Description
Product Overview
The Bently Nevada 3500/65 172103-01 is a rack-mounted temperature monitoring solution designed for integration within the 3500 Machinery Protection System. It provides multi-channel acquisition of RTD and thermocouple signals for continuous thermal condition supervision of critical rotating machinery.
The associated I/O assembly 172103-01 defines an internal termination interface that connects field temperature sensors directly into the monitoring system, ensuring stable signal routing and reduced noise susceptibility in industrial environments.
This configuration is widely used in applications requiring accurate thermal tracking, alarm-based protection, and long-term machinery condition analysis.
Functional Architecture
The 3500/65 172103-01 processes temperature inputs through dedicated channels with independent configuration and protection logic.
Core system functions include:
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Six-channel temperature acquisition (RTD and thermocouple)
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Independent channel configuration and scaling
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Continuous conversion of analog signals to digital values
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Sensor integrity diagnostics including fault detection
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Alarm generation based on user-defined thresholds
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Integration with rack-based protection architecture
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Data availability for trending and diagnostic systems
Each channel operates independently, allowing mixed sensor types within a single module.
Sensor Compatibility and Measurement Support
The system supports standard industrial temperature sensing technologies used in machinery monitoring environments.
RTD Measurement Support
| Sensor Type |
Configuration |
| Pt100 Platinum RTD |
2-wire, 3-wire, 4-wire |
| Ni120 Nickel RTD |
Supported |
| Cu10 Copper RTD |
Supported |
RTD measurement range is typically -200°C to +850°C depending on probe design and calibration.
Thermocouple Support
| Thermocouple Type |
Application Scope |
| Type J |
General industrial heating |
| Type K |
Turbine and exhaust systems |
| Type E |
High-sensitivity measurements |
| Type T |
Low-temperature monitoring |
Cold junction compensation is internally applied for thermocouple accuracy stabilization.
Technical Specifications
| Parameter |
Specification |
| Model |
3500/65 172103-01 |
| Product Type |
RTD / Thermocouple Temperature Monitor |
| Manufacturer |
Bently Nevada |
| Series |
3500 Machinery Protection System |
| Channel Count |
6 Independent Channels |
| Sensor Inputs |
RTD and Thermocouple |
| RTD Types |
Pt100, Ni120, Cu10 |
| TC Types |
J, K, E, T |
| I/O Configuration |
Internal Termination (172103-01) |
| Signal Processing |
High-resolution A/D conversion |
| Fault Detection |
Open circuit, short circuit, out-of-range |
| Alarm Levels |
Alert and Danger per channel |
| Isolation |
Channel-to-channel and channel-to-ground |
| Operating Temperature |
-30°C to +65°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
95% non-condensing |
| Rack Requirement |
1 full-height slot |
| Dimensions |
24.1 × 2.6 × 11.2 cm |
| Weight |
0.45 kg |
The internal termination design simplifies wiring while maintaining signal stability in electrically noisy environments.
I/O Module Function — 172103-01
The 172103-01 I/O assembly defines the physical interface for sensor wiring and system connectivity.
Its functions include:
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Internal termination for field wiring
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Direct connection for RTD and thermocouple inputs
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Shielded signal routing to reduce EMI interference
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Compatibility with all 3500/65 monitoring configurations
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Structured wiring layout for maintenance efficiency
This component defines installation architecture rather than measurement functionality.
Industrial Applications
The 3500/65 172103-01 is widely deployed in machinery requiring continuous thermal condition monitoring and alarm-based protection.
Typical applications include:
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Turbine bearing temperature monitoring
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Compressor and pump bearing protection
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Generator winding thermal supervision
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Gearbox casing temperature tracking
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Lube and seal oil temperature control
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Industrial motor temperature monitoring
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Process equipment thermal protection systems
The module is particularly suited for rotating equipment where thermal deviation is an early indicator of mechanical failure.
FAQ
Q: Can each channel be configured independently?
Yes. Each of the six channels can be individually set for RTD or thermocouple input types.
Q: What is the role of the 172103-01 I/O module?
It provides internal termination and wiring interface for sensor connections within the 3500 system architecture.
Q: Does the module support mixed sensor types?
Yes. RTD and thermocouple inputs can be used simultaneously across different channels.
Q: Is this module suitable for turbine applications?
The 3500/65 172103-01 is commonly used in turbine and compressor temperature monitoring systems due to its accuracy and reliability.
