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Bently Nevada 133835-02 3500 Series TC Isolated I/O Module

The Bently Nevada 133835-02, also cataloged as the 133835-02 TC Isolated I/O Module, operates as a dedicated hardware component for thermocouple signal acquisition and conditioning within the Bently Nevada 3500 Series Machinery Protection System.

Hardware Specifications

Parameter	Specification
Model	133835-02
Brand	Bently Nevada
Product Type	TC Isolated I/O Module with Internal Terminations
Associated Monitor	3500/61 and 3500/60 Temperature Monitor Modules
Origin	USA
Weight	Approx. 0.45 kg
Dimensions	241.3 mm x 24.4 mm x 99.1 mm
Operating Temp	-30 deg C to +65 deg C
Storage Temp	-40 deg C to +85 deg C
Humidity	95% non-condensing
Power Consumption	Supplied through 3500 rack backplane
Input Channels	6 thermocouple input channels
Isolation Voltage	250 VDC channel-to-channel galvanic isolation
Termination Type	Internal terminal block connections
Supported Sensors	Type J, Type K, Type E, Type T thermocouples
Rack Installation	One full-height rear I/O slot in 3500 chassis

Eddy-Current Signal Integrity and Temperature Monitoring Interface

The Bently Nevada 3500 platform is designed for machinery condition monitoring applications where accurate sensor input processing is required. The 133835-02 provides isolated thermocouple signal paths to the 3500/61 Temperature Monitor, maintaining separation between measurement channels and reducing electrical interference from industrial field wiring.

The isolated input architecture supports stable temperature acquisition in environments with potential ground potential differences. Channel-to-channel isolation prevents unwanted signal interaction between thermocouple circuits and supports consistent cold junction compensation processing through the associated temperature monitor module.

Frequently Asked Questions

Q: Is the 133835-02 a standalone temperature monitor?
A: No. The 133835-02 is a rear I/O module and requires installation with a compatible Bently Nevada 3500/60 or 3500/61 Temperature Monitor module for signal processing and alarm functions.

Q: How are thermocouple field wires connected to this module?
A: The module uses internal terminations. Field thermocouple wiring connects directly to the terminal strip located on the I/O module.

Q: Does the module provide electrical isolation between thermocouple channels?
A: Yes. The 133835-02 provides 250 VDC channel-to-channel galvanic isolation for the thermocouple input circuits.

Field Installation Guidelines

Install the 133835-02 in the designated rear I/O position of a Bently Nevada 3500 rack configured with a compatible temperature monitoring module.

Field thermocouple wiring should be routed separately from high-voltage power cables and high-current switching circuits to minimize electrical noise coupling. Use appropriate shield termination practices according to the plant grounding standard.

Verify thermocouple polarity before connection. Incorrect polarity may result in reversed temperature indications or abnormal measurement behavior.

Confirm rack configuration settings match the installed thermocouple type, including sensor type selection and channel configuration, before placing the monitoring system into service.

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