)
Safety Barrier (02):Internal Barriers included
Display Accuracy:±1.6% of full scale
Power Supply:120V AC (Nominal 1.5 Watts)
Operating Temp:0°C to +65°C
Key Features
Dual-Channel Redundancy:Provides two independent channels of thrust monitoring, allowing for "voting" logic (such as 2-out-of-2) to prevent nuisance trips while ensuring maximum protection.
Hermetically Sealed Relays:Equipped withOption 02relays, which are vacuum-sealed to prevent contact oxidation and ensure reliable switching in corrosive or damp environments.
Integrated Safety Barriers:Featuresinternal barriers (Option 02)that limit the electrical energy sent to the probes in the field, making it suitable for installations in potentially explosive atmospheres.
High-Visibility Display:Includes a83 mm vertical displaythat provides operators with a clear, real-time visual of the shaft's axial position relative to the center.
Comprehensive Fault Diagnostics:Continuously monitors the health of the connected Proximitor systems and field wiring, triggering an "OK" LED status change if a fault is detected.
Industry Standard Compliance:Meets CSA/NRTL/C requirements, ensuring the unit adheres to North American safety and electrical standards for industrial control equipment.
