Bently Nevada 3300/20-12-01-02-01-02 Dual Thrust Position Monitor

Overview

The 3300/20-12-01-02-01-02 3300/20 Dual Thrust Position Monitor provides early warning of thrust bearing failure by continuously measuring and monitoring two independent channels of shaft axial position. This is done relative to the axial clearances within the machine. Ideally, the axial probes are installed to observe the thrust collar directly, enabling accurate measurement of the collar’s position relative to the thrust bearing clearance.

Key Specifications

Inputs

Signal Inputs: Accepts one or two proximity probe signal inputs.
Input Impedance: 10 kΩ.
Sensitivity: Programmable for 200 mV/mil (8 V/mm) or 100 mV/mil (4 V/mm).
Power: 1.5 watts nominal consumption.

Signal Conditioning

Accuracy: Within ±0.33% of full-scale (typical), with a maximum deviation of ±1% at +25°C (+77°F).
Outputs:
- Recorder Outputs: Programmable for +4 to +20 mA, 0 to -10 Vdc, or +1 to +5 Vdc.
- Accuracy (at +25°C):
  - +4 to +20 mA: ±0.7% of signal, ±0.09 mA offset.
  - +1 to +5 Vdc: ±1.1% of signal, ±10 mV offset.
  - 0 to -10 Vdc: ±1.1% of signal, ±15 mV offset.

Output Details

Recorder Output Impedance

Voltage Outputs: 100 Ω. Minimum load resistance is 10 kΩ.
Current Compliance: 0 to +12 Vdc range across load, with a resistance of 0 to 600 Ω when using the +4 to +20 mA option.

Buffered Transducer Outputs

One coaxial connector per channel on the front panel and one terminal connection per channel on the rear panel. All outputs are short-circuit protected.
Transducer Supply Voltage: User-programmable for -24 Vdc or -18 Vdc, with current limiting on each individual circuit board.

Alarm and Display Features

Alarm Setpoints

Both Alert and Danger alarms are bi-directional (normal and counter).
These alarms are digitally adjustable from 0 to 100% of full-scale and can be set within LCD resolution (±1.6%). Once set, alarms remain repeatable within ±0.39% of full-scale.

Meter Display

LCD Type: Non-multiplexing vertical bargraph with 63 segments per channel.
Probe Gap: Displayed on a third, center scale.
Resolution: ±1.6% of monitor full-scale.
Display Size: 83 mm (3.25 inches), vertical dimension.

LED Indicators

OK LED: A constant green LED indicates that the monitor, transducers, and field wiring are in good condition.
Alarm LEDs: Two red LEDs per channel indicate alarm status (for both Alert and Danger), with flashing LEDs for First Out.
Bypass LEDs: Indicate the status of Danger Bypass and Rack/Channel Bypass functions.

Environmental Specifications

Operating Temperature: 0°C to +65°C (+32°F to +150°F).
Storage Temperature: -40°C to +85°C (-40°F to +185°F).
Relative Humidity: Up to 95%, non-condensing.
CE Mark Directives:
- EMC Directive: Certificate of Conformity: 158710.
- Low Voltage Directive: Certificate of Conformity: 135300.

Physical Specifications

Space Requirements: The monitor occupies one rack position, excluding positions 1 and 2, which are reserved for the Power Supply and System Monitor.
Weight: 1 kg (2.2 lbs.).

Ordering Information

Manufacturer: Bently Nevada
Product No.: 3300/20-12-01-02-01-02
Product Type: Dual Thrust Position Monitor
Part Number: 3300/20-AXX-BXX-CXX-DXX-EXX

Option Descriptions

Full-scale Range Option:
- 12 = 1.0-0-1.0 mm
Transducer Input Option:
- 01 = 3300 or 7200 Proximitor® systems, 200 mV/mil (for ranges 01, 02, 03, 11, and 12 only)
Alarm Relay Option:
- 02 = Hermetically-sealed
Agency Approval Option:
- 01 = CSA/NRTL/C
Safety Barrier Option:
- 02 = Internal

Contact Us

Phone: +86-15915488782
Email: [email protected]
WhatsApp: +8615915488782
Business Hours: 24/7 service
Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

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