Description
Product Overview
The Bently Nevada 172115-01 is an external termination I/O assembly engineered for use with the Bently Nevada 3500/65 Temperature Monitor. The module serves as the field wiring interface for RTD and thermocouple sensors in machinery protection systems requiring accessible and organized external connections.
Unlike internally terminated configurations, the 172115-01 allows sensor wiring to terminate on a dedicated external terminal strip, simplifying installation, troubleshooting, and maintenance activities within industrial control cabinets.
The module is designed for high-reliability temperature monitoring applications commonly found in turbines, compressors, generators, and rotating equipment protection systems.
Functional Characteristics
The 172115-01 provides a structured interface between field-mounted temperature sensors and the 3500 rack monitoring system.
Primary operational functions include:
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External termination for RTD and thermocouple inputs
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Secure screw-terminal field wiring connections
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Support for multiple RTD wiring configurations
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Cold junction compensation support for thermocouples
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Shielded signal routing for improved EMI resistance
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Backplane communication with the 3500/65 monitor
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Simplified field maintenance without monitor removal
The external wiring layout improves accessibility in large or high-density control panels.
Sensor Compatibility
The module supports common industrial temperature sensing technologies used in critical machinery protection environments.
Supported RTD Inputs
| RTD Type |
Wiring Method |
| Pt100 Platinum |
2-wire / 3-wire / 4-wire |
| Ni120 Nickel |
Supported |
| Cu10 Copper |
Supported |
Supported Thermocouple Inputs
| Thermocouple Type |
Industrial Application |
| Type J |
General process temperature |
| Type K |
High-temperature equipment |
| Type E |
Precision thermal monitoring |
| Type T |
Low-temperature applications |
Integrated cold-junction compensation improves thermocouple measurement stability and accuracy.
Technical Specifications
| Parameter |
Specification |
| Model Number |
172115-01 |
| Product Type |
External Termination I/O Module |
| Compatible Monitor |
3500/65 Temperature Monitor |
| Manufacturer |
Bently Nevada |
| System Series |
3500 Machinery Protection System |
| Termination Style |
External Terminal Block |
| Channel Capacity |
6 Channels |
| Supported Sensors |
RTD and Thermocouple |
| RTD Support |
Pt100, Ni120, Cu10 |
| Thermocouple Types |
J, K, E, T |
| Wiring Interface |
Screw-terminal connections |
| Signal Routing |
Shielded industrial design |
| Isolation |
Channel-to-channel and ground isolation |
| Mounting Method |
External rack terminal strip |
| Operating Temperature |
-30°C to +65°C |
| Humidity Rating |
95% non-condensing |
| Construction |
Industrial-grade rugged housing |
The module is optimized for electrically noisy environments where stable low-level temperature signal transmission is required.
Installation Advantages
The 172115-01 external termination arrangement offers practical advantages for industrial maintenance and cabinet integration.
Typical benefits include:
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Easier sensor replacement and rewiring
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Reduced maintenance downtime
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Cleaner cable organization inside control panels
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Improved accessibility for commissioning technicians
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Simplified troubleshooting procedures
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Better suitability for remote or distributed field wiring
These characteristics make the module especially useful in large turbine control cabinets and high-channel-count monitoring systems.
Common Industrial Applications
The 172115-01 is commonly installed in temperature monitoring systems protecting critical rotating equipment.
Typical applications include:
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Turbine bearing temperature monitoring
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Compressor thermal supervision
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Generator winding protection
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Pump bearing temperature measurement
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Gearbox housing temperature monitoring
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Lubrication oil temperature control
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Seal oil system temperature monitoring
It is frequently selected where external wiring accessibility is a project requirement.
Comparison with Related 3500/65 I/O Modules
| Part Number |
Termination Type |
Application Style |
| 172103-01 |
Internal Termination |
Compact cabinet installations |
| 172115-01 |
External Termination |
Accessible field wiring systems |
The 172115-01 is preferred when maintenance access and organized field termination are priorities.
FAQ
Q: What is the primary purpose of the 172115-01 module?
The module provides external field termination for RTD and thermocouple wiring connected to the 3500/65 Temperature Monitor.
Q: Does the module support both RTD and thermocouple sensors?
Yes. It supports Pt100, Ni120, Cu10 RTDs and J, K, E, T thermocouples.
Q: Can wiring be serviced without removing the monitor module?
Yes. External termination allows field wiring maintenance independently from the monitor card.
Q: Is the 172115-01 compatible with all 3500 systems?
It is specifically designed for use with the Bently Nevada 3500/65 Temperature Monitor configuration.
