Bently Nevada 135613-01 Case Expansion Transducer

Product Details

135613-01 Product Description

The Bently Nevada 135613-01 is a precision-engineered Case Expansion Transducer designed for seamless integration within the 3500 Series Machinery Protection System. As a critical sensing element in rotating machinery monitoring architectures, the 135613-01 delivers reliable differential expansion measurements that feed directly into the 3500 rack's condition monitoring and protection logic. Its role extends beyond simple measurement — it serves as a foundational data source for system-wide diagnostics, alarm management, and predictive maintenance workflows across complex industrial control environments.

In modern industrial facilities — spanning power generation, petrochemical processing, oil & gas compression, and heavy manufacturing — the ability to monitor case expansion with high accuracy is essential for turbine and compressor protection. The 135613-01 integrates directly with the 3500/42M Proximitor/Seismic Monitor and the 3500/44M Aeroderivative Turbine Monitor, enabling coordinated protection responses across the full machinery train. When paired with the 3500/20 Rack Interface Module and the 3500/22M Transient Data Interface, the transducer's output becomes part of a unified data stream that supports both real-time protection and long-term trend analysis.

The 135613-01 Case Expansion Transducer achieves its full value when deployed as part of a coordinated 3500 Series rack architecture. A complete machinery protection system built around this transducer typically includes the 3500/05 Power Supply Module for stable rack power delivery, the 3500/20 Rack Interface Module (RIM) for system-level communication and configuration, and the 3500/22M Transient Data Interface for high-resolution waveform capture during startup and shutdown transients — precisely the operating phases where case expansion monitoring is most critical.

On the monitoring side, the 135613-01 feeds into the 3500/45 Position Monitor or the 3500/42M Proximitor/Seismic Monitor, depending on the specific machinery train configuration. These monitors process the transducer's displacement signal and apply configurable alarm and danger setpoints that trigger protective relay outputs through the 3500/32 4-Channel Relay Module. This relay module interfaces directly with the machine's trip logic, ensuring that abnormal case expansion events result in immediate protective action.

For facilities running integrated DCS environments — such as those using GE Mark VIe, Emerson DeltaV, or Honeywell Experion PKS — the 3500 rack's communication gateway capability allows the 135613-01's processed data to be surfaced at the control room level. Operators gain real-time visibility into case expansion trends alongside other critical parameters such as shaft vibration (monitored via 3500/42M with Proximitor probes), rotor position, and bearing temperature. This multi-parameter view is essential for informed operational decisions during load changes, startups, and planned maintenance windows.

In redundant protection architectures, the 135613-01 can be deployed in dual-transducer configurations, with both channels monitored by the 3500 rack's voting logic. This approach — common in API 670-compliant installations — ensures that a single transducer fault does not result in a spurious trip or, conversely, a missed protection event. The 3500/20 RIM's system event log captures all channel status changes, providing a complete audit trail for maintenance engineers and reliability teams.

The Bently Nevada 135613-01 is deployed across a wide range of heavy industrial sectors where rotating machinery protection is a safety and operational priority:

Power Generation: In gas turbine and steam turbine power plants, case expansion monitoring is a mandatory protection function under API 670 and OEM specifications. The 135613-01 provides the differential expansion signal that protects against blade-to-casing contact during thermal transients, load rejection events, and emergency shutdowns. Its integration with the 3500 rack's relay outputs ensures that protection response times meet the sub-100ms requirements typical of turbine protection systems.

Petrochemical & Refining: Large centrifugal compressors in ethylene, ammonia, and LNG facilities operate under continuous high-load conditions where case expansion monitoring is critical for both equipment protection and process continuity. The 135613-01's stable analog output and compatibility with the 3500 Series architecture make it a standard specification in new compressor train installations and retrofit projects.

Oil & Gas Upstream & Midstream: Pipeline compressor stations and offshore platform gas compression systems rely on the 3500 Series for API 670-compliant protection. The 135613-01 supports both onshore and offshore installation environments, with the 3500 rack providing the communication backbone that connects machinery protection data to the platform's safety instrumented system (SIS) and process control network.

Mining & Minerals Processing: Large grinding mills, fans, and pumps in mining operations increasingly incorporate vibration and position monitoring as part of condition-based maintenance programs. The 135613-01, integrated with the 3500 rack and connected to plant historians via Modbus or OPC-DA, enables maintenance teams to track expansion trends over time and schedule interventions before failures occur.

Marine & Shipboard: Shipboard gas turbine and diesel generator sets in naval and commercial marine applications require compact, reliable protection systems. The 3500 Series' modular architecture and the 135613-01's robust construction support marine-grade installations where space, vibration resistance, and long-term reliability are paramount.

Q1: Is the Bently Nevada 135613-01 compatible with existing 3500 Series racks, and does it require any firmware updates for integration? The 135613-01 is designed for direct compatibility with the 3500 Series rack architecture, including the 3500/45 Position Monitor and 3500/42M monitor modules. No firmware updates are required for standard integration. Configuration is performed via the System 1 software or Rack Configuration Software (RCS), where channel scaling, alarm setpoints, and transducer type are defined. For installations involving the 3500/22M Transient Data Interface, ensure that the RIM firmware version supports the transducer's signal range. NANKMOS provides pre-shipment functional verification for all 135613-01 units, and our technical team can assist with configuration documentation upon request.

Q2: What is the recommended installation and commissioning procedure for the 135613-01 in a turbine protection architecture? Installation follows the Bently Nevada 3500 Series Installation Manual and the specific machinery OEM's transducer mounting specification. The 135613-01 is typically mounted on the turbine casing with a target rod connected to the rotor reference point. Gap voltage calibration is performed at the monitor module using the System 1 software, with the transducer's scale factor entered to convert gap voltage to engineering units (typically mm or mils). Pre-commissioning checks include cable continuity, shield grounding verification, and a static displacement test to confirm signal linearity. NANKMOS supplies all 135613-01 units with a 12-Month Warranty and pre-shipment test records to support commissioning documentation.

Q3: How does NANKMOS ensure long-term supply availability and warranty support for the Bently Nevada 135613-01? NANKMOS maintains dedicated inventory of the 135613-01 and related 3500 Series components to support both planned maintenance and emergency replacement requirements. All units are sourced through verified supply channels and undergo pre-shipment functional testing before dispatch. Each unit is covered by a 12-Month Warranty from the date of shipment, covering manufacturing defects and functional failures under normal operating conditions. For long-term maintenance contracts or bulk procurement, NANKMOS offers priority allocation and expedited global shipping to minimize machinery downtime. Contact [email protected] or +86 18359268345 for availability and lead time confirmation.