Bently Nevada 74712-06-12-04-02 | Seismoprobe

Overview:

The Bently Nevada 74712-06-12-04-02 Seismoprobe is a high-performance, high-temperature, two-wire velocity transducer designed for reliable monitoring in industrial environments. With a rugged build and precise measurements, it is ideal for vibration monitoring in machinery and equipment. Its compact, robust design ensures consistent performance in harsh conditions, supporting efficient condition monitoring for machinery protection systems like the 3300 or 3500 Monitor.

Key Features:

• High-Temperature Operation: With an operating temperature range of -29°C to +204°C (-20°F to +400°F), the 74712 Seismoprobe excels in extreme conditions.
• High Sensitivity: Provides a sensitivity of 20 mV/mm/s (500 mV/in/s) ±5% when properly terminated, ensuring precise vibration measurements.
• Durable Construction: The case is made of anodized aluminum A204, ensuring resistance to corrosion and wear.
• Transverse Sensitivity: ±10% maximum of the sensitive axis sensitivity at 100 Hz and 1.0 in/s (2.54 cm/s).
• Shock Resistance: Withstands a peak acceleration of 50 g, ensuring the probe performs reliably under physical stress.
• Coil Resistance: 1.25 kΩ ±5% with a locked coil inductance of 125 mH, typical.
• Polarity of Output Signal: Pin A goes positive with respect to Pin B when the transducer case velocity moves towards the connector.

Technical Specifications:

• Brand: Bently Nevada
• Model: 74712-06-12-04-02
• Operating Temperature: -29°C to +204°C (-20°F to +400°F)
• Frequency Response: 4.5 to 1000 Hz (270 to 60,000 CPM); +0, -3dB typical.
• Velocity Range: 25 mm/s (1 in/s) at 100 Hz with a 10 kΩ load.
• Amplitude Linearity: ±5% from 0.01 to 5.0 in/s (0.254 to 127 mm/s) at 100 Hz (6000 CPM).
• Environmental Limits: Withstands harsh operating and storage conditions.
• Mounting Options: Includes isolated circular base ½-in 20, side-mount connector options, and more.

FAQ:

1. What is the maximum displacement of the Seismoprobe?
2. The maximum displacement is 2.54 mm (0.100 in) peak to peak.
3. What is the maximum lead wire length?
4. The maximum lead wire length is 305 meters (1,000 feet).
5. How do I mount the Seismoprobe?
6. The probe can be mounted using various options, including 1/2-20, 1/4-20, 1/4-28, 5/8-18, or M10X1 threads, with specific torque requirements.
7. What is the frequency response of the Seismoprobe?
8. The frequency response is from the minimum operating frequency to 1 kHz (60,000 CPM), with typical performance of +0, -3dB.
9. What materials are used in the Seismoprobe?
10. The case is made of anodized aluminum, and the gasket material is silicone. The connectors are cadmium-plated aluminum and silver-plated copper.

Check official datasheet for more detailed information:9200 and 74712 Seismoprobe Velocity Transducers Datasheet