Description
Product Overview
The Bently Nevada 3500/61-01-00 is a six-channel temperature monitoring module engineered for continuous thermal supervision within the 3500 Machinery Protection platform.
This configuration combines the main temperature monitor with a non-isolated RTD/thermocouple I/O module featuring internal terminations for direct field wiring. The module continuously evaluates temperature conditions from critical machinery and communicates alarm or shutdown conditions through the 3500 rack system when preset thresholds are exceeded.
The unit is commonly installed in turbine control systems, compressors, generators, and rotating equipment protection applications where stable and fast temperature monitoring is required.
Configuration Details
The 3500/61-01-00 configuration includes:
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Main Temperature Monitor Module: 163179-02
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RTD/TC Non-Isolated Internal Termination I/O Module: 133819-02
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Internal field termination design for direct sensor connection
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Standard non-certified version without hazardous-area agency approvals
Functional Characteristics
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Monitors up to six independent temperature channels
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Supports both RTD and thermocouple sensing technologies
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Continuous comparison against configured Alert and Danger limits
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Compatible with recorder output functionality for diagnostics and trending
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Configurable alarm delay timers for process stability
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Designed for integration into the 3500 Series Machinery Protection System
Technical Specifications
| Parameter |
Specification |
| Model |
3500/61-01-00 |
| Product Series |
3500 Machinery Protection System |
| Product Type |
Temperature Monitor with Recorder Outputs |
| Channel Capacity |
6 channels |
| I/O Configuration |
Internal Termination RTD/TC I/O |
| Main Module Part Number |
163179-02 |
| I/O Module Part Number |
133819-02 |
| Sensor Compatibility |
RTD and Thermocouple |
| RTD Types |
Platinum 100 Ω, Copper 10 Ω, Nickel 120 Ω |
| RTD Wiring |
3-wire and 4-wire |
| Thermocouple Types |
E, J, K, T, R, S |
| Input Impedance |
>10 MΩ for TC inputs |
| Signal Resolution |
0.1°C or 1°F |
| Typical Accuracy |
±1°C typical |
| Isolation |
500 Vdc channel-to-ground |
| Alarm Functions |
Independent Alert and Danger setpoints |
| Alarm Delay |
0.1 to 60 seconds configurable |
| Recorder Outputs |
Supported |
| Power Consumption |
Approx. 7 W |
| Operating Temperature |
-30°C to +65°C |
| Storage Temperature |
-40°C to +85°C |
| Relative Humidity |
95% non-condensing |
| Rack Installation |
One front slot + matching rear slot |
| Weight |
3.31 lbs |
| Country of Manufacture |
United States |
Internal Termination Design
The internal termination configuration allows field wiring to connect directly to screw terminals located on the rear I/O module. This simplifies installation and reduces additional external termination hardware requirements.
This arrangement is commonly selected for compact rack installations and standard industrial control cabinets.
Application Areas
Typical deployment environments include:
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Steam and gas turbine monitoring
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Compressor protection systems
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Generator winding temperature supervision
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Bearing metal temperature monitoring
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Oil and gas process equipment
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Power generation facilities
FAQ
Q1: Does the 3500/61-01-00 support both RTD and thermocouple inputs simultaneously?
Yes. Each channel can be individually configured for supported RTD or thermocouple sensor types.
Q2: What is the difference between internal and external termination versions?
The internal termination version allows direct field wiring to the rear I/O module, while external termination versions use separate termination assemblies.
Q3: Is this module approved for hazardous locations?
The “00” approval option indicates a standard version without additional hazardous-area agency certifications.
