990-04-50-01-00 Bently Nevada Transmitter

Bently Nevada 990 Vibration Transmitter | 990-04-50-01-00

Bently Nevada 990 Vibration Transmitter | 990-04-50-01-00

Availability: 10 left in stock

Configured for proximity probe signal conditioning and 4-20 mA current loop conversion in machinery protection networks, the Bently Nevada 990-04-50-01-00...

SKU: 990-04-50-01-00

Manufacturer: Bently Nevada
Product No.: 990-04-50-01-00
Product Type: Vibration Transmitters
Product Origin: USA
Payment:T/T, Western Union
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Configured for proximity probe signal conditioning and 4-20 mA current loop conversion in machinery protection networks, the Bently Nevada 990-04-50-01-00 (990 Vibration Transmitter) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Option Code	Option Description	Technical Definition
990	Base Model	2-Wire Vibration Transmitter
-04	Full-scale Option	0-4 mils pp (0-100 um pp) displacement amplitude range
-50	System Length Option	5.0 metres (16.4 feet) total calibrated system length
-01	Mounting Option	35 mm DIN rail clips pre-installed
-00	Agency Approval Option	No hazardous area agency approvals required

Hardware Specifications

Parameter	Specification
Model	990-04-50-01-00
Brand	Bently Nevada
Origin	USA
Product Type	Vibration Transmitters
Input Device	Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable
Full-Scale Range	0-4 mils pp (0-100 um pp)
System Length	5.0 metres (16.4 feet)
Output Signal	Proportional 4-20 mA loop current
Maximum Loop Resistance	1000 ohm including cable at 35 VDC
Current Limiting	23 mA typical
Power Supply	+12 to +35 VDC input at the transmitter terminal
Mounting	35 mm DIN rail clips
Operating Temp	Standard 990 transmitter rating
Weight	2 kg (Shipping Weight)
Power Consumption	Loop-powered via +12 to +35 VDC supply line

Gap Voltage Validation (-10 VDC Targets) & Cross-Talk Suppression

The module conditions raw eddy-current signal inputs generated by a 3300 NSv proximity probe across a tuned 5.0-metre system length. Installation protocol mandates gap voltage validation at the raw signal monitoring terminals to ensure a static baseline target of -10 VDC at mid-span. Internal filtering and shielded termination maintain cross-talk suppression and signal integrity when multiple transmitters are mounted adjacent to one another along shared cabinet DIN rails.

Frequently Asked Questions

Q: What is the maximum permissible loop impedance for this transmitter at maximum voltage?

A: At an operating voltage of 35 VDC, the total loop resistance limit is 1000 ohm, including all interconnecting field cabling resistance.

Q: How does the internal circuit handle over-range loop conditions?

A: The transmitter incorporates an internal current limiting circuit set to a typical threshold of 23 mA to protect downstream loop monitoring cards during over-range vibration events.

Q: What power input range must be supplied to the field connection terminals?

A: The module requires an external power supply delivering between +12 VDC and +35 VDC directly across the transmitter terminals to drive the 4-20 mA measurement loop.

Field Installation Guidelines

Mount the transmitter module directly onto a grounded 35 mm DIN rail, verifying mechanical lock engagement.
Connect the 3300 NSv proximity probe extension cable coaxial connector to the transmitter input interface, securing hand-tight.
Validate static DC gap voltage using a multimeter connected to the test terminals, adjusting probe insertion depth to achieve -10 VDC.
Connect 2-wire shielded cable from the control system 24 VDC analog input terminals to the transmitter power/output connections.
Terminate the field cable shield to the cabinet earth bus bar at a single point to mitigate ground loops and electromagnetic 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.