Bently Nevada 21000-16-05-15-093-03-02 – Dual-Channel Vibration Monitor | 3500 Series Platform
Engineering Background
The Bently Nevada 21000 Series represents the industry benchmark for continuous machinery protection in rotating equipment applications. Engineered under Baker Hughes’ Bently Nevada division, this monitor integrates seamlessly into the 3500 Series rack-based protection system — the de facto standard for turbomachinery monitoring in oil & gas, power generation, and petrochemical industries worldwide.
Product Positioning
The 21000-16-05-15-093-03-02 is a dual-channel vibration monitor configured for radial shaft vibration measurement. It is designed for permanent installation in critical machinery protection loops where API 670 compliance, deterministic response time, and SIL-rated safety integrity are non-negotiable requirements. This module is the preferred choice for procurement engineers specifying protection systems for compressors, steam turbines, gas turbines, and pumps.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 21000-16-05-15-093-03-02 |
| Series / Platform | Bently Nevada 3500 / 21000 Series |
| Monitor Type | Dual-Channel Radial Vibration Monitor |
| Measurement Parameter | Shaft Radial Vibration (Displacement) |
| Input Channels | 2 (Channel A & Channel B) |
| Transducer Compatibility | Bently Nevada 3300 XL / 7200 Series Proximitors |
| Input Signal Range | -18 VDC to -24 VDC (Proximitor bias) |
| Full-Scale Range | Configurable: 5 mil, 10 mil, 20 mil, 40 mil, 80 mil pp |
| Frequency Response | DC to 10 kHz (–3 dB) |
| Alert / Danger Setpoints | Independently configurable per channel |
| Relay Outputs | Alert and Danger relay per channel (SPDT) |
| OK Relay | 1 per channel (de-energized on fault) |
| Buffered Output | 1 BNC per channel (–24 VDC bias, 1:1) |
| Communication | 3500 Rack Backplane (System 1 / TDI compatible) |
| Power Supply | Via 3500 Rack (18–30 VDC) |
| Operating Temperature | 0°C to +65°C |
| Storage Temperature | –40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Approvals / Standards | API 670, CE, CSA, FM, ATEX (rack-level) |
| Form Factor | Single-slot 3500 rack module |
| Weight | 1,440 g (approx.) |
| Country of Origin | USA |
Proven Application Environments
- Oil & Gas: Centrifugal compressors, gas turbine-driven trains, pipeline booster stations
- Power Generation: Steam turbine-generator sets, combined-cycle plant auxiliaries
- Petrochemical / Refining: Reactor charge pumps, cracked gas compressors, expander-compressor trains
- LNG / FPSO: Main refrigerant compressors, boil-off gas handling systems
- Offshore Platforms: Safety-critical rotating equipment requiring API 670 compliance
- Industrial Manufacturing: High-speed blowers, process compressors, critical pump trains
Engineering Advantages
- API 670 Compliant: Meets the international standard for machinery protection systems — accepted by EPC contractors and end-user specifications globally.
- Deterministic Trip Response: Hardware-based relay logic ensures <1 ms trip response, independent of software or network latency.
- Dual-Channel Architecture: Simultaneous monitoring of two measurement planes with independent alert/danger setpoints and relay outputs.
- Buffered Transducer Output: BNC outputs allow real-time signal analysis via portable analyzers without interrupting protection loop integrity.
- System 1 Integration: Native backplane communication enables seamless data acquisition into Bently Nevada System 1 condition monitoring software.
- Hot-Swap Capable: Module replacement without rack power-down (with appropriate bypass procedures), minimizing plant downtime.
- Long Service Life: Designed for >20-year operational life in continuous-duty industrial environments.
System Architecture & Signal Flow
The 21000-16-05-15-093-03-02 operates within the 3500 rack ecosystem as follows:
- Transducer Input: Proximitor sensor (3300 XL / 7200 Series) measures shaft gap voltage proportional to radial displacement.
- Signal Conditioning: Module conditions the –18 to –24 VDC Proximitor output, applies gap voltage verification, and converts to engineering units (mil pp or µm pp).
- Setpoint Comparison: Processed value is continuously compared against user-configured Alert and Danger thresholds.
- Relay Actuation: On threshold breach, dedicated SPDT relays actuate within hardware response time — no software intervention required.
- Backplane Communication: Digitized channel data is transmitted via 3500 rack backplane to the Communication Gateway Module (CGM) for System 1 / DCS integration.
- Buffered Output: Raw transducer signal is simultaneously available at BNC connector for portable data collector or spectrum analyzer connection.
Sourcing & Quality Verification
- Source: Surplus / decommissioned from operating plants or authorized distributor stock — all units are original Bently Nevada manufacture.
- Inspection: Each unit undergoes visual inspection, connector integrity check, and functional power-on verification prior to shipment.
- Traceability: Serial number and firmware revision documented. Calibration records available upon request where applicable.
- Packaging: Anti-static bag + foam-lined carton. ESD-safe handling throughout.
- Warranty: 90-day operational warranty against DOA / functional defects. Extended warranty available — contact sales.
Procurement Process
- Confirm Compatibility: Verify your 3500 rack configuration, Proximitor model, and required measurement range before ordering.
- Request Quote: Contact support@konmask.com or WhatsApp +0086 19859288691 for volume pricing, lead time, and availability confirmation.
- Purchase Order: Submit PO with full part number 21000-16-05-15-093-03-02. Pro-forma invoice issued within 1 business day.
- Payment: T/T (wire transfer), PayPal, or credit card accepted. LC available for orders >USD 10,000.
- Shipping: DHL / FedEx Express worldwide. Export documentation (commercial invoice, packing list, COO) included. HS Code: 9031.80.
- After-Sales: Technical support available for installation, configuration, and commissioning queries.
Technical FAQ
Q: Is this module compatible with the 3500/42M position monitor rack slot?
A: No. The 21000 Series occupies a standard vibration monitor slot. Verify your rack I/O module map before installation.
Q: Can this monitor accept velocity transducer inputs?
A: No. This configuration is optimized for eddy-current proximity (displacement) transducers. For velocity inputs, specify the appropriate 3500/42 velocity variant.
Q: What firmware version is installed?
A: Firmware version is documented per unit serial number. Contact us with your serial number for confirmation prior to purchase.
Q: Is recalibration required after installation?
A: Setpoint configuration is required via Rack Configuration Software (RCS). Physical calibration of the module itself is factory-set and does not require field recalibration under normal conditions.
Q: Do you provide a Certificate of Conformance (CoC)?
A: Yes, available upon request. Material Test Reports (MTR) and original factory documentation provided where available.
Q: What is the minimum order quantity?
A: Single unit orders accepted. Volume discounts apply for 3+ units.
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Contact: support@konmask.com | +0086 19859288691
