Description
Engineered for high-reliability casing vibration monitoring on heavy industrial rotating machinery, the Bently Nevada 74712-06-05-04-01 is a robust, high-temperature two-wire velocity transducer. This sensor is designed to withstand extreme thermal conditions while providing an accurate output proportional to vibration velocity, making it critical for predictive maintenance and machinery protection systems.
This specific configuration features option 06 for the mounting angle and minimum operating frequency, meaning it is calibrated for mounting at 0 +/- 100 degrees with a 10 Hz (600 cpm) low-frequency cut-off. It incorporates the 05 mounting base option, which provides a direct 1/2-in 20 UNF-3A stud with no extra base adapter, and the 04 side-mount connector arrangement. These parameters make the transducer ideal for tight spatial installations in harsh, high-heat environments like turbine decks or compressor housings.
Features
- Continuous operation in extreme thermal environments up to +204 degC.
- Two-wire design for direct integration with legacy and modern vibration monitoring systems.
- Side-mount connector layout (Option 04) for applications with minimal vertical clearance.
- Rugged casing construction designed to resist moisture, dust, and corrosive industrial elements.
- Direct stud mounting via 1/2-in 20 UNF-3A threaded stud (Option 05) for reliable mechanical coupling.
Applications
- Steam turbine and gas turbine casing vibration monitoring.
- Boiler feed pumps and high-temperature industrial fans.
- Petrochemical rotating machinery operating in extreme process areas.
- Power generation and heavy manufacturing process lines.
Technical Specifications
| Manufacturer |
Bently Nevada |
| Part Number |
74712-06-05-04-01 |
| Product Type |
High-temperature Two-wire Transducer |
| Mounting Angle / Minimum Frequency Option (06) |
0 +/-100 degrees, 10 Hz (600 cpm) minimum operating frequency |
| Mounting Base Option (05) |
No base; 1/2-in 20 UNF-3A stud |
| Connector Option (04) |
Side-mount connector |
| Agency Approval Option (01) |
Standard regional hazardous area approvals (detailed by option 01) |
| Operating Temperature |
-29 degC to +204 degC (-20 degF to +400 degF) |
| Storage Temperature |
-29 degC to +204 degC (-20 degF to +400 degF) |
| Diameter |
41 mm (1.6 in) typical |
| Height |
82 mm (3.2 in) to 102 mm (4 in) typical (connector dependent) |
| Shipping Weight |
2.0 kg (4.4 lbs) |
Connections and Interfaces
| Terminal Pin |
Function |
| Pin A |
Signal Positive (+) |
| Pin B |
Signal Negative (-) / Common Ground |
Installation Guidelines
- Ensure the installation surface is flat, clean, and free of paint or debris to guarantee proper frequency response transmission.
- Do not exceed the specified mounting angle window of 0 +/- 100 degrees to prevent internal sensor damage and maintain calibration accuracy.
- Use high-temperature rated cable assemblies when running wiring through zones exceeding +100 degC.
- Ensure the side-mount connector is properly aligned and strain-relieved to prevent mechanical loading on the connection point.