Bently Nevada 3500/60 (190085-01L) – Temperature Monitor | 3500 Series Machinery Protection System
Engineering Background
The Bently Nevada 3500 Series is the industry benchmark for continuous online machinery protection in rotating equipment applications. Deployed across power generation, oil & gas, petrochemical, and heavy industrial facilities worldwide, the 3500 platform provides real-time vibration, position, and temperature monitoring with relay-based trip logic. The 3500/60 Temperature Monitor module extends this protection framework to thermal parameters, enabling engineers to detect overheating, thermal runaway, and bearing degradation before catastrophic failure occurs.
Product Positioning
The 3500/60 (Part No. 190085-01L) is a dedicated temperature input module designed for integration into the 3500 rack-based protection system. It accepts thermocouple and RTD inputs, processes temperature data against configurable alarm and trip setpoints, and communicates status to the 3500 rack backplane. This module is the preferred solution for procurement engineers specifying thermal protection on turbines, compressors, pumps, and motors where API 670 compliance is required.
Complete Technical Specifications
| Part Number | 190085-01L |
| Model | 3500/60 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Module Type | Temperature Monitor |
| Platform | 3500 Series Machinery Protection System |
| Input Types | Thermocouple (J, K, T, E, R, S, B) / RTD (Pt100, Pt1000) |
| Number of Channels | Up to 16 temperature input channels per module |
| Measurement Range | –200 °C to +1820 °C (sensor-dependent) |
| Accuracy | ±1 °C typical (RTD); ±2 °C typical (thermocouple) |
| Alarm Setpoints | Configurable Alert / Danger per channel via System 1 software |
| Relay Outputs | Configurable trip relay via 3500 relay module |
| Communication | 3500 rack backplane (proprietary); Modbus RTU / TCP optional |
| Power Supply | Supplied via 3500 rack backplane (24 VDC) |
| Operating Temperature | –20 °C to +65 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 5% to 95% RH, non-condensing |
| Enclosure / Form Factor | 3500 rack-mount module (single-slot) |
| Weight | Approx. 800 g |
| Compliance Standards | API 670, CE, UL, CSA |
| Country of Origin | USA |
Proven Application Environments
- Gas & Steam Turbines: Exhaust temperature monitoring, bearing temperature protection, and inter-stage thermal profiling on GE, Siemens, and MHI turbine trains.
- Centrifugal & Reciprocating Compressors: Suction/discharge temperature trending and motor winding temperature protection in LNG, refinery, and pipeline compression stations.
- Pumps & Motors: Bearing and winding temperature monitoring on boiler feed pumps, cooling water pumps, and large induction motors in power plants.
- Heat Exchangers & Process Equipment: Differential temperature monitoring across tube bundles for fouling detection and process optimization.
- Offshore Platforms: Certified for use in hazardous area installations (with appropriate barriers) on FPSO and fixed-platform rotating equipment.
Engineering Advantages
- API 670 Compliant: Meets the international standard for machinery protection systems, satisfying EPC contractor and end-user specifications without additional qualification testing.
- Multi-Sensor Compatibility: Single module supports both thermocouple and RTD inputs, reducing spare-parts inventory and simplifying system architecture.
- Configurable Alarm Logic: Per-channel Alert and Danger setpoints with latching/non-latching relay options allow precise protection tuning without hardware changes.
- Seamless 3500 Integration: Plug-and-play installation into any 3500 rack; configuration via Bently Nevada System 1 software with no additional wiring adapters required.
- High Channel Density: Up to 16 channels per module minimizes rack space consumption in large machinery trains with multiple temperature measurement points.
- Proven Field Reliability: Deployed in thousands of installations globally with documented MTBF exceeding 100,000 hours in continuous operation.
System Architecture & Signal Flow
The 3500/60 module occupies a single slot in the 3500 rack and interfaces directly with the rack backplane for power and data communication. Field wiring from thermocouples or RTDs connects to the module’s front-panel terminal blocks. The module performs cold-junction compensation (for thermocouples) and linearization internally, then transmits processed temperature values to the 3500 rack’s communication gateway (3500/92 or 3500/93) for SCADA/DCS integration via Modbus or OPC. Alarm and trip relay outputs are routed through the 3500 relay module (3500/32 or 3500/33) to the machine control system.
Signal path: Field sensor → 3500/60 input terminals → Internal A/D conversion & linearization → Backplane data bus → Communication gateway → DCS/SCADA
Sourcing & Quality Verification
All Bently Nevada modules supplied by Konmask.com are sourced through verified industrial surplus and authorized distribution channels. Each unit undergoes the following pre-shipment verification process:
- Visual inspection for physical damage, corrosion, and label integrity
- Part number and revision level verification against Bently Nevada documentation
- Functional power-on test where applicable
- Packaging in anti-static ESD bags with foam cushioning
- Certificate of conformance available upon request
Konmask.com does not supply counterfeit, refurbished-without-disclosure, or untested modules. All units are sold with a 90-day return-to-base warranty against manufacturing defects.
Procurement Process
- Submit RFQ: Contact support@konmask.com or call +0086 19859288691 with your part number, required quantity, and delivery timeline.
- Receive Quotation: Our technical team will confirm availability, lead time, and pricing within 1 business day.
- Place Order: Purchase directly via this product page or via proforma invoice for bank transfer / LC payment.
- Shipment & Documentation: Units ship with packing list, commercial invoice, and optional certificate of conformance. DHL / FedEx express available for urgent requirements.
- Incoming Inspection Support: Our engineers can provide technical documentation and test procedures to support your incoming QC process.
Technical FAQ
Q: Is the 3500/60 (190085-01L) compatible with all 3500 rack configurations?
A: Yes. The 3500/60 is compatible with all standard 3500 rack sizes (3-slot, 7-slot, 14-slot) and requires no special rack configuration. Confirm firmware compatibility with your System 1 software version before installation.
Q: Can this module accept both thermocouple and RTD inputs simultaneously?
A: Channel input type is configured per-channel via software. A single module can be configured with a mix of thermocouple and RTD channels simultaneously.
Q: What is the maximum cable length for sensor wiring?
A: Bently Nevada recommends a maximum of 300 m for thermocouple extension cable and 100 m for RTD 3-wire connections, subject to cable resistance specifications. Consult the 3500/60 Installation Manual (document 190085-01) for detailed wiring guidelines.
Q: Is a System 1 software license required to configure this module?
A: Yes. Configuration of alarm setpoints, channel types, and relay logic requires Bently Nevada System 1 software. Contact your local Baker Hughes representative for licensing options.
Q: Do you offer exchange or repair services?
A: Konmask.com offers exchange programs for select Bently Nevada modules. Contact us with your defective unit’s part number and serial number for evaluation.
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Contact: support@konmask.com | +0086 19859288691
