136703-01 Bently Nevada Discrete Internal Barrier I/O Module with Internal Terminations for 3500/50M Tachometer Module

The Bently Nevada 136703-01 is a high-performance 2-channel I/O module designed with discrete internal barriers and internal terminations, engineered exclusively as the essential machinery protection card for the Bently Nevada 3500/50M Tachometer Module within the 3500 machinery protection system. Serving as an intrinsically safe interface, it delivers critical explosion protection for field transducers operating in high-risk hazardous areas, completely eliminating the need for bulky external safety barrier components and streamlining your Bently Nevada spare parts inventory.

• Intrinsic safety barrier design
  Built-in dual protection, internal barrier plus termination blocks. Helps keep hazardous area transducer signals isolated inside the Bently Nevada 3500 rack module, without extra external barrier units.
• Speed monitoring function
  Handles proximity sensor interfaces and magnetic pickup inputs. Used for shaft speed tracking, rotor acceleration, zero-speed detection, and reverse rotation checks — mainly for shaft rotative speed monitoring.
• Tachometer signal conditioning
  Set up through 3500 rack configuration software. Keyphasor signals get conditioned and sent through the backplane, so system integration stays straightforward inside the 3500 machinery protection system.
• Hazardous area certification
  Supports cNRTLus (Class I, Division 2) and ATEX/IECEx (Class I, Zone 2). Used in industrial setups where explosion protection and intrinsically safe interface requirements are needed.

• The Americas: United States (USA) | Canada | Brazil | Mexico | Chile
• Europe: Germany | United Kingdom (UK) | France | Italy | Netherlands | Poland
• Middle East & Africa: United Arab Emirates (UAE) | Saudi Arabia | South Africa | Egypt
• Asia-Pacific: Singapore | South Korea | Australia | Vietnam | Thailand | India

• Stock level
  Stock level is quite big overall. A mix of new items and also some older or discontinued parts still available in warehouse.
• Brand coverage
  We work with a wide range of brands — Allen-Bradley, ABB, Honeywell, Bently Nevada, Triconex, GE, and others depending on sourcing.
• Delivery timing
  For many common requests, shipment can usually go out within about 24 hours, sometimes even faster if the item is already picked and ready.
• Quality & warranty
  Every part is checked before sending. Standard 12-month warranty is included in most cases, nothing complicated.