Description
Bently Nevada 3500/60-01-00 (133811-01)
Technical Specifications:
- Channels: Six independent temperature monitoring channels
- Signal Inputs: RTD (Pt100, 2-wire or 3-wire); Thermocouples (Types J, K, T, E, R, S, B, N) with onboard Cold Junction Compensation (CJC)
- Alarm Setpoints: Per-channel Alert and Danger thresholds, programmable via 3500 configuration software
- Communication: Via 3500 backplane; data accessible through 3500/22M TDI over Ethernet
- Power Requirements: Powered from the 3500 rack backplane; no external power required
- Operating Temperature: -30°C to +65°C
- Storage Temperature: -40°C to +85°C
- Dimensions (H × W × D): 241.3 mm × 24.4 mm × 241.8 mm
- Weight: 0.91 kg
Functional Features:
- High-density multi-channel temperature monitoring consolidates bearing, casing, winding, and lube oil measurements in one module
- Supports mixing RTD and thermocouple sensor types across channels
- Integrated per-channel Alert/Danger alarm processing with latching options
- Onboard Cold Junction Compensation eliminates the need for external CJC hardware
- Works with 3500 system relay modules for logic, voting, and shutdown circuits per API 670 protection schemes
- System 1 connectivity via TDI for historical trending, audit trails, and event capture
- Front-accessible module replacement with rear I/O module retaining field wiring
Application Scenarios:
- API 670 machine trains: bearing metal temperatures on compressors, turbines, and large pumps
- Generators and motors: stator RTDs, winding hot-spots, and bearing housings
- Gas turbines and turboexpanders: exhaust or casing thermocouples for thermal gradient tracking
- Lube and seal systems: oil supply/return temperatures tied into trip logic
- Refining, petrochemical, and LNG facilities with mixed RTD/TC panels
Performance Parameters:
- Measurement Accuracy: ±1°C at 25°C (standard rack); ±3°C at 25°C (blind-head rack)
- Input Impedance: Greater than 10 MΩ per lead input
- Power Consumption: 9 Watts
Material Composition: Industrial-grade electronic components housed in a standard 3500 rack module enclosure with front-accessible connector interface
Structural Features: Single-slot front plug-in monitor paired with matching rear I/O module (133811-01). The module occupies one 3500 rack slot and connects to field sensors through the rear I/O terminal block.
Working Principle: The module conditions RTD and thermocouple input signals, converts them to digital temperature values, and compares them against user-programmable Alert and Danger setpoints. When a channel exceeds a configured threshold, the module triggers the corresponding alarm output. In TMR (Triple Modular Redundancy) configuration, three modules are installed side by side and the system employs two types of voting to ensure accurate operation and avoid single-point failures.
Installation Requirements:
- Install in a Bently 3500 rack within an IP-rated cabinet
- Provide clean, dry air circulation; avoid heat sources and EMI
- Land sensors on the 133811-01 rear I/O module
- Maintain polarity and wire type for thermocouples
- Use shielded cables with proper grounding
- Avoid mixing thermocouple extension wire types
Usage Notes:
- De-energize circuits before servicing
- Observe ESD handling procedures for module swaps
- Verify readings against a reference annually or per site policy
- Check terminal tightness, clean dust, and review event logs regularly
- Firmware updates are managed through the TDI
- The 3500/60 does not provide 4-20 mA recorder outputs; select the 3500/61 if recorder outputs are required
