Bently Nevada 990-10-XX-01-00 283278-01 Vibration Transmitter

Only 2 item(s) left in stock

Manufacturer: Bently Nevada
Product No.: 990-10-XX-01-00 283278-01
Country of origin:United States
Product Type: 2-Wire Vibration Transmitter
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 430g
Dimensions: 7.4cm x 5.5cm x 9.8cm
Shipping port: Xiamen
Warranty: 12 months

View full details

Description

The 990-10-XX-01-00 (Internal SKU/Part Number: 283278-01) is an industrial, loop-powered 990 Vibration Transmitter engineered by Bently Nevada (a Baker Hughes business). This specialized device provides continuous machinery condition monitoring and asset protection by interfacing field transducers directly with plant automation systems. It integrates the high-frequency signal conditioning electronics of a proximity sensor and an analog transmitter into a single, compact polycarbonate housing. The unit accepts inputs from a non-contacting 3300 XL 8mm eddy-current proximity probe and extension cable system, converting raw shaft micro-gap variations into a linear, proportional 4 to 20 mA analog current loop output. This configuration enables plant operators to route critical radial vibration data straight to Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC) without the added infrastructure of a separate, rack-based monitor chassis.

This exact hardware configuration features an expanded factory-calibrated full-scale measurement scale of 0-10 mils pp (0-250 um pp), designed for machines with larger expected rotor vibration amplitudes. The unit is equipped with integrated 35 mm DIN rail clips for rapid, toolless snap-on installation into local marshalling junction boxes. The agency option is designated as -00, which represents the standard, non-hazardous area base model for general-purpose plant zones. The internal tracking number 283278-01 represents the modern OEM manufacturing assembly designation, incorporating high-stability surface-mount components and enhanced RFI/EMI noise suppression filters over legacy iterations while maintaining identical physical and electrical drop-in backward compatibility.

Features

Two-wire, loop-powered configuration that routes a proportional 4 to 20 mA analog signal directly to host DCS or PLC automation cards.
Expanded 0-10 mils peak-to-peak (0-250 um peak-to-peak) linear scale calibration for high-amplitude shaft displacement logging.
Integrated heavy-duty 35 mm DIN rail clips for secure, vibration-resistant installation on standard terminal enclosure tracks.
Standard-area application footprint (-00 option) engineered for reliable cost-effective deployment in non-classified plant zones.
Modern 283278-01 component build featuring enhanced noise immunity and thermal stability in harsh processing environments.
Front-mounted, isolated BNC dynamic terminal providing raw, unconditioned voltage waveforms for local diagnostic data collectors.
Non-interacting zero and span adjustment pots allowing seamless, independent calibration verification under field conditions.

Applications

Continuous radial shaft vibration monitoring on fluid-filmed bearings of industrial turbo-fans, exhausters, and blowers.
Standalone asset protection loop integration for large electric motors, industrial gearboxes, and high-capacity centrifugal pumps.
Distributed machinery condition monitoring inside factory utility rooms, water handling skids, and HVAC cooling towers.

Option String Breakdown

Option Code Slot	Selected Option Value	Technical Detail
Model Number	990	990 Vibration Transmitter Product Family
A: Full-scale Option	-10	0-10 mils peak-to-peak (0-250 um peak-to-peak) measurement scale
B: System Length Option	-XX	Configurable system loop length (Matches probe/cable design parameters)
C: Mounting Option	-01	35 mm DIN rail clips factory-installed
D: Agency Approval	-00	None (Standard safety area classification for non-hazardous zones)
Internal Assembly Part ID	283278-01	Modern factory production assembly code

