The Bently Nevada 21747-040-00 is a 4-meter Proximitor probe extension cable designed for the 3300 and 7200 Series Proximity Transducer Systems. It connects a proximity probe to its Proximitor sensor, transmitting high-frequency eddy-current displacement signals for vibration and shaft position monitoring on critical rotating machinery.
Item No :
21747-040-00Order(MOQ) :
1 PiecePayment :
EXWProduct Origin :
USAShipping Port :
WuhanLead Time :
3~5 daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 21747-040-00 |
| Product Type | Proximitor Probe Extension Cable |
| Product Family | 3300 / 7200 Series Proximity Transducer System |
| Cable Length | 4.0 meters (157 inches) |
| Armor Option | Non-armored (Option Code: 00) |
| Characteristic Impedance | 50 Ω nominal |
| Connector Type | ClickLoc connectors, gold-plated contacts |
| Shielding | Aluminum foil + copper braid dual-layer shielding |
| Operating Temperature | -35°C to +177°C |
| Storage Temperature | -46°C to +125°C |
| Humidity | 0% to 95% (non-condensing) |
| Compliance | API 670 Standard |
| Weight | Varies by source: 0.06 kg / 0.24 kg / 0.45 kg |
| Country of Origin | USA |
| Lifecycle Status | Active |
Part Number Breakdown (21747-040-00):
21747 – Base model: 3300/7200 Series extension cable
-040 – Cable length: 4.0 meters
-00 – Armor option: Without armor
| Model | Description | Typical Application |
|---|---|---|
| 21747-040-00 (this model) | 4.0m non-armored extension cable, 3300/7200 series | Standard 4m extension with flexible routing |
| 21747-080-00 | 8.0m non-armored extension cable | Longer-distance installations |
| 21747-040-01 | 4.0m armored extension cable | Mechanical protection in harsh environments |
| 330130-040-00-00 | 3300 XL 4.0m standard extension cable | 3300 XL system companion cable |
| 330130-040-01-00 | 3300 XL 4.0m armored extension cable | 3300 XL with armor protection |
| 330180-50-00 | 3300 XL Proximitor Sensor, 5m system length | Required sensor for 5m system (1m probe + 4m extension) |
Q1: What is the primary function of the 21747-040-00?
It is an extension cable that connects a Bently Nevada proximity probe to its Proximitor sensor, transmitting the eddy-current displacement signal over a 4-meter distance. This allows installation flexibility when the probe and monitoring electronics cannot be mounted in close proximity .
Q2: Which systems is this cable compatible with?
The 21747-040-00 is compatible with Bently Nevada 3300 and 7200 Series Proximity Transducer Systems, as well as 9000 Series monitoring systems. It supports both standard and 3300 XL probes and Proximitor sensors .
Q3: What are the common causes of signal instability with this cable?
According to field troubleshooting experience, the most frequent causes of signal instability are extension cable routing problems, shielding damage, and connector contamination rather than probe hardware failure. Common symptoms include intermittent displacement alarms, signal spikes during startup, and waveform distortion under varying load .
Q4: How do I ensure proper installation to avoid signal interference?
Key installation practices include:
Re-route the cable away from power systems (especially inverter wiring) to minimize EMI
Verify shielding continuity and grounding quality
Ensure connectors are clean and properly tightened with the ClickLoc mechanism
Avoid cable damage near tray supports or sharp edges
Q5: Is this cable still in production?
Yes. The 21747-040-00 is listed as Active by multiple distributors and is available in stock from aftermarket suppliers. It is a standard, widely used component in the Bently Nevada ecosystem.
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The Bently Nevada 330130-085-00-00 is an 8.5-meter standard extension cable for the 3300 XL 8 mm Proximity Transducer System. It connects a 3300 XL proximity probe to its Proximitor® sensor, transmitting eddy-current displacement signals for vibration, axial position, and Keyphasor measurements on critical rotating machinery.
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The Bently Nevada 21747-040-00 is a 4-meter Proximitor probe extension cable designed for the 3300 and 7200 Series Proximity Transducer Systems. It connects a proximity probe to its Proximitor sensor, transmitting high-frequency eddy-current displacement signals for vibration and shaft position monitoring on critical rotating machinery.
The Bently Nevada 330710-00-060-10-02-00 is a 3300 XL 11 mm Proximity Probe designed for non-contact vibration and position measurement on large, fluid-film bearing machinery. Its 11 mm tip provides a longer linear range compared to the standard 8 mm system, making it ideal for applications requiring greater measurement span, such as axial thrust position, differential expansion, and radial vibration on steam turbines, centrifugal compressors, and large pumps.
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