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Manufacturer:Bently Nevada
Product Number:990-04-50-02-00
Product Type:Vibration Transmitter
Origin:USA
Dimensions:100.1 x 73.9 x 53.3mm
Weight:0.43kg
Views:36
Payment Methods:T/T, PayPal, Western Union
Condition:New & In Stock
Warranty:1 Year
Lead Time:1-3 Working Days
Certificate:COO
Courier partners:DHL, UPS, TNT, FedEx and EMS.
Business hours:7*24
The Bently Nevada 990-04-50-02-00 is a compact vibration transmitter designed primarily for OEMs of centrifugal compressors, pumps, motors, and fans. It provides a 4–20 mA output proportional to shaft vibration, enabling integration into standard control systems without requiring external monitoring equipment.
Centrifugal air compressors
Small motors and pumps
Fans and blowers
Machinery with limited mounting space
OEM equipment requiring simplified vibration inputs
Integrated Proximitor Sensor eliminates external processing units
Dual mounting options: DIN rail or bulkhead
Rugged, potted construction for high-humidity environments
Quick signal testing with built-in test input
“Not OK” circuit prevents false alarms from sensor faults
Compatible with 3300 NSv proximity probes
Dynamic signal output available for diagnostics
| Parameter | Description |
|---|---|
| Input | 3300 NSv proximity probe with 5m cable |
| Output | 4–20 mA current loop (2-wire) |
| Frequency Range | 5 Hz to 6,000 Hz |
| Accuracy | ±1.5% full scale |
| Power Supply | +12 to +35 Vdc |
| Max Loop Resistance | 1000 Ω at 35 Vdc |
| Probe Gap Range | 0.5 mm to 1.75 mm |
| Prox Out Scale Factor | 7.87 mV/μm ±6.5% typical |
| Operating Temp (Transmitter) | -35°C to +85°C |
| Storage Temp (Transmitter) | -52°C to +100°C |
| Humidity | 100% condensing |
| Dimensions (L x W x H) | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Certifications | ATEX, CSA Div 2, ABS, RoHS, FCC, EMC |
Q1: What type of sensor is compatible with the 990 transmitter?
A: The 990 transmitter is designed to work with the Bently Nevada 3300 NSv proximity probe system.
Q2: Can the transmitter be mounted on a DIN rail?
A: Yes, it supports DIN rail or bulkhead mounting.
Q3: Does it provide diagnostic signal output?
A: Yes, a non-isolated PROX OUT BNC is provided for diagnostics.
Q4: Is the output isolated?
A: The PROX OUT signal is not isolated; use the 122115-01 Test Adapter for safe diagnostics.
Q5: What is the primary use case?
A: OEMs use it for simple vibration monitoring in compressors, pumps, and motors.
Q6: What environmental conditions can it handle?
A: It supports up to 100% condensing humidity and operates from -35°C to +85°C.
Q7: What happens during a probe fault?
A: The signal drops below 3.6 mA to indicate a “Not OK” condition.
Q8: Can it be used for phase analysis?
A: No, it provides only vibration amplitude—not phase information.
Q9: How do you test the 4–20 mA loop?
A: A test input pin is available for signal verification using a function generator.
Q10: What kind of approval does it have for hazardous areas?
A: It holds ATEX Zone 0/2 and CSA Div 2 hazardous location approvals.
Manufacturer:Bently Nevada
Product Number:990-04-50-02-00
Product Type:Vibration Transmitter
Origin:USA
Dimensions:100.1 x 73.9 x 53.3mm
Weight:0.43kg
Views:36
Payment Methods:T/T, PayPal, Western Union
Condition:New & In Stock
Warranty:1 Year
Lead Time:1-3 Working Days
Certificate:COO
Courier partners:DHL, UPS, TNT, FedEx and EMS.
Business hours:7*24
The Bently Nevada 990-04-50-02-00 is a compact vibration transmitter designed primarily for OEMs of centrifugal compressors, pumps, motors, and fans. It provides a 4–20 mA output proportional to shaft vibration, enabling integration into standard control systems without requiring external monitoring equipment.
Centrifugal air compressors
Small motors and pumps
Fans and blowers
Machinery with limited mounting space
OEM equipment requiring simplified vibration inputs
Integrated Proximitor Sensor eliminates external processing units
Dual mounting options: DIN rail or bulkhead
Rugged, potted construction for high-humidity environments
Quick signal testing with built-in test input
“Not OK” circuit prevents false alarms from sensor faults
Compatible with 3300 NSv proximity probes
Dynamic signal output available for diagnostics
| Parameter | Description |
|---|---|
| Input | 3300 NSv proximity probe with 5m cable |
| Output | 4–20 mA current loop (2-wire) |
| Frequency Range | 5 Hz to 6,000 Hz |
| Accuracy | ±1.5% full scale |
| Power Supply | +12 to +35 Vdc |
| Max Loop Resistance | 1000 Ω at 35 Vdc |
| Probe Gap Range | 0.5 mm to 1.75 mm |
| Prox Out Scale Factor | 7.87 mV/μm ±6.5% typical |
| Operating Temp (Transmitter) | -35°C to +85°C |
| Storage Temp (Transmitter) | -52°C to +100°C |
| Humidity | 100% condensing |
| Dimensions (L x W x H) | 100.1 x 73.9 x 53.3 mm |
| Weight | 0.43 kg |
| Certifications | ATEX, CSA Div 2, ABS, RoHS, FCC, EMC |
Q1: What type of sensor is compatible with the 990 transmitter?
A: The 990 transmitter is designed to work with the Bently Nevada 3300 NSv proximity probe system.
Q2: Can the transmitter be mounted on a DIN rail?
A: Yes, it supports DIN rail or bulkhead mounting.
Q3: Does it provide diagnostic signal output?
A: Yes, a non-isolated PROX OUT BNC is provided for diagnostics.
Q4: Is the output isolated?
A: The PROX OUT signal is not isolated; use the 122115-01 Test Adapter for safe diagnostics.
Q5: What is the primary use case?
A: OEMs use it for simple vibration monitoring in compressors, pumps, and motors.
Q6: What environmental conditions can it handle?
A: It supports up to 100% condensing humidity and operates from -35°C to +85°C.
Q7: What happens during a probe fault?
A: The signal drops below 3.6 mA to indicate a “Not OK” condition.
Q8: Can it be used for phase analysis?
A: No, it provides only vibration amplitude—not phase information.
Q9: How do you test the 4–20 mA loop?
A: A test input pin is available for signal verification using a function generator.
Q10: What kind of approval does it have for hazardous areas?
A: It holds ATEX Zone 0/2 and CSA Div 2 hazardous location approvals.
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