200350-09-00-01 | Bently Nevada 100 mV/g Accelerometer

Introduction to the Bently Nevada 200350-09-00-01

When reliable vibration monitoring is critical, the 200350-09-00-01 from Bently Nevada delivers precise data. This accelerometer is part of the 200350 series, engineered for industrial environments where accuracy and durability are non-negotiable. With a sensitivity of 100 mV/g ±20% and a measurement range of ±50g, it captures both subtle and extreme vibration events. The unit is built for harsh conditions, featuring an IP68 enclosure rating and a welded hermetic seal. For engineers seeking a robust sensing solution, the 200350-09-00-01 offers proven performance.

Key Features and Technical Specifications

• Sensitivity: 100 mV/g ±20% (10.2 mV/m/s² ±20%).
• Frequency Range: 30-600,000 cpm (0.5-10,000 Hz) ±3 dB.
• Measurement Range: ±50g.
• Broadband Electrical Noise (1-10 kHz): 350 μg (3,434 μm/s²).
• Output Bias Voltage: 8 to 12 VDC.
• Excitation Voltage: 18 to 28 VDC.
• Constant Current Excitation: 2 to 20 mA.
• Operating Temperature: -65°F to +250°F (-54°C to +121°C).
• Enclosure Rating: IP68.
• Weight: 0.051 kg.

A standout feature is the low broadband electrical noise of 350 μg, which ensures clean signals even in electrically noisy environments. This makes the 200350-09-00-01 ideal for early fault detection in rotating machinery.

Applications and Use Cases

In heavy industries such as oil and gas, power generation, and manufacturing, the 200350-09-00-01 monitors vibration on pumps, motors, fans, and compressors. Its wide frequency range captures both low-speed and high-speed machine dynamics. The IP68 rating allows operation in wet, condensing environments, including wash-down areas and outdoor installations. Because it withstands 100% relative humidity, it is suitable for submersible applications (non-submerged). The accelerometer's ±50g range also covers high-impact events during startup or fault conditions.

Installation and Setup

Mount the 200350-09-00-01 using the 1/4-28 female mounting thread. Apply a mounting torque of 2 to 5 ft-lb (2.7 to 6.8 N-m) to ensure proper coupling without damaging the sensor. The top-mounted 2-pin Mil-C-5015 electrical connector simplifies cable routing. Use a constant current excitation between 2 and 20 mA from a suitable power supply (18-28 VDC). Allow a settling time of 2.0 seconds (within 1% of bias) after power-up before taking measurements. For best results, mount the accelerometer directly on a flat, clean surface to maximize frequency response.

Maintenance and Reliability

Regular inspection of the 200350-09-00-01 ensures long-term accuracy. Check the connector and cable for damage or corrosion, especially in humid or corrosive atmospheres. The welded hermetic seal and stainless steel housing provide excellent protection against moisture and contaminants. Verify the output bias voltage (8-12 VDC) periodically to confirm the sensor is operating within spec. Because the unit has no moving parts, its primary wear point is the cable assembly. Replace cables if signs of wear appear. Follow the manufacturer's guidelines for periodic calibration to maintain the ±20% sensitivity tolerance.

Compatibility and Integration

The 200350-09-00-01 integrates with any data acquisition system that supplies 18-28 VDC excitation and accepts a 2-20 mA constant current source. Its output impedance is less than 150 ohms, making it compatible with most PLCs, vibration monitors, and distributed control systems. The accelerometer's discharge time constant of ≥0.3 seconds ensures accurate low-frequency response. For systems requiring agency approvals, this model carries CSA, ATEX, and IECEx certifications, simplifying global deployment.

Troubleshooting and Common Issues

If the output bias voltage drifts outside 8-12 VDC, check the excitation voltage and current. A bias voltage near 0 VDC often indicates a short circuit or damaged sensor. If noise levels exceed 350 μg, verify that the cable is properly shielded and not routed near high-voltage lines. A loose mounting can cause spurious low-frequency signals; always torque to 2-5 ft-lb. If the accelerometer fails to respond, measure the constant current excitation (2-20 mA) at the connector. For persistent issues, consult the Bently Nevada manual or contact Petro Auto Tech for support.

Frequently Asked Questions

Q: What is the sensitivity of the 200350-09-00-01?

A: The sensitivity is 100 mV/g ±20% (10.2 mV/m/s² ±20%).

Q: What is the operating temperature range?

A: It operates from -65°F to +250°F (-54°C to +121°C).

Q: What approvals does this accelerometer have?

A: It carries CSA, ATEX, and IECEx agency approvals.

Q: What is the enclosure rating?

A: The enclosure rating is IP68, suitable for condensing humidity and non-submerged immersion.

Q: What is the recommended mounting torque?

A: Apply 2 to 5 ft-lb (2.7 to 6.8 N-m) of torque.

Product Support and Availability

The 200350-09-00-01 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering. Our team can assist with technical questions and cross-references.