83387-054 Bently Nevada High Temp Accelerometer Cable

Bently Nevada 83387-054 54 Inch Hardline Cable

• Manufacturer & Model: Bently Nevada 83387-054 Hardline cable for accelerometer interface modules.
• Product Type: Mineral insulated Hardline cable with stainless steel overbraid.
• Cable Length: 54 inches (4.5 feet / 1.37 meters).
• Condition: New & original in factory packaging.
• Warranty: 12 months factory warranty.
• Made in: U.S.A.

Hardline vs Softline - Why Choose This

• Hardline max temperature: +649°C cable, +427°C connectors.
• Softline max temperature: Only +204°C cable, +93°C interface connector.
• Hardline insulation: Mineral (magnesium oxide) - will not burn.
• Softline insulation: Teflon - melts above +204°C.
• Hardline protection: Stainless steel overbraid - crush resistant.
• Softline protection: Convoluted Teflon tubing - flexible but less durable.

Connector Configuration

• Accelerometer end: Mates to MS 3100R-10SL-4P receptacle.
• Accelerometer connector feature: Viton insert for high temperature sealing.
• Disconnect interface end: Mates to MS 3106-10SL-4S connector.
• Connector type: Military specification circular connectors.
• Connector material: High temperature alloy construction.
• Note: Different from Softline interface connector (MS 3112-8-3P).

Model Number Breakdown

• 83387: Base model for Hardline cable family.
• 054: Length in inches = 54 inches (4.5 feet).
• Other common lengths: 012 (12in), 024 (24in), 036 (36in), 072 (72in).
• Custom lengths: Available upon request.
• Inch vs metric: Bently specifies Hardline in inches, Softline in meters.

High Temperature Ratings

• Cable continuous: -54°C to +649°C (-65°F to +1200°F).
• Accelerometer connector: -54°C to +427°C (-65°F to +800°F).
• Disconnect interface connector: -54°C to +427°C (-65°F to +800°F).
• System limit: Connectors limit maximum to +427°C.
• Application example: Gas turbine exhaust, furnace bearings, kilns.
• Safety margin: Cable survives where connectors cannot.

Mineral Insulation Benefits

• Insulation material: Compacted magnesium oxide (MgO).
• Fire resistance: Completely non-combustible.
• Radiation resistance: Withstands nuclear environments.
• Aging: No degradation over decades of use.
• Moisture sensitivity: Ends must stay sealed - mineral absorbs water.
• Handling: More rigid than Softline, plan bends carefully.

Stainless Steel Overbraid

• Material: Braided AISI 304 or 316 stainless steel.
• Function: Mechanical protection for mineral insulated core.
• Crush resistance: Withstands heavy foot traffic and tools.
• Abrasion resistance: Rubs against machine parts without damage.
• Cut resistance: Difficult to cut accidentally.
• Grounding: Braid provides electrical continuity.

Twisted Shielded Pair Details

• Conductor type: Twisted pair inside mineral insulation.
• Shielding: Mineral acts as dielectric and insulator.
• Low noise: Excellent for low level accelerometer signals.
• Capacitance: Stable over temperature range.
• Resistance: Low per foot due to solid conductors.
• Signal quality: Maintains integrity at extreme temperatures.

Softline Comparison for Reference

• Softline cable temp: -54°C to +204°C only.
• Softline accelerometer connector: -54°C to +200°C.
• Softline interface connector: -45°C to +93°C (MS 3112-8-3P).
• Softline jacket: Convoluted Teflon tubing.
• Softline best for: Ambient temperature areas under 200°C.
• When to choose Softline: Lower cost, more flexible, adequate temp rating.

Physical Characteristics

• Length: 54 inches (1.37 meters) exact.
• Outer diameter: Approximately 6-8mm with overbraid.
• Weight: Approximately 0.3 kg (0.66 lb).
• Minimum bend radius: 100mm (4 inches) - less flexible than Softline.
• Connector size: Standard MS series circular.
• Color: Stainless steel natural finish.

Compatible Equipment

• Accelerometers: Bently Nevada with MS 3100R-10SL-4P receptacle.
• Interface modules: Modules using MS 3106-10SL-4S connector.
• Note different connector: Hardline uses MS 3106-10SL-4S, not MS 3112-8-3P.
• Verify compatibility: Check your module connector before ordering.
• Adapter available: May need adapter for Softline modules.

Installation Guidelines

• Pre-bend before installation: Mineral cable resists sharp bends.
• Minimum bend radius: 100mm (4 inches) - plan routing.
• Do not kink: Kinking damages mineral insulation.
• Connector torque: Hand-tighten plus 1/8 turn with wrench.
• Support heavy cable: Use clamps every 30cm (12 inches).
• Keep ends capped: Mineral absorbs moisture before installation.

Moisture Protection Warning

• Critical issue: Mineral insulation absorbs water.
• Keep ends capped: Factory caps protect until installation.
• Moisture effect: Reduces insulation resistance drastically.
• Drying required: If moisture enters, bake at 150°C for 24 hours.
• Installation tip: Connect immediately after removing caps.
• Storage: Keep in dry area with caps installed.

Typical Applications

• Gas turbine exhaust: Temperatures exceed Softline limits.
• Steam turbine bearings: High temperature zones.
• Industrial furnaces: Bearing and casing monitoring.
• Kilns and dryers: Rotary equipment high heat areas.
• Compressor discharge: Piping and casing vibration.
• Nuclear plant: Radiation resistant mineral insulation.

Package Contents

• Cable assembly: 83387-054 Hardline cable with both connectors.
• Protective caps: Installed on both connectors.
• Documentation: Installation instruction sheet.
• Desiccant: Inside sealed bag to prevent moisture.
• Certification: Factory test certificate available upon request.

Shipping Information

• Shipping weight: 0.5 kg (1.1 lb) packaged.
• Packaging: Sealed anti-moisture bag in cardboard box.
• Box dimensions: 20 x 20 x 10 cm.
• FedEx: 2-3 business days.
• UPS: 2-4 business days.
• DHL: 3-5 business days.

Frequently Asked Questions

• Q: When should I choose Hardline 83387-054 instead of Softline?
  A: Choose Hardline when ambient temperature at the cable exceeds +204°C. Hardline handles up to +649°C at the cable and +427°C at connectors. Common applications include gas turbine exhaust monitoring, kiln bearings, and furnace vibration measurements where Softline would melt or fail.
• Q: Why does Hardline use a different interface connector than Softline?
  A: Hardline uses MS 3106-10SL-4S, a high temperature connector rated to +427°C. Softline uses MS 3112-8-3P rated only to +93°C. The Hardline connector withstands extreme heat. Check your interface module connector type before ordering - they may not be interchangeable without an adapter.
• Q: What happens if moisture gets into the mineral insulation?
  A: Magnesium oxide insulation absorbs water like a sponge. Wet insulation loses its dielectric properties, causing signal shorts and noise. If moisture enters, bake the cable at 150°C for 24 hours with ends open. Always keep protective caps installed until the moment of connection.
• Q: Can I bend Hardline cable like regular cable?
  A: No. Hardline with mineral insulation is much stiffer than rubber or Teflon cables. Minimum bend radius is 100mm (4 inches). Bending tighter than this crushes the mineral powder inside, creating a short circuit or open circuit. Pre-form gentle bends before installation.
• Q: Is the 54 inch length the only option for Hardline?
  A: No. Bently Nevada offers Hardline in various inch lengths. Common codes include 012 (12in), 024 (24in), 036 (36in), 054 (54in), and 072 (72in). Longer custom lengths available by special order. Select the shortest length that reaches to minimize signal loss and cost.