Product Core Brief
- Model: 190501‑12‑00‑CN
- Brand: BENTLY Nevada (Baker Hughes)
- Series: 190501 Velomitor CT Transducer Family
- Order Suffix Breakdown
- 12 = Thread: 3/8‑24 UNF mounting thread
- 00 = Connector: MIL‑C‑5015 2‑pin circular connector
- CN = Regional variant: China‑market compliance package, local documentation set
- Core Function: Low‑frequency integrated piezoelectric velocity transducer built for low‑speed rotating equipment such as cooling‑tower fans. Converts casing vibration into proportional velocity output for machinery protection and condition‑monitoring systemsBaker Hugh….
- Product Type: Velomitor CT (Cooling‑Tower) Velocity Transducer
- Key Specs: 100 mV/in/s (3.94 mV/mm/s) nominal sensitivity; 3.0 Hz‑900 Hz usable bandwidth; MIL‑C‑5015 connector; stainless‑steel housing; hazardous‑area certified; maximum cable run 305 m (1000 ft)Baker Hugh…. ⚠️ Active production; replacement cross‑reference available for end‑of‑life revisions.
Product Introduction
BENTLY 190501‑12‑00‑CN is a self‑contained piezoelectric velocity transducer. Internal circuitry integrates raw accelerometer signal to produce true velocity output, eliminating external signal‑conditioning hardware for velocity measurement. It is purpose‑optimized for slow‑speed fans operating down to 90 RPM, where standard velocity sensors roll‑off amplitude at low frequenciesBaker Hugh….
This unit uses 3/8‑24 UNF mounting thread and MIL‑C‑5015 two‑pin circular connector. The CN suffix denotes China‑specific compliance paperwork and documentation; electrical and mechanical performance matches base 190501‑12‑00 hardware. It interfaces directly with Bently 1900‑series, FieldMonitor 1701, or 3500 monitor channels designed for seismic transducers —though your mileage may vary if paired with monitor inputs configured exclusively for proximity probes.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Nominal Sensitivity | 100 mV/in/s (3.94 mV/mm/s), tolerance ±5 %Baker Hugh… |
| Frequency Response | 3.0 Hz‑900 Hz ±1 dB; extended 1.5 Hz‑1000 Hz ±3 dBBaker Hugh… |
| Mounting Thread | 3/8‑24 UNF‑2A |
| Connector Type | MIL‑C‑5015 2‑pin circular (00 option) |
| Housing Material | 316 stainless steel |
| Hazardous‑Area Rating | ATEX / IECEx; China regional approvals for CN variant |
| Recommended Torque | 13.6 N·m (120 in‑lb) maximum mounting torque |
| Max Cable Length | 305 m (1000 ft) total transducer cable lengthBaker Hugh… |
| Operating Temperature | ‑40 °C to +85 °C |
| Storage Temperature | ‑40 °C to +104 °C |
| Relative Humidity | 5‑95 %, non‑condensing |
| Physical Weight | 0.297 kg |
| Country of Origin | United States |
BENTLY 190501-12-00-CN
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Source traceability, serial number cross‑check, visual inspection for dents, thread damage, connector pin deformation. Confirm full part number 190501‑12‑00‑CN including CN regional suffix.
- Live Functional Test: Bench calibration with reference shaker table; verify sensitivity and frequency response at key test points; insulation resistance check between signal shell and internal circuits. Document output amplitude against known vibration reference levels.
- Environmental Check: Insulation resistance (500 V Megger, >10 MΩ). Reject units showing low isolation across connector pins.
- Documentation Review: Confirm CN‑compliant regional documentation package is present. Record serial number against calibration records. Well, technically it requires monitor input set to seismic‑velocity mode; wrong channel configuration produces invalid readings, no hardware fault indicated.
- Final QC & Packaging: Anti‑static packaging; include thread anti‑seize note, mounting‑torque warning, and matching connector mating accessories.
Replacement Pitfall Guide
❗ Monitor Channel Configuration Risk: This is a velocity‑seismic transducer. Do not connect to proximity‑probe inputs. Mis‑configuration yields incorrect readings without triggering hardware‑fault flags.❗ Mounting Torque Limit: Do not exceed 13.6 N·m installation torque. Over‑torque will distort internal piezoelectric element and permanently shift sensitivity.❗ Connector Handling: MIL‑C‑5015 pins are fragile. Avoid dirt or moisture ingress at connector; seal unused mating connectors with protective cap.❗ Cable Length Constraints: Keep total cable length within 305 m maximum. Exceeding this limit degrades low‑frequency signal performance.❗ ESD Damage: Use anti‑static wrist strap when handling open‑connector assemblies. Static discharge can degrade piezoelectric element performance with no visible physical damage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
- Response latency: Analog continuous output, no internal digital scan delay
- Signal interface: Analog seismic velocity output, no digital bus.
