Product No.: 3500/61 163179-02 + 136711-02 - General Introduction
This product is a complete Temperature Monitoring Channel for the Bently Nevada 3500 Machinery Protection System. It is designed for continuous monitoring of multiple bearing temperatures, typically using Resistance Temperature Detectors (RTDs), and provides critical alarms to prevent equipment damage due to overheating.
3500/61: This is the Temperature Monitor Module. It is a multi-channel module that accepts input from multiple RTDs (commonly 2, 4, 6, or 8 channels per module, depending on the variant).
163179-02: This is the specific hardware part number for the 3500/61 module. The "-02" suffix indicates a particular revision or configuration (e.g., number of channels, firmware version).
136711-02: This is a pre-fabricated, multi-conductor field termination cable assembly specifically designed to connect the RTD sensors in the field to the 3500/61 module's terminal block.
Detailed Parameters
| Parameter Category | Specification | Details / Notes |
|---|---|---|
| System Function | Multi-Point RTD Temperature Monitoring | Primarily for bearing metal temperature, but also used for lube oil, cooling water, and winding temperatures. |
| Monitor Module (3500/61) | ||
| Module Type | 3500/61 - Temperature Monitor | Typically a single-slot or double-slot module (depends on channel count). Common variants: 3500/61M (6-channel) or 3500/61N (12-channel). |
| Module Dimensions | H: 318.0 mm W: 20 mm (1-slot) or 40 mm (2-slot) D: 193.0 mm | Standard 3500 module size. |
| Module Weight | Approx. 0.5 - 0.8 kg | |
| Input Channels | Multiple (e.g., 6 or 12) isolated RTD channels. | Each channel accepts a 100 Ω Platinum RTD (Pt100) sensor, conforming to DIN/IEC 60751 standard (Alpha = 0.00385 Ω/Ω/°C). |
| Measurement Range | Typically -50°C to +250°C (wider range possible). | Fully configurable per channel. |
| Measurement Accuracy | High accuracy (±0.5°C typical) with built-in lead resistance compensation (3-wire or 4-wire RTD connection). | |
| Alarm Outputs | Two programmable relay outputs per channel (Alert, Danger). One OK relay per channel. | Relays can be set for absolute temperature or rate-of-rise alarms. OK relay indicates sensor health (open/short circuit detection). |
| Analog Outputs | One 4-20 mA output per channel (proportional to temperature). | For trending in DCS/PLC systems. |
| Field Termination Cable (136711-02) | ||
| Cable Type | Multi-pair, shielded, twisted pair cable. | Each RTD channel uses a dedicated pair (or triple/quad for 3/4-wire) within the overall cable bundle. Provides excellent noise immunity. |
| Cable Length | Defined by "-02" suffix (e.g., 10m, 15m, 20m). | Standard factory length, cut to specification. |
| Connectors | Module End: A single, keyed connector that plugs directly into the 3500/61's front or top terminal interface. Field End: Individual, labeled, stripped and tinned wire leads or terminal ferrules for connection to RTD head assemblies. | Simplifies wiring, reduces installation errors, and ensures a reliable connection. |
| Cable Jacket | Oil-resistant PVC or LSZH (Low Smoke Zero Halogen). | Suitable for industrial cable trays and harsh environments. |
| RTD Sensor (Not included, but implied) | **100 Ω Platinum RTD (Pt100), typically with a stainless steel housing and a spring-loaded tip for bearing insert applications. | Industry-standard sensor for machinery temperature. |
Primary Application Scenarios
This system is the primary defense against bearing failures caused by inadequate lubrication, overload, or cooling system failure.
Turbine & Compressor Bearing Protection:
Critical Safety Function: Continuously monitors the temperature of every main and thrust bearing on gas/steam turbines and centrifugal compressors. A Danger high-temperature alarm typically initiates a unit trip to prevent catastrophic bearing wipe and shaft damage.
Large Electric Motor & Generator Bearing Monitoring:
Installed on drive and non-drive end bearings of critical motors (e.g., boiler feed pump motors, induced draft fans). Provides early warning of lubrication failure or bearing degradation.
Gearbox Bearing & Oil Sump Temperature:
Monitors temperatures at multiple points on high-speed gearboxes used in compressor or pump trains. Can also monitor the gear oil sump temperature.
Paper Machine & Rolling Mill Roll Neck Bearings:
Protects the large, expensive bearings supporting rolls in paper machines and steel mills, where overheating can lead to significant production loss and bearing damage.
Integrated Machine Health & Process Control:
The 4-20 mA outputs feed into the plant DCS for trending and logging. The relay outputs can be used for automatic auxiliaries start-up (e.g., starting a backup lube oil pump on an Alert, or initiating a coast-down sequence on a Danger alarm).
Global direct procurement guarantee
All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
Why do so many customers choose us?
On the basis of the same quality, we provide:
- More competitive price system
- Faster logistics response
- More complete technical support (free product technical documentation)
Your trust is the driving force for our continuous progress, submit your requirements immediately to get exclusive quotes
