Bently Nevada 133827-01 I/O Module | Six-Channel RTD and Thermocouple Input Card

Brand Bently Nevada

Model Bently 133827-01

Product Overview

The Bently Nevada 133827-01 is a specialized RTD/TC Non-Isolated I/O Module engineered for the 3500 Series machinery protection system, serving as the critical interface between field temperature transducers and the 3500/60 Temperature Monitor. As a genuine Bently Nevada component, the 133827-01 enables six channels of independent temperature measurement, accepting both Resistance Temperature Detector (RTD) and Thermocouple (TC) inputs to monitor bearing temperatures, process temperatures, and thermal conditions across critical rotating machinery.

Positioned as a rear-mounted I/O module with external terminations, the 133827-01 provides accessible wiring points for simplified installation and maintenance in 3500 racks. This configuration is specifically designed for applications where field wiring connects to an external termination block, offering flexibility for retrofit projects and installations requiring accessible connection points. When paired with the 3500/60 Temperature Monitor front card (163179-01), the 133827-01 forms a complete temperature monitoring channel capable of comparing input signals against user-programmable alarm setpoints.

The 133827-01 operates as a non-isolated module, providing a cost-effective solution for applications where ground loop isolation is not required. Its high input impedance of 10 MΩ per lead ensures minimal signal loading while maintaining measurement accuracy across all six channels. Whether monitoring thrust bearing temperatures on a steam turbine, stator winding temperatures on a large motor, or process temperatures in a petrochemical reactor, the 133827-01 delivers the precision and reliability that Bently Nevada machinery protection systems are known for worldwide.

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	133827-01
Manufacturer	Bently Nevada
Product Type	RTD/TC Non-Isolated I/O Module
Compatible Monitor	3500/60 Temperature Monitor (163179-01)
Input Channels	1 to 6 RTD or TC signals
Input Impedance	Greater than 10 MΩ per lead
RTD Current Source	925 ±15 µA per transducer
Recorder Output	4 to 20 mA per channel
Voltage Compliance	0 to +12 Vdc across load
Resolution	0.3662 µA per bit
Operating Temperature	-30°C to +65°C
Storage Temperature	-40°C to +85°C
Dimensions	241.3 mm H × 24.4 mm W × 99.1 mm D
Weight	0.45 kg
Rack Space	1 full-height rear slot
Power Consumption	7 watts nominal

Main Features and Advantages

Dual RTD and Thermocouple Compatibility: The 133827-01 accepts both Resistance Temperature Detector (RTD) and Thermocouple (TC) inputs on any of its six channels, providing exceptional flexibility for mixed sensor installations. This dual compatibility eliminates the need for separate I/O modules when a system employs different temperature sensor types across various measurement points. The module conditions these disparate input signals into standardized outputs, enabling the 3500/60 monitor to compare all channels against user-programmable alarm setpoints with consistent accuracy.

High-Impedance Input Design for Signal Integrity: With input impedance exceeding 10 MΩ per lead, the 133827-01 ensures minimal loading of temperature transducer signals, preserving measurement accuracy even when long field wiring runs introduce additional resistance. This high impedance design is particularly valuable in large plants where sensors may be located hundreds of meters from the monitoring rack. The 133827-01 maintains measurement precision across all six channels, with a resolution of 0.3662 µA per bit and ±0.15% error at room temperature.

External Terminations for Simplified Installation: The 133827-01 features external termination configuration, providing accessible screw terminal connections at the rear of the 3500 rack. This design simplifies field wiring and troubleshooting compared to internal termination modules, making the 133827-01 ideal for retrofit projects, phased installations, and applications where maintenance accessibility is prioritized. The external termination architecture also enables pre-wiring of field cables before module insertion, reducing commissioning time and minimizing the risk of connector damage.

Proven 3500 Series Integration: As a native component of the Bently Nevada 3500 machinery protection system, the 133827-01 integrates seamlessly with the 3500/60 Temperature Monitor and the broader 3500 rack architecture. The module occupies a single full-height rear slot and communicates with the monitor card through the rack backplane, requiring no additional configuration beyond standard 3500 Rack Configuration Software setup. This tight integration ensures reliable operation and simplifies spare parts management for facilities already invested in the Bently Nevada protection ecosystem.