Product Overview

The Bently Nevada 3500/60-01-05 (Part Number 136711-01) is a high-integrity Temperature I/O Module designed for the 3500 Series Machinery Protection System. This specialized interface card allows the 3500/60 Thermal Monitor to accept direct inputs from Resistance Temperature Detectors (RTDs) and Thermocouples (TCs). Unique to this configuration, the module features integrated internal safety barriers and internal terminations, enabling direct wiring of temperature sensors located in hazardous areas without the need for external zener barriers or termination blocks. By providing continuous surveillance of bearing temperatures, winding heats, and process fluids, the 136711-01 ensures that critical machinery operates within safe thermal limits to prevent catastrophic mechanical failure.

Hardware Parameters and Key Technical Characteristics

Engineered for high-density thermal monitoring, the 136711-01 combines laboratory-grade accuracy with industrial-strength safety features.

• Model Number 3500/60-01-05

• Order Number 136711-01

• Module Type RTD/TC I/O Module with Internal Barriers

• Input Capability Supports 6 channels of temperature input per module

• Sensor Support 3-wire RTDs (Platinum, Copper, Nickel) and Type E, J, K, T, and S Thermocouples

• Termination Style Internal Terminations (IT) for direct screw-terminal field wiring

• Intrinsically Safe Features Integrated internal barriers for sensor leads entering Class I, Div 1 or Zone 0/1 areas

• Accuracy Precise cold-junction compensation for TCs and lead-wire compensation for RTDs

• Isolation 500 Vdc galvanic isolation between channels and from rack logic

• Operating Temperature -30°C to +65°C (-22°F to +150°F)

• Weight 0.92 kg

• Dimensions 2.5 x 18.5 x 24.2 cm

Industrial Applications and Operational Use Cases

The 3500/60-01-05 is a fundamental component for Turbine Supervisory Instrumentation (TSI) in facilities prioritizing safety and footprint efficiency.

• Bearing Temperature Monitoring Tracking the temperature of radial and thrust bearings in steam turbines and centrifugal compressors to detect lubrication failure or overloading.

• Motor Winding Protection Monitoring the internal stator windings of high-voltage electric motors to prevent insulation breakdown due to overheating.

• Hazardous Area Sensing Ideal for oil and gas refineries where temperature probes are installed in explosive atmospheres, utilizing the internal barriers to simplify wiring.

• Gas Turbine Exhaust Trending Monitoring exhaust gas temperatures (EGT) via thermocouples to ensure balanced combustion and turbine blade integrity.

• Pump and Gearbox Surveillance Continuous thermal tracking in high-speed pump sets and power transmission gearboxes in chemical processing plants.

By integrating the 136711-01 into a 3500 rack, operators gain a consolidated view of both vibration and temperature data, allowing for advanced cross-channel diagnostics and automated machinery trip logic.