Description
BENTLY NEVADA 3500/61 133811-02 Temperature Monitoring Module
1. Product Description
The BENTLY NEVADA 3500/61 133811-02 is a six-channel temperature monitoring module designed for industrial machinery health management. As part of the BENTLY 3500 Series, it supports both Resistance Temperature Detector (RTD) and Thermocouple (TC) inputs, enabling precise temperature measurements in critical rotating equipment such as turbines, compressors, and pumps. The module integrates with the 3500 Rack Configuration Software for configurable alarm thresholds, trending, and data logging. Its dual-channel redundancy and advanced signal conditioning ensure reliable performance in harsh environments, aligning with API 670 and ISO 10816 standards.
The BENTLY NEVADA 3500/61 133811-02 is a six-channel temperature monitoring module designed for industrial machinery health management. As part of the BENTLY 3500 Series, it supports both Resistance Temperature Detector (RTD) and Thermocouple (TC) inputs, enabling precise temperature measurements in critical rotating equipment such as turbines, compressors, and pumps. The module integrates with the 3500 Rack Configuration Software for configurable alarm thresholds, trending, and data logging. Its dual-channel redundancy and advanced signal conditioning ensure reliable performance in harsh environments, aligning with API 670 and ISO 10816 standards.
2. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/61 133811-02 |
| Input Type | RTD (2/3/4-wire) or TC (J, K, T, E, R, S, B) |
| Channels | 6 (simultaneous monitoring) |
| Voltage Range | 100–240 VAC (via 3500 Rack) |
| Power Consumption | 9 W (nominal) |
| Temperature Range | -30°C to +65°C (module), -200°C to +1370°C (sensor-dependent) |
| Resolution | 0.1°C (RTD), 0.1°C (TC) |
| Outputs | 4–20 mA analog per channel, relay contacts (5 A max) |
| Isolation | 250 VDC (TC isolated version) |
| Dimensions | 241 mm × 24 mm × 254 mm |
| Weight | 0.82 kg |
BENTLY 3500/61
3. Advantages and Features
- Multi-Channel Flexibility: Simultaneously monitor up to six temperature points with mixed RTD/TC inputs.
- ISO/API Compliance: Direct support for ISO 10816 vibration severity and API 670 safety system requirements.
- Isolated Protection: 250 VDC channel-to-channel isolation prevents external interference in noisy environments.
- Predictive Maintenance: Real-time trending and alarm thresholds reduce unplanned downtime.
- Rack Integration: Hot-swappable design allows module replacement without system shutdown.
4. Application Areas and Use Cases
Industry Applications:
Industry Applications:
- Power Generation: Steam turbine bearing temperatures.
- Oil & Gas: Pump motor windings and compressor seals.
- Manufacturing: Extruder barrel temperature control.
Case Study: A chemical plant reduced maintenance costs by 20% using the 3500/61 to monitor reactor jacket temperatures. Early detection of thermal runaway via configurable alarms prevented equipment damage.
5. Competitor Comparison
- Mixed Input Support: Unique ability to handle both RTD and TC inputs on the same module, unlike competitors requiring separate units.
- Software Integration: Native compatibility with BENTLY’s 3500 Series software for unified data management.
- Space Efficiency: Six channels in a single module reduces rack space compared to multi-module alternatives.
BENTLY 3500/61
6. Selection Recommendations
- Sensor Type: Choose RTD for stable, long-term measurements or TC for rapid temperature changes.
- Isolation Needs: Opt for the TC isolated version in high-voltage environments.
- Redundancy: Use triple modular redundancy (TMR) for safety-critical applications requiring zero downtime.
7. Precautions
- Sensor Installation: Ensure proper grounding and shielded cables to avoid EMI.
- Calibration: Verify sensor accuracy annually using BENTLY’s 3500/05 Calibration Interface.
- Power Management: Maintain stable AC supply to prevent voltage fluctuations affecting measurements.