Technical Specifications

Parameter	Detail
Manufacturer	Bently Nevada (Baker Hughes)
Ordering Code	990-10-XX-01-00
OEM Assembly Part ID	283278-01
Product Type	Two-Wire Proximity Vibration Transmitter
Full Scale Linear Calibration	0 to 10 mils pp (0 to 250 um pp) peak-to-peak displacement
Output Loop Signaling	Proportional 4 to 20 mAdc current loop
Buffered Output Scale Factor	Nominal 7.87 V/mm (200 mV/mil) corresponding to raw probe gap voltage
Buffered Output Impedance	10 kohm nominal (Protected against continuous short circuit faults)
Supply Voltage Range	+12 Vdc to +35 Vdc loop power required at the terminal links
Transducer Core Matching	Calibrated for standard 3300 XL 8mm proximity probe and extension cable loops
Field Wiring Block Capacity	Terminal strip accepting wire cross-sections up to 1.5 mm squares (16 to 24 AWG)
Enclosure Construction Material	Polycarbonate body structure integrated with an aluminum base plate
Net Component Weight	0.43 kg (0.9 lbm)
Operating Temperature Bounds	-35 degC to +85 degC
Storage Temperature Bounds	-51 degC to +100 degC
Relative Humidity Index	95% maximum, non-condensing atmosphere constraints

Connections/Interfaces

Interface Element	Function Assignment
PROBE Coaxial Port	Miniature coaxial connection point receiving the incoming transducer extension cable
+ (SIG) Terminal	Positive current loop connection receiving incoming +12 to +35 Vdc loop power inputs
- (COM) Terminal	Negative current loop connection returning the regulated 4 to 20 mA measurement signal
BUF BNC Port	Front-panel isolated BNC socket providing unconditioned sensor voltage waves

Installation Guidelines

DIN Rail Attachment: Position the transmitter housing directly over standard 35 mm DIN rail tracking. Apply firm downward pressure until the integrated plastic clips snap tightly over the rail flanges.
Chassis Frame Isolation: Ensure the internal ground planes remain isolated from bare electrical conduit paths. The transmitter backplate must remain isolated from structural rack frames to eliminate low-voltage ground loops.
System Length Verification: Verify that the system length option (Option -XX) perfectly matches the combined physical length of the connected 3300 XL 8mm probe and extension cable to maintain proper scaling.
Dynamic Signal Diagnostic Check: Use the front-facing coaxial BNC connector to patch into local signal analyzers. This buffered port provides a raw voltage wave (200 mV/mil) without altering the primary 4-20 mA control loop tracking.

Key Features:

#Vibration Transmitter

What is the relationship between the part number 283278-01 and the model number 990-10-XX-01-00?

The 283278-01 number is the official internal OEM manufacturing assembly part number for the 990-10-XX-01-00 transmitter configuration. It represents the active physical circuit board build utilizing modernized high-stability surface-mount components.

If a short circuit occurs on the raw coaxial cable running to the probe, how does the 4-20 mA current output react?

A short circuit in the transducer loop drops the inner impedance to zero, violating the calibrated linear gap limits. The internal diagnostic logic of the 283278-01 transmitter overrides the vibration tracking and forces the output current loop into a low fault state below 3.6 mA, triggering an immediate instrumentation alert in the DCS or PLC.

What is the maximum allowable cable length for the field wiring connected to the 4-20 mA loop side of the transmitter?

The maximum field wiring distance depends on wire resistance and the loop power supply voltage. At +24 Vdc, the maximum loop resistance is roughly 545 ohms. Using standard twisted-pair 18 AWG copper field wire (approx. 6.5 ohms per 1000 feet per wire), the loop can reliably span thousands of feet, provided the total resistance of the barriers, wiring, and DCS input card remains under the 545-ohm limit.

Why does this specific 990 transmitter model have non-interacting zero and span pots, and when should they be adjusted?

The zero and span pots allow field engineers to fine-tune the 4 mA (zero vibration) and 20 mA (full-scale vibration) loop outputs to account for unique field conditions, such as non-standard shaft metallurgy or extreme shaft curvature. Because these controls are non-interacting, adjusting the zero pot does not alter the span setting, allowing for quick and accurate field calibration without iterative tweaking.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	Greyish White
Country of origin	United States

Bently Nevada 990-10-XX-01-00 283278-01 Vibration Transmitter