Product Summary: Precision Vibration Monitoring for Harsh Environments
The 9200-01-50-09-04 is a rugged two-wire velocity seismoprobe transducer from Bently Nevada. It delivers reliable, high-accuracy casing vibration measurements in extreme industrial settings. With ATEX/IECEx approval and isolated mounting, this model ensures safe operation in hazardous areas. Its 20 mV/mm/s sensitivity (±5%) provides precise velocity data for predictive maintenance. Choose this transducer for critical rotating machinery protection.
Product Procurement & Buyer Guide: Matching Specifications to Your Application
When selecting the correct transducer, you must align the mounting base and cable options with your on-site conditions. The 9200-01-50-09-04 features an isolated circular 5/8-18 UNF stud mount (Option 09). This design electrically isolates the transducer from the machine case, preventing ground loops. You will also receive a 50-foot (15.2-meter) integral cable (Option 50). This length suits typical industrial installations where the monitoring system is placed away from the machine.
The ATEX/IECEx approval (Option 04) allows deployment in Zone 0, 1, and 2 gas environments. For oil and gas or chemical plants, this certification is mandatory. The transducer operates from -29°C to +121°C, handling extreme process temperatures. Its dynamic displacement range reaches 2.54 mm peak to peak. The velocity range is 25 mm/s at 100 Hz with a 10 kΩ load. These parameters suit high-speed compressors and turbines.
Procurement managers must verify the mounting angle option. This model uses Option 01: 0° ±2.5° at 4.5 Hz minimum operating frequency. It matches horizontal or vertical orientations on bearing housings. The sensitivity temperature coefficient is only 0.2% per °C. This ensures stable output across temperature swings. The coil resistance is 1.25 kΩ ±5% with a typical locked inductance of 125 mH.
Expert Technical Evaluation & Performance Review: Signal Integrity and Environmental Toughness
This transducer outputs a velocity signal proportional to casing vibration. You take the output across terminals A and B with a calibration load of 10 kΩ. The two-wire design simplifies wiring and reduces installation costs. The anodized aluminum case (A204) resists corrosion and dust ingress. Environmentally, it tolerates up to 95% relative humidity (noncondensing) and 100% humidity when submerged with the integral cable.
The neoprene gasket seals the connector against moisture. The transducer weighs only 300 grams (10.5 ounces), making it easy to mount. Its height is 102 mm and diameter 41 mm typical. For storage, the cable model 74712 extends the temperature range to -29°C to +204°C. This allows temporary exposure to higher temperatures during process upsets.
Signal fidelity remains excellent due to the velocity range of 25 mm/s with a 10 kΩ load. The frequency response starts at 4.5 Hz (270 cpm) for low-speed machinery monitoring. This model is ideal for fans, pumps, and motors where early fault detection prevents catastrophic failure. The sensitivity of 20 mV/mm/s (±5%) is calibrated at the factory for the specified angle.
Logistics & Standard Packaging Details
- One Bently Nevada 9200-01-50-09-04 transducer with 50-foot integral cable
- Mounting base (isolated 5/8-18 UNF stud) pre-installed
- Calibration certificate and factory documentation
- Product in original sealed packaging
- Express shipping available via FedEx, UPS, and DHL
