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Bently Nevada

Bently Nevada 3500/65 172103-01 RTD/TC I/O Module with Internal Terminations

SKU 3500/65 172103-01

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12-month warranty
Free returns within 30 days

Manufacturer: Bently Nevada
Product No.: 3500/65 172103-01
Origin United States
Product Type: RTD/TC I/O Module
Payment: T/T, Western Union
Weight: 0.45 kg
Dimensions: 241.3 mm x 24.4 mm x 99.1 mm
Shipping port: Xiamen
Warranty: 12 months

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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Product Description

Description

The Bently Nevada 3500/65 172103-01 (PWA 184522-01) is an internal termination rear I/O module designed for the 3500/65 16-Channel Temperature Monitor system. Installed in the rear slot of a standard 3500 machinery protection rack, it provides the physical interface for connecting up to 16 resistance temperature detectors (RTDs) or isolated tip thermocouples (TCs). The module processes incoming transducer signals and routes them directly to the main 3500/65 front monitor for continuous thermal monitoring and setpoint evaluation.

Engineered to support critical industrial machinery protection, the 172103-01 accepts a wide variety of standard sensor types, including 3-wire RTDs, 4-wire RTDs, and Types E, J, K, and T thermocouples. Integrated internal termination headers streamline panel wiring by allowing field sensor leads to attach directly to the module without requiring external termination blocks or intermediate cabling assemblies.

Features

16-Channel Capacity: Supports up to 16 independent RTD or isolated tip thermocouple transducer signals on a single rear I/O card.
Internal Termination Design: Features on-board 20-position terminal headers for direct field wiring, eliminating the need for external termination hardware.
Broad Sensor Compatibility: Accepts 100 ohm Platinum (alpha = 0.00385 and 0.00392), 120 ohm Nickel, and 10 ohm Copper RTDs, as well as Type E, J, K, and T thermocouples.
Cold Junction Compensation: Includes built-in cold junction compensation sensors for precise thermocouple temperature measurement accuracy.
Hot-Swappable Rack Integration: Connects directly into the rear full-height slot of a standard Bently Nevada 3500 rack interface backplane.

Applications

Thermal monitoring of motor, generator, and turbine bearing temperatures.
Real-time monitoring of gas turbine exhaust gas temperatures (EGT) and compressor discharge temperatures.
Gearbox casing, sump, and lube oil temperature monitoring in critical rotating machinery.
Process temperature integration within 3500 Machinery Protection Systems (MPS).

Ordering Information

Option Code	Description
3500/65-01-XX	3500/65 Temperature Monitor with RTD/Isolated Tip TC I/O Module with Internal Terminations (172103-01)
3500/65-02-XX	3500/65 Temperature Monitor with RTD/Isolated Tip TC I/O Module with External Terminations (172109-01)
3500/65-00-XX	3500/65 Temperature Monitor without I/O Module

Technical Specifications

General

Parameter	Specification
Manufacturer	Bently Nevada (a Baker Hughes business)
Main Monitor Part Number	3500/65
I/O Module Part Number	172103-01
Printed Wiring Assembly (PWA)	184522-01
Rack Space Requirement	1 full-height rear slot

Input Capabilities

Parameter	Specification
Signal Inputs	1 to 16 RTD or isolated tip TC transducer signals
Input Impedance	Greater than 1 Mohm for each lead input
Thermocouple Types	Type E (-100 degC to +1000 degC), Type J (0 degC to +760 degC), Type K (0 degC to +1370 degC), Type T (-160 degC to +400 degC)
RTD Types	100 ohm 3-wire and 4-wire Platinum (alpha = 0.00385 or 0.00392), 120 ohm 3-wire and 4-wire Nickel, 10 ohm 3-wire and 4-wire Copper
Current Source Value	913 microamps +/- 7 microamps at +25 degC per transducer

Performance & Accuracy

Parameter	Specification
Measurement Accuracy	Standard Rack: +/-3 degC at +25 degC (+/-5.4 degF at +77 degF)
Cold Junction Compensation Sensor	+/-2 degC at +25 degC (+/-3.6 degF at +77 degF)
Resolution	1 degC or 1 degF

Environmental & Physical

Parameter	Specification
Operating Temperature	-30 degC to +65 degC (-22 degF to +150 degF)
Storage Temperature	-40 degC to +85 degC (-40 degF to +185 degF)
Dimensions (H x W x D)	241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
Weight	0.45 kg (1.0 lbs)

Connections / Interfaces

Interface	Function
20-Position Terminal Headers	On-board internal screw terminals for field RTD and TC signal lead connections
Backplane Edge Connector	Interface connector for internal signal pass-through to the front 3500/65 monitor module

Installation Guidelines

Confirm that the rack power is switched off or follow hot-swap procedures per local plant safety guidelines.
Align the 172103-01 I/O module with the rear full-height slot directly behind the corresponding 3500/65 front monitor.
Slide the module into the rack guide rails until the backplane connectors fully engage.
Tighten the top and bottom securing thumb screws to ensure proper chassis grounding.
Wire the RTD or TC sensor leads to the internal 20-position terminal headers following the channel assignment diagram in the manual.
Verify signal lead integrity and ensure shield drain wires are properly grounded according to system installation drawings.

Configuration / Commissioning / Replacement

Firmware Compatibility: When replacing an older revision I/O module with revision 172103-01 Rev F or higher, ensure the front 3500/65 monitor is updated to the latest compatible firmware version.
Firmware Update Sequence: You must physically remove the I/O module from the rack before upgrading the 3500/65 monitor firmware. Failure to remove the I/O module during the upgrade will result in an "I/O Module Mismatch" and "562 ADC Failure" error in the System Event List.
Software Configuration: Channel types (RTD vs TC), range limits, and alarm setpoints must be configured using 3500 Rack Configuration Software (Version 3.85 or later).

Compliance and Certifications

Certification / Standard	Detail
Electromagnetic Compatibility (EMC)	EN 61000-6-2, EN 61000-6-4, Directive 2014/30/EU
Electrical Safety	EN 61010-1, Low Voltage Directive 2014/35/EU
Hazardous Area Approvals	CSA/NRTL/C Class I, Division 2 (Groups A, B, C, D); ATEX/IECEx Zone 2 (Ex nA nC ic IIC T4 Gc / Ex ec nC ic IIC T4/T5 Gc)
Functional Safety	SIL 2 rated
Maritime Approvals	DNV GL, ABS

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What is the function of the Bently Nevada 172103-01 module?

The 172103-01 is an internal termination rear I/O module for the 3500/65 16-Channel Temperature Monitor. It routes up to 16 field RTD or thermocouple sensor signals directly into the 3500 system rack for processing and alarm monitoring.

What sensor types are supported by the 172103-01 I/O card?

The module supports 3-wire and 4-wire RTDs (including 100 ohm Platinum, 120 ohm Nickel, and 10 ohm Copper) as well as isolated tip thermocouples of Types E, J, K, and T.

What is the difference between I/O modules 172103-01 and 172109-01?

The 172103-01 module features internal screw terminal headers for direct wiring at the back of the rack. The 172109-01 is an external termination version that requires separate external termination blocks and multi-conductor cables.

Why does the System Event List display '562 ADC Failure' after replacing this module?

An 'I/O Module Mismatch' or '562 ADC Failure' occurs if the 3500/65 front monitor firmware is not upgraded to match newer I/O module hardware revisions, or if the I/O module was not physically disconnected prior to executing a monitor firmware upgrade.

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