Bently Nevada 990-05-50-03-05 990 Vibration Transmitter

Availability: 10 left in stock

The Bently Nevada 990-05-50-03-05, also cataloged as the 990 Vibration Transmitter, operates as a dedicated hardware component for proximity probe...

SKU: 990-05-50-03-05

Manufacturer: Bently Nevada
Product No.: 990-05-50-03-05
Product Type: Vibration Transmitters
Product Origin: USA
Payment:T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Bently Nevada 990-05-50-03-05, also cataloged as the 990 Vibration Transmitter, operates as a dedicated hardware component for proximity probe signal conditioning and 4-20 mA current loop conversion within machinery protection networks.

Suffix Breakdown & Model Matrix

Option Code	Option Description	Technical Definition
990	Base Model	2-Wire Vibration Transmitter
-05	Full-scale Option	0-5 mils pp (0-125 um pp) relative vibration amplitude range
-50	System Length Option	5.0 meters (16.4 feet) total system length matching probe and cable
-03	Mounting Option	DIN clips and screws integrated for mounting flexibility
-05	Agency Approval Option	CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approvals

Hardware Specifications

Parameter	Specification
Model	990-05-50-03-05
Brand	Bently Nevada
Origin	USA
Product Type	Vibration Transmitters
Input Device	Accepts input from 3300 NSv non-contacting proximity probe and extension cable
Signal Output	4-20 mA DC proportional to relative vibration amplitude
Full-Scale Range	0-5 mils pp (0-125 um pp)
System Length	5.0 meters (16.4 feet)
Mounting Interface	DIN rail clips and surface mounting screws
Environmental Rating	Potted construction for high humidity environments (up to 100% condensing)
Agency Approvals	CSA Division 2, ATEX Zone 0, ATEX Zone 2, ABS maritime
Operating Temp	Standard 990 field transmitter temperature rating
Power Consumption	Loop-powered via output 4-20 mA loop circuit

Gap Voltage Validation (-10 VDC Targets) & Eddy-Current Probe Scaling

The transmitter interfaces directly with a 3300 NSv proximity probe to condition high-frequency eddy-current signals across a calibrated 5.0-meter path. Correct installation requires gap voltage validation via the non-isolated PROX OUT and COM terminals, ensuring a static bias voltage target of -10 VDC at the physical center of the probe linear range. Precise eddy-current probe scaling converts dynamic gap variations caused by shaft motion into an accurate 4-20 mA output signal without loss of amplitude accuracy or phase alignment.

Frequently Asked Questions

Q: How is signal verification performed on this transmitter without disconnecting field wiring?

A: The module incorporates a dedicated test input pin alongside non-isolated PROX OUT and COM terminals, allowing technicians to verify loop current output and monitor raw gap voltage using standard test equipment.

Q: Can this unit withstand high-humidity field environments?

A: Yes, the unit features fully potted internal construction designed to withstand extreme moisture conditions up to 100% condensing humidity.

Q: Is an external Proximitor Sensor required to operate the 3300 NSv probe with this transmitter?

A: No, the transmitter contains an integrated Proximitor Sensor circuit within its potted enclosure, processing raw probe signals directly without secondary external signal conditioners.

Field Installation Guidelines

Mount the transmitter module onto a 35 mm DIN rail using the integrated clips, or secure it directly to a backplate using the mounting screws.
Thread the 3300 NSv proximity probe extension cable onto the coaxial input jack on the transmitter, tightening hand-tight to secure the connection.
Connect a multimeter to the non-isolated PROX OUT and COM terminals, adjusting mechanical probe depth until a static gap voltage of -10 VDC is established.
Route two-wire shielded cable from the 4-20 mA output terminals to the control system analog input channel.
Ground the cable drain wire at a single point on the cabinet grounding bus bar to prevent ground loops and protect against electrical interference.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.