High-temperature Two-wire Transducer | 74712-06-12-04-04

Overview

The Bently Nevada 74712-06-12-04-04 is a high-temperature, two-wire transducer, engineered for use in extreme environments with temperatures ranging from -29°C to +204°C (-20°F to +400°F). This device is ideal for monitoring machinery in industries requiring precise vibration and velocity measurements. Made in the U.S.A., it comes with ATEX/IECEx approval and offers customizable options for mounting, connectors, and more.

Features

• Agency Approvals: ATEX/IECEx certified for hazardous environments.
• Temperature Range: Operates in extreme temperatures from -29°C to +204°C (-20°F to +400°F).
• Mounting Options: Isolated circular base with a ½-in 20 mounting or side mount connector.
• Shock Resistance: Can withstand up to 50g peak acceleration.
• Material: Anodized aluminum housing, with a silicone gasket for durability.
• Polarity: Output signal polarity is defined—Pin A goes positive when the transducer case velocity is towards the connector.

Technical Specifications

• Brand: Bently Nevada
• Model: 74712-06-12-04-04
• Suffix:
  • 06: Mounting angle with 0 ±100, 10 Hz (600 cpm) frequency
  • 12: Isolated circular base ½-in 20
  • 04: Side mount connector
• Sensitivity: 20 mV/mm/s (500 mV/in/s) ±5% at the angle of calibration.
• Calibration Load: 10 kΩ, output across pins A and B.
• Frequency Response: 4.5 to 1000 Hz (+0, -3dB typical).
• Dynamic Operating Range: 2.54 mm (0.100 in) peak-to-peak.
• Velocity Range: 25 mm/s (1 in/s) at +22°C with 100 Hz casing vibration.
• Coil Resistance: 1.25 kΩ ±5%, with 125 mH typical inductance.
• Amplitude Linearity: ±5% from 0.01 to 5.0 in/s (0.254 to 127 mm/s) at 100 Hz.
• Environmental Limits: Operating and storage temperature range from -29°C to +204°C (-20°F to +400°F).
• Weight: 480 grams (17 ounces).

FAQ

Q: What is the maximum operating temperature of the Bently Nevada 74712?
A: The maximum operating temperature is +204°C (+400°F), making it suitable for extreme industrial environments.

Q: Can I use this transducer with a long cable?
A: Yes, the transducer supports up to 305 meters (1000 feet) of cable, but note the frequency roll-off for longer lengths.

Q: Is the Bently Nevada 74712 suitable for hazardous environments?
A: Yes, it is ATEX/IECEx certified, making it safe for use in explosive atmospheres.

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