Bently Nevada 1701/06 Isolator Terminal Base (ITB)

General Info

• Manufacturer: Bently Nevada (a division of Baker Hughes)
• Model Number: 1701/06
• Type: Isolator Terminal Base (ITB)
• Application: Provides an intrinsically safe interface for transducer installations without requiring external safety barriers. Supports hazardous area solutions for FieldMonitor systems.

Product Description

The Bently Nevada 1701/06 Isolator Terminal Base (ITB) is a critical component designed for hazardous area applications. It facilitates intrinsically safe transducer installations without the need for external safety barriers or establishing a dedicated intrinsically safe ground. The 1701/06 ITB is used with the 170190 Dual Galvanic Isolator module, which supports multiple types of transducers, including internal and external Proximitor® sensors, velocity transducers, and accelerometers.

The ITB must be installed in non-hazardous, Division 2, or Zone 2 areas, while transducers can be placed in hazardous Division 1, Zone 1, or Zone 0 areas. The ITB provides a convenient interface for connecting transducers, simplifying wiring and ensuring safety in hazardous environments.

Product Features

• Intrinsic Safety: Supports intrinsically safe transducer installations without external safety barriers.
• Compatibility: Works with a wide range of Bently Nevada transducers, including Proximitor sensors, velocity transducers, and accelerometers.
• Flexible Installation: Can be installed in a variety of mounting configurations, including bulkhead mounting and compatibility with low-profile DIN rails.
• Dual Galvanic Isolation: Supports the 170190 Dual Galvanic Isolator module to ensure safe and reliable signal transmission.

Technical Specifications

Electrical Specifications

• Primary Power Input:
  • Voltage Range: +19 VDC to +33 VDC
  • Power Dissipation: 36 Watts at +24 VDC, typical for a complete system including monitors, isolators, and transducer I/O modules
• Input/Output Specifications:
  • Flexbus Connectors:
    • 16-pin female Flexbus connector for direct connection to another Flexbus module
    • 16-pin male Flexbus connector for connection using Flex extender cable
  • Euro Terminal:
    • 8-conductor Euro terminal for Keyphasor field wiring, supporting 16 to 18 AWG wires
  • Buffered Dynamic Outputs:
    • 25-pin DSUB connector for buffered dynamic output signals
    • Coaxial connectors for buffered Keyphasor output signal
• Module Capacity:
  • Supports up to 4 monitor modules, with 2-channel transducer I/O modules for Keyphasor input

Mechanical Specifications

• Dimensions:
  • Height: 12.7 cm (5 in)
  • Width: 20.32 cm (8 in)
  • Depth: 50.80 cm (20 in)
• Weight: 1.6 kg (3.5 lbs) without modules installed
• Mounting: Bulkhead mounting using 6 #10 bolts; compatible with 35 mm low-profile DIN rails

Environmental Specifications

• Operating Temperature: -20°C to +70°C (-4°F to +158°F)
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Humidity: 5% to 95% relative humidity, non-condensing
• Hazardous Area Approvals:
  • CSA/NRTL/C: Class I, Zone 0; Class I, Division 1, Groups A, B, C, D
  • ATEX: Zone 2 IIC T4 for ambient temperatures between -30°C and +70°C

Compliance and Certifications

• ATEX/IECEx Compliance: Certified for use in hazardous areas, including Zone 0 and Zone 2.
• CSA/NRTL/C Compliance: Meets safety requirements for installation in Class I, Division 1, and Division 2 hazardous locations.