Description
Product Introduction & Engineering Value
In racks filled with barrier I/O modules, proper grounding is non-negotiable for both safety and signal integrity. The Bently Nevada 136719-01 Earthing I/O Module creates the dedicated IS earth path that ties everything together through the 3500 backplane. Without it, your intrinsically safe installations won’t meet certification requirements.
This module works alongside various barrier I/O boards to ensure fault currents have a reliable path while maintaining isolation between channels. It is a must-have component for any 3500 rack operating in hazardous locations.
Technical Specifications
Function
- Provides IS earthing for internal barrier systems
- Compatible with multiple 3500 monitor types using barrier I/O
Environmental
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
- Humidity: 95% non-condensing
Physical
- Standard 3500 I/O module form factor
- Installs in available I/O slots (not Slot 1)
- Weight: Approximately 0.46 kg
Field Application & The “Trench” Experience
A refinery in the Midwest discovered during a compliance audit that several 3500 racks lacked the proper earthing I/O. One compressor rack was operating without the 136719-01, creating a certification gap. We installed the module during a short window and immediately brought the system into full IS compliance. The safety officer signed off the same day.
Niche Applications
- Hazardous area vibration monitoring on gas compressors in Zone 2 locations
- Intrinsically safe setups for offshore platform machinery protection
- Chemical plant installations requiring full barrier and earthing certification
- 136719-01
- 136719-01
Transparency SOP: QA & Testing
Our process for the 136719-01 starts with continuity and isolation testing between earth paths and all channels. We install it in a fully populated barrier-equipped test rack and verify proper grounding under simulated fault conditions. Every unit receives a ground integrity report before release as New Surplus.
The Veteran’s Tech Trap Guide
⚠️ Slot Placement — The earthing module must go in an available I/O slot. Placing it incorrectly or omitting it in a barrier rack can trigger Not OK conditions across multiple channels.
PRO TIP: One earthing module per rack is typically sufficient when using internal barrier I/O.
⚠️ Grounding Conductor — Ensure the rack chassis ground connects to the plant IS earth grid per local hazardous area codes. The module alone cannot compensate for poor external grounding.
Dynamic FAQ
Q: Is the 136719-01 required for every 3500 rack? A: Only for racks using internal barrier I/O modules in hazardous areas. Standard non-barrier systems do not need it.
Q: How many earthing modules are needed per rack? A: Typically one per rack containing barrier I/O.
Q: Does this module provide power to the rack? A: No. It is strictly for grounding/earthing functions. Power comes from the 3500/15 or 3500/05 supplies.
Q: What warranty applies to New Surplus units? A: One-year warranty on materials and workmanship.
Q: Can this module be hot-swapped? A: Yes, like most 3500 I/O modules, but plan the work carefully in running systems.
Q: How do I know if my rack needs the 136719-01? A: Check if any I/O modules in the rack have “internal barriers” in their part numbers. If yes, install the earthing module.
Start Chat
