Designed specifically for integration within industrial machinery protection systems, the Bently Nevada 2789-204 provides critical low-loss coaxial signal transmission between proximity probes and proximitor sensors. This high-reliability extension cable features a 17-foot (5.2-meter) length with an engineered 95-ohm characteristic impedance to prevent signal attenuation and phase distortion. Constructed with a fluid-resistant outer jacket, the cable is built to withstand continuous exposure to industrial lubricants, synthetic oils, and moisture in harsh turbine and compressor environments.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model / Article Number | 2789-204 |
| System Compatibility | 7200 Series 5mm and 8mm Proximity Transducer Systems |
| Cable Length | 17.0 Feet (5.2 Meters) |
| System Impedance | 95 Ohms (Nominal) |
| Armoring Option | Non-Armored standard coaxial extension |
| Operating Temperature Range | -35 to +177 degC (-31 to +350 degF) |
| Minimum Bend Radius | 25.4 mm (1.0 inch) |
| Country of Origin | United States (U.S.A.) |
| Shipping Weight (Calculated) | 2.0 kg (4.4 lbs) |
| Connection Side | Connector Interface Type | Mating Component |
|---|---|---|
| Proximity Probe Side | Miniature Coaxial Female Connector | Matches coaxial male plug on 7200 Series proximity probe leads |
| Proximitor Side | Miniature Coaxial Male Plug | Connects to the female BNC/Coaxial input terminal on 7200 Series Proximitors |
The 2789-204 extension cable is specifically designed for the legacy 7200 Series proximity systems. Note that it is electrically and physically incompatible with newer 3300 XL systems, which require 75-ohm impedance cables. Attempting to cross-connect 7200 and 3300 series transducers will disrupt the proximitor linear output curve, resulting in incorrect measurement readings.
When laying out your vibration loop, always verify that the total physical length of the system (probe lead plus extension cable) matches the exact calibration profile of the Proximitor (typically 5.0 meters or 9.0 meters). Using a 17-foot (approx. 5.2m) cable inside a system calibrated for a different overall length will lead to significant voltage-to-distance conversion offsets.
Prior to mating, ensure the miniature coaxial connectors are completely clean and dry. Use dedicated connector protector sleeves (silicone or heat-shrink tubing) over mated connections inside junction boxes to prevent moisture ingress, which can create ground loops and skew dynamic vibration signals.
Before performing cable replacement or maintenance, completely bypass or disable all automatic machine shutdown and control loop actions associated with the TSI (Turbine Supervisory Instrumentation) system. Unplugging active sensor cables can cause signal spikes that trigger false emergency trips on critical machinery.
Route the extension cable through clean, dedicated steel conduits to isolate the dynamic sensor signal from heavy AC power lines or high-frequency motor drives.
Connect the coaxial joint hand-tight, then secure it using Bently Nevada recommended torque or connector termination tools. Do not apply excess force.
Ensure the bend radius of the cable routing does not drop below 25.4 mm (1 inch) at any point along the conduit run to prevent coaxial shielding degradation.
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Returns & Warranty
Manufacturer: Bently Nevada
Product No.: 2789-204
Country of origin:United States
Product Type: Proximity Probe Extension Cables
Payment: T/T, Western Union
Weight: 320g
Shipping port: Xiamen
Warranty: 12 months
Designed specifically for integration within industrial machinery protection systems, the Bently Nevada 2789-204 provides critical low-loss coaxial signal transmission between proximity probes and proximitor sensors. This high-reliability extension cable features a 17-foot (5.2-meter) length with an engineered 95-ohm characteristic impedance to prevent signal attenuation and phase distortion. Constructed with a fluid-resistant outer jacket, the cable is built to withstand continuous exposure to industrial lubricants, synthetic oils, and moisture in harsh turbine and compressor environments.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model / Article Number | 2789-204 |
| System Compatibility | 7200 Series 5mm and 8mm Proximity Transducer Systems |
| Cable Length | 17.0 Feet (5.2 Meters) |
| System Impedance | 95 Ohms (Nominal) |
| Armoring Option | Non-Armored standard coaxial extension |
| Operating Temperature Range | -35 to +177 degC (-31 to +350 degF) |
| Minimum Bend Radius | 25.4 mm (1.0 inch) |
| Country of Origin | United States (U.S.A.) |
| Shipping Weight (Calculated) | 2.0 kg (4.4 lbs) |
| Connection Side | Connector Interface Type | Mating Component |
|---|---|---|
| Proximity Probe Side | Miniature Coaxial Female Connector | Matches coaxial male plug on 7200 Series proximity probe leads |
| Proximitor Side | Miniature Coaxial Male Plug | Connects to the female BNC/Coaxial input terminal on 7200 Series Proximitors |
The 2789-204 extension cable is specifically designed for the legacy 7200 Series proximity systems. Note that it is electrically and physically incompatible with newer 3300 XL systems, which require 75-ohm impedance cables. Attempting to cross-connect 7200 and 3300 series transducers will disrupt the proximitor linear output curve, resulting in incorrect measurement readings.
When laying out your vibration loop, always verify that the total physical length of the system (probe lead plus extension cable) matches the exact calibration profile of the Proximitor (typically 5.0 meters or 9.0 meters). Using a 17-foot (approx. 5.2m) cable inside a system calibrated for a different overall length will lead to significant voltage-to-distance conversion offsets.
Prior to mating, ensure the miniature coaxial connectors are completely clean and dry. Use dedicated connector protector sleeves (silicone or heat-shrink tubing) over mated connections inside junction boxes to prevent moisture ingress, which can create ground loops and skew dynamic vibration signals.
Before performing cable replacement or maintenance, completely bypass or disable all automatic machine shutdown and control loop actions associated with the TSI (Turbine Supervisory Instrumentation) system. Unplugging active sensor cables can cause signal spikes that trigger false emergency trips on critical machinery.
Route the extension cable through clean, dedicated steel conduits to isolate the dynamic sensor signal from heavy AC power lines or high-frequency motor drives.
Connect the coaxial joint hand-tight, then secure it using Bently Nevada recommended torque or connector termination tools. Do not apply excess force.
Ensure the bend radius of the cable routing does not drop below 25.4 mm (1 inch) at any point along the conduit run to prevent coaxial shielding degradation.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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