Bently Nevada 3300/35 Six-Channel Temperature Monitor

The Bently Nevada 3300/35 is a specialized temperature monitoring module within the legacy 3300 Monitoring System. It is designed to provide six independent channels of continuous, online temperature monitoring for critical machinery. This module is specifically used with Resistance Temperature Detectors (RTDs) to monitor bearing temperatures, stator windings, and other vital thermal points in turbines, compressors, and pumps.

Technical Specifications

Key Features

• Six Independent Channels: Monitors six separate points simultaneously, allowing for comprehensive thermal protection in a compact footprint.

• RTD Support: Optimized for standard RTD types, most commonly 100$\Omega$ Platinum (0.00385 coefficient).

• Alarms: Provides configurable Alert and Danger setpoints for each channel to trigger early warnings or automatic machine trips.

• Front Panel Interface: Features a 7-segment LCD display (instead of the bargraphs used on vibration modules) to show actual temperature values per channel.

Ordering Information (Suffix Codes)

The 3300/35 is configured using the following suffix code format: 3300/35-AXX-BXX-CXX-DXX-EXX

A: Full-scale Range Option

• 01: 0 to 100°C

• 02: 0 to 200°C

• 03: 0 to 150°C

• 04: 0 to 250°C

• 05: 32 to 212°F

• 06: 32 to 392°F

• (Other regional and custom ranges available)

B: Transducer Input Option

• 01: 100 Ohm Platinum (0.00385) - 3-wire

• 02: 100 Ohm Platinum (0.00392) - 3-wire

• 03: 10 Ohm Copper - 3-wire

• 04: 120 Ohm Nickel - 3-wire

• 06: 100 Ohm Platinum (0.00385) - 4-wire

C: Alarm Relay Option

• 00: No Relays

• 01: Epoxy-sealed

• 02: Hermetically-sealed

D: Agency Approval Option

• 00: Not required

• 01: CSA/NRTL/C (Class 1, Div 2)

• 02: ATEX self-certification

E: Safety Barrier Option

• 00: None

• 01: External Barriers

• 02: Internal Barriers

Engineering & Installation Notes

• Space Requirements: Unlike standard vibration monitors that occupy one slot, the 3300/35 is a "Double-Wide" module and occupies two rack positions.

• Wiring: For 3-wire RTDs, lead wire resistance compensation is critical for accuracy. Use high-quality shielded triad cable for all field connections.

• LCD Display: The front panel "Display" button allows the user to cycle through the six channels to view current values, Peak Hold values, and Alarm Setpoints.