Manufacturer: Bently Nevada
Product No.: 990-05-50-01-00
Country of origin:United States
Product Type: Vibration Transmitter
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 820g
Dimensions: 53.3 mm x 73.9 mm x 100.1 mm
Shipping port: Xiamen
Warranty: 12 months
Designed for direct integration into rotating equipment control systems, the 990 2-Wire Vibration Transmitter converts shaft vibration measurements into a standard 4 to 20 mA output signal for PLC, DCS, and machinery protection applications. The transmitter operates with a matching 3300 NSv proximity probe and extension cable assembly to monitor peak-to-peak vibration levels on compressors, motors, pumps, and industrial fans.
The Bently Nevada transmitter combines signal conditioning electronics and the Proximitor sensor into a single compact housing, reducing external hardware requirements and simplifying installation inside OEM equipment packages. Its potted construction supports operation in high-humidity environments, while the integrated PROX OUT connection allows access to dynamic vibration signals for troubleshooting and machinery diagnostics.
The 990-05-50-01-00 configuration includes a 5.0 metre system length, 35 mm DIN rail mounting clips, and standard non-hazardous area approval configuration.
| Item | Configuration |
|---|---|
| Model | 990 - Vibration Transmitter |
| Product Type | 2-Wire Vibration Transmitter |
| Full-scale Option | 05 = 0-5 mils pp (0-125 um pp) |
| System Length Option | 50 = 5.0 metres (16.4 feet) |
| Mounting Option | 01 = 35 mm DIN rail clips |
| Agency Approval Option | 00 = Not required |
| Parameter | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 990-05-50-01-00 |
| Product Category | Vibration Transmitter |
| Country of Manufacture | U.S.A |
| Input Signal | 3300 NSv proximity probe |
| Extension Cable Support | 5 m and 7 m systems |
| Supply Voltage | +12 to +35 Vdc |
| Output Signal | 4 to 20 mAdc |
| Wiring Configuration | 2-wire |
| Full Scale Accuracy | +/-1.5% |
| Maximum Loop Resistance | 1000 Ohm |
| Current Limit | 23 mA typical |
| Probe Gap Range | 0.5 to 1.75 mm |
| Output Impedance | 10 kOhm |
| Prox Out Linear Range | 1.4 mm |
| Incremental Scale Factor | 7.87 mV/um (200 mV/mil) |
| Frequency Range | 5 Hz to 6000 Hz |
| Typical Noise Level | 50 mV/pp |
| Minimum Target Diameter | 9.5 mm |
| Diagnostic Cable Length | 3 m maximum |
| Operating Temperature | -35 degC to +85 degC |
| Storage Temperature | -52 degC to +100 degC |
| Probe Operating Temperature | -52 degC to +177 degC |
| Relative Humidity | 100% condensing |
| Probe Tip Material | Polyphenylene sulfide |
| Probe Housing Material | AISI 303 or 304 stainless steel |
| Probe Cable Type | 75 Ohm coaxial FEP insulated |
| Optional Armor Material | AISI 302 stainless steel |
| Tensile Strength | 222 N |
| Dimensions | 53.3 mm x 73.9 mm x 100.1 mm |
| Body Height | 42.6 mm |
| Mounting Hole Distance | 63.5 mm x 69.9 mm |
| Mounting Hole Diameter | 5.8 mm |
| Net Weight | 0.43 kg |
| Total System Weight | 0.82 kg |
| Interface | Function |
|---|---|
| PROX OUT Connector | Dynamic vibration output |
| COM Terminal | Signal common |
| TEST Pin | Loop verification input |
| Power Terminal | DC supply input |
| 4-20 mA Loop | Control system signal output |
What signal does the transmitter output?
The device provides a proportional 4 to 20 mA vibration signal.
Which probe family is supported?
The transmitter is designed for use with 3300 NSv proximity probes.
Can the unit be mounted on DIN rail?
Yes. This configuration includes 35 mm DIN rail clips.
Is an external proximitor required?
No. The Proximitor sensor electronics are integrated into the housing.
What machinery types commonly use this transmitter?
Compressors, pumps, motors, and industrial fans commonly use this device.
Does the transmitter support hazardous locations?
This specific configuration does not include hazardous area approvals.
What is the maximum operating frequency?
The frequency response extends to 6000 Hz.
How is vibration data transmitted to the control system?
The signal is transmitted through a two-wire 4 to 20 mA loop.
Can the PROX OUT connection be used for diagnostics?
Yes. It provides access to dynamic vibration signals for analysis.
What happens during a probe fault condition?
The output falls below 3.6 mA to indicate a NOT OK condition.
What is the recommended maximum diagnostic cable length?
The recommended maximum length is 3 meters.
Can the transmitter operate in humid environments?
Yes. The potted construction supports 100% condensing humidity conditions.
What supply voltage is required?
The transmitter requires +12 to +35 Vdc input power.
Does the device support waveform diagnostics through the 4-20 mA output?
No. The analog output is intended for overall vibration trending only.
Is a Certificate of Origin available?
Yes. Certificate of Origin documentation can be provided on request.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & 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 .
| Color pattern |
Greyish White
|
| Country of origin |
United States
|
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