Bently Nevada 991-50-XX-01-00 | Rugged Two-Wire Shaft Thrust Monitor
Manufacturer: Bently Nevada
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Part Number: 991-50-XX-01-00
Condition：New with Original Package
Product Type: Rugged Two-Wire Shaft Thrust Monitor
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Bently Nevada 991-50-XX-01-00 is a rugged, loop-powered two-wire thrust vibration transmitter designed to monitor rotating machinery such as pumps, fans, compressors, and turbines. It integrates a 3300 NSv proximity probe and signal-conditioning electronics into one compact housing, delivering accurate 4-20 mA DC vibration output for PLC, DCS, or alarm system integration.
This 3300 XL series transmitter offers interchangeable system lengths, indicated by “XX” in the part number, to simplify installation on various machinery layouts. It helps operators detect shaft displacement issues early and enables predictive maintenance to minimize downtime.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Bently Nevada |
| Model | 991-50-XX-01-00 |
| Series | 3300 XL |
| Function | Two-wire thrust vibration transmitter |
| Input Sensor | Accepts 3300 NSv proximity probe |
| System Length Options | XX = 50 (5.0 m), 70 (7.0 m), and other lengths as required |
| Output Signal | 4-20 mA DC (loop-powered) |
| Full-Scale Range | 0–5 mils pp (0–125 µm pp) |
| Accuracy | ±1.5 % of full-scale range |
| Power Supply | +12 to +35 V DC |
| Loop Resistance | Up to 1,000 Ω at 35 V DC |
| Operating Temperature | –35 °C to +85 °C |
| Environmental Protection | Potted construction for humidity and harsh industrial contaminants |
| Applications | Continuous thrust vibration monitoring in motors, pumps, fans, compressors |
FAQ
Q1: What does the “XX” in 991-50-XX-01-00 represent?
A1: “XX” specifies the system length, for example 50 = 5.0 m or 70 = 7.0 m, including probe and extension cable.
Q2: Which sensor type is supported by this transmitter?
A2: It works with a 3300 NSv non-contact proximity probe for thrust displacement measurement.
Q3: What output signal is provided by the transmitter?
A3: The device delivers a loop-powered 4-20 mA DC output proportional to shaft displacement.
Q4: Can it operate in outdoor or high-humidity industrial environments?
A4: Yes, it features potted construction that protects against moisture, dust, and contaminants.
Q5: What is the operating temperature range?
A5: The transmitter operates reliably from –35 °C to +85 °C, suitable for harsh conditions.