Bently Nevada
1800/20-12-90-02-00 Bently Nevada Probe
In stock, ready to ship
Manufacturer: Bently Nevada
Product No.: 1800/20-12-90-02-00
Product Type: Probe
Product Origin: USA
Payment: T/T
Weight: 1300g
Shipping port: Xiamen
Warranty: 12 months
Yes, we provide a 30-day money-back guarantee for all purchases.
Yes, all items come with a 12-month warranty from the date of shipment.
Overview
Bently Nevada 1800/20 (PN: 1800/20-12-90-02-00) is a loop-powered axial thrust position transmitter. It integrates a Proximitor sensor and signal conditioner into a single unit, providing a 4–20 mA output for PLC/DCS systems.
Designed for use with a 3300 XL 8mm proximity probe, it monitors axial shaft displacement to detect potential thrust bearing issues before catastrophic failure. A buffered raw signal output enables field diagnostics and probe gap verification during installation.
Technical Data
| Feature | Specification |
|---|---|
| Part Number | 1800/20-12-90-02-00 |
| Operating Temperature | -40°C to +85°C |
Key Features
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Integrated Sensor Logic: All-in-one Proximitor and transmitter; reduces cabinet complexity.
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Proactive Protection: Monitors axial shaft displacement for early detection of thrust bearing wear.
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Simplified Diagnostics: Buffered output allows probe gap verification (-10 VDC) and raw signal analysis.
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Enhanced Signal Integrity: “Not OK” circuitry detects probe faults; potted construction protects electronics in harsh environments.
Typical Applications
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Centrifugal Compressors – monitor axial movement and clearances.
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Boiler Feed Pumps – track thrust in multi-stage pumps.
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Steam Turbines – protect auxiliary turbines without a 3500 rack.
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Gearboxes – manage axial displacement in high-speed shafts.
FAQ
Q1: Can I use a 5-meter extension cable with this 1800/20-12-90 model?
A1: No. The transmitter is calibrated for 9.0 meters. Using 5 meters will give incorrect readings.
Q2: Does the 1800/20 require a separate power supply?
A2: No. It is loop-powered via the same two wires used for the 4–20 mA output.
Q3: What happens if the proximity probe fails or is disconnected?
A3: The “Not OK/Signal Defeat” circuit reduces output below 3.6 mA, triggering a fault alarm instead of a false reading.
Q4: Can I use a 5mm probe with this transmitter?
A4: No. It is optimized for the 3300 XL 8mm proximity probe; 5mm probes will cause incorrect measurement.