Product Core Brief
- Model: 3500/04 136719-01
- Brand: BENTLY NEVADA
- Series: 3500 Machinery Protection System
- Core Function: Provides a centralized, low-impedance ground point for all shielded sensor cables in the rack.
- Product Type: Earthing I/O Module
- Key Specs: 3500 Backplane Mount | Shield Ground Termination | API 670 Compliant
- Condition: New Original / New Surplus
Product Introduction
BENTLY 3500/04 136719-01 is the dedicated earthing I/O module for 3500 monitoring racks. It collects shield drains from all field cables and bonds them to the rack chassis at a single point.
This industrial automation unit prevents ground loops by eliminating multiple ground paths. Proper installation is non-negotiable for noise-free vibration data in electrically noisy plants.
BENTLY 3500/04 136719-01
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | 3500/04 Earthing I/O |
| Part Number | 136719-01 |
| Primary Function | Shield Ground Termination |
| Rack Compatibility | 3500 Series Framework |
| Mounting Position | Any Available I/O Slot |
| Ground Path Resistance | < 0.1Ω to Chassis |
| Operating Temp | -30°C to +65°C |
| Compliance Standard | API 670 |
| Hot-Swap Capability | Yes (Passive Module) |
| Environmental Rating | Standard Industrial |
Quality Control Process
We validate every BENTLY 3500/04 136719-01 before shipment. First, we perform a low-resistance continuity test from every shield termination point to the chassis ground stud. Values must stay under 0.1Ω.
Next, we inspect all screw terminals and clamping mechanisms for stripped threads or corrosion. We also verify the backplane connector pins are straight and free of oxidation.
Finally, each replacement module ships in anti-static shielding with desiccant. This prevents moisture damage during transit.
Replacement Pitfall Guide
❗ Single Point Ground Violation: Never connect this module’s chassis stud to a separate earth rod. It MUST bond only to the 3500 rack chassis. Adding a second ground path creates a loop that injects 50/60Hz hum into every channel.
❗ Shield Termination Technique: Strip no more than 6mm of jacket. Exposed braid touching adjacent terminals causes cross-channel noise. Use the provided clamp, not just a screw, for 360° shield contact.
❗ Slot Location Irrelevance: Unlike communication modules, this earthing card works in any I/O slot. Don’t waste time hunting for a “designated” slot—it doesn’t exist.
❗ Chassis Paint Interference: The mounting flange must contact bare metal. Paint or anodization under the flange creates high-impedance bonding. Scrape the contact area before tightening.
Keep these in mind and you’ll cut 90% of rework time.
BENTLY 3500/04 136719-01
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| 3500/04 136719-01 | 136719-01 | Direct | Same part number, verify revision |
| 3500/04 136719-01 | 3500/04-01 | Direct | Alternate ordering format |
| 3500/04 136719-01 | N/A | N/A | No functional successor; passive hardware |
- Ground Path Resistance: < 0.1Ω terminal-to-chassis
- Shield Contact: 360° clamp termination
