Overview
Engineers benefit from its durability in extreme environments because the transducer resists shock, high temperatures, and dust, maintaining continuous performance even under harsh conditions. In addition, the device supports long cable runs, which allows flexible installation without compromising signal integrity. As a result, the 74712 series integrates seamlessly with Bently Nevada 3300 and 3500 monitoring systems and has gained widespread adoption in power generation, oil and gas, manufacturing, and mining applications.
Furthermore, its broad frequency response enables accurate monitoring across a wide vibration spectrum. Combined with selectable mounting and connector options, this transducer provides exceptional installation versatility. Therefore, engineers can confidently deploy the 74712-06-05-04-01 in demanding applications that require both reliability and precise vibration measurement.
Specification
| Parameter | Specification |
|---|---|
| Model | 74712-06-05-04-01 |
| Product Type | Seismoprobe Velocity High-Temperature Two-Wire Transducer |
| Sensitivity | 20 mV/mm/s (500 mV/in/s), ±5% |
| Calibration Load | 10 kΩ across pins A and B |
| Sensitivity Temperature Coefficient | 0.2% / °C |
| Frequency Response | 4.5 to 1000 Hz (+0, -3 dB typical) |
| Dynamic Operating Range | 2.54 mm (0.100 in) peak-to-peak max displacement |
| Velocity Range | 25 mm/s (1 in/s) |
| Coil Resistance | 1.25 kΩ ±5% |
| Locked Coil Inductance | 125 mH typical |
| Amplitude Linearity | ±5% from 0.01 to 5 in/s (0.254–127 mm/s) at 100 Hz |
| Shock Resistance | 50 g peak along non-sensitive axis |
| Transverse Sensitivity | ±10% max at 100 Hz and 1 in/s |
| Polarity of Output Signal | Pin A positive relative to Pin B when case moves toward connector |
| Lead Wire Maximum Length | 305 m (1,000 ft) |
| Operating Temperature | -29°C to +204°C (-20°F to +400°F) |
| Storage Temperature | -29°C to +204°C (-20°F to +400°F) |
| Relative Humidity | Up to 95% non-condensing; 100% non-submerged with integral cable |
| Maximum Use Altitude | 2,000 m (6,561 ft) above sea level |
| Environmental Protection | Dust and moisture resistant; consult for radiation environments |
| Transducer Mounting Angle | 0 ±100, minimum operating frequency 10 Hz (600 cpm) |
| Connector/Cable Option | Side mount |
| Mounting Base Option | No base; 1/2-20 UNF-3A stud |
| Agency Approval Option | CSA Approved |
FAQ
A1: Yes, it is rated for continuous operation up to +204°C (+400°F) and remains stable under thermal stress.
Q2: What is the maximum cable length supported?
A2: The transducer supports lead lengths up to 305 meters (1,000 feet) without signal degradation.
Q3: Which monitoring systems are compatible with this transducer?
A3: It integrates seamlessly with Bently Nevada 3300 and 3500 vibration monitoring systems.
Q4: Does this transducer require external power?
A4: No, the two-wire moving-coil design provides voltage output directly proportional to vibration velocity.
Manual/Datasheet PDF
Bently Nevada Top Products
| 3500 | 3300 | Probe&Cable |
| 3500/05-01-01-00-00-00 | 3300/05-22-00-00 | 990-04-70-01-00 |
| 3500/05-01-01-05-00-01 | 3300/05-24-00-00 | 990-04-70-02-00 |
| 3500/05-01-02-05-00-01 | 3300/45-02-01-03-00 | 990-04-XX-01-00 |
| 3500/05-01-03-05-00-01 | 3300/45-02-02-03-00 | 990-04-XX-03-00 |
| 3500/05-02-04-00-00-00 | 3300/48-01-01-01-00 | 990-05-50-02-01 |
| 3500/05-02-04-00-00-01 | 3300/48-02-01-00-00 | 990-05-70-01-00 |
| 3500/05-02-05-00-00-00 | 3300/50-01-01-00-00 | 990-05-70-01-01 |
| 3500/05-02-05-00-00-01 | 3300/50-02-01-00-00 | 990-05-70-02-00 |
| 3500/20 125744-02 | 3300/20-13-02-01-00-00 | 990-05-70-03-00 |
| 3500/22 125768-01 | 3300/40-13-01-01-00-00 | 990-05-XX-03-05 |
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