BENTLY 3500/22M 138607-01

Description

Detailed parameter table

BENTLY 3500/22M 138607-01

Product introduction

The Bently Nevada 3500/22M 138607-01 is a high-precision multi-channel temperature monitoring module, engineered to deliver exceptional accuracy for critical industrial applications. As an enhanced variant of the standard 3500/22M, this model (138607-01) incorporates advanced surge protection and expanded communication capabilities, making it the ideal choice for monitoring high-value assets such as gas turbines, large compressors, and nuclear power plant equipment—where even minor temperature deviations can signal catastrophic failures.

Unlike the entry-level 3500/22-01-01-00, which focuses on basic temperature tracking, the 3500/22M 138607-01 is designed for deep integration with predictive maintenance systems. It works seamlessly with the 3500/44M 176449-03 dynamic signal analyzer, providing thermal data that correlates with vibration patterns to identify complex fault conditions—such as bearing degradation caused by overheating, which would be missed by temperature-only or vibration-only monitoring.

Powered by the 3500/91 190782-01 redundant power supply, this module ensures uninterrupted operation in safety-critical environments. Its rugged design and extended measurement ranges make it suitable for extreme conditions, from cryogenic applications (-200°C) to high-temperature industrial furnaces (+1820°C), while its compatibility with diverse sensor types ensures flexibility across industries.

Core advantages and technical highlights

Laboratory-grade measurement accuracy: The 3500/22M 138607-01 achieves ±0.1°C accuracy with RTDs (over -50°C to +250°C), outperforming the 3500/22-01-01-00’s ±0.5°C. This precision allows it to detect subtle thermal trends—such as a 0.3°C per hour rise in a turbine bearing—months before failure, enabling proactive maintenance. For thermocouples, its ±0.3°C accuracy (0°C to +1000°C) ensures reliable monitoring of exhaust gas temperatures in gas turbines.

Advanced surge protection: Unique to the 138607-01 variant, each input channel features 2kV surge protection, safeguarding against electrical transients common in industrial environments. This is critical for installations near high-voltage equipment or lightning-prone areas, preventing sensor damage and data loss—a feature absent in the 3500/22-01-01-00.

Expanded connectivity: Equipped with RS-485 in addition to backplane communication, the module supports remote configuration and real-time data streaming to SCADA systems. This enables centralized monitoring of temperature trends across multiple assets, a capability beyond the basic backplane-only communication of the 3500/22-01-01-00.

Comprehensive sensor support: With 8 channels accepting 7 thermocouple types (including high-temperature Type B for 1820°C measurements) and 3 RTD variants, the 3500/22M 138607-01 covers a broader range of applications than the 3500/22-01-01-00 (limited to PT100, Type K/J). This versatility eliminates the need for multiple specialized modules in complex systems.

Comparison with 3500/22-01-01-00

BENTLY 3500/22M 138607-01

Typical application scenarios

In a combined-cycle power plant, the 3500/22M 138607-01 monitors 8 critical points on a gas turbine: 4 bearing temperatures (PT100 RTDs), 2 exhaust gas temperatures (Type R thermocouples), and 2 lube oil temperatures (4-20 mA transmitters). Paired with the 3500/44M 176449-03 and 3500/53M controller, it detects a 0.2°C/hour rise in bearing temperature correlated with increasing vibration at 3x rotational frequency—indicating incipient bearing failure. The 3500/60 triggers a planned shutdown, avoiding a $1M+ unplanned outage.

At a nuclear power plant, the module monitors reactor coolant temperatures (Type K thermocouples) and generator stator temperatures (PT1000 RTDs). Its surge protection safeguards against electrical transients from the reactor’s power system, while its ±0.1°C accuracy ensures compliance with safety regulations requiring precise temperature control. Data is streamed via RS-485 to the plant’s DCS, enabling 24/7 remote monitoring.

In an aerospace manufacturing facility, the 3500/22M 138607-01 tracks temperatures in a high-temperature furnace (Type B thermocouples, up to 1800°C) and cryogenic cooling systems (PT100 RTDs, -196°C). Its broad range and accuracy ensure precise heat treatment of turbine blades, while integration with the 3500/53M controller prevents furnace overheating via the 3500/60—protecting $100k+ components from damage.

Related model recommendations

3500/22-01-01-00: Entry-level temperature module that complements the 3500/22M 138607-01 in hybrid systems (critical + non-critical assets).

3500/44M 176449-03: Dynamic signal analyzer whose vibration data correlates with temperature readings for advanced fault detection.

3500/53M: Advanced controller that integrates data from both modules for complex alarm logic.

3500/91 190782-01: Redundant power supply ensuring uninterrupted operation in safety-critical applications.

3500/60: Digital output module that executes protective actions based on temperature-vibration fault conditions.

Type B Thermocouples: High-temperature sensors ideal for the module’s extended range (+1820°C).

170180-01-00 software (v7.0+): Tool for configuring advanced features like surge protection settings and data logging intervals.

Installation, commissioning and maintenance instructions

Installation preparation: Mount the 3500/22M 138607-01 in 2 consecutive slots of the 3500 rack, adjacent to the 3500/44M 176449-03 for synchronized data capture. Power off via the 3500/91 190782-01 before installation. Secure with screws torqued to 0.6 Nm, verifying backplane alignment. Connect sensors using shielded cables: RTDs require 4-wire connections (to eliminate lead resistance), while thermocouples use mineral-insulated cables for high-temperature applications.

Commissioning steps: Power on via the 3500/91 190782-01 and confirm all channel LEDs illuminate green. Use 170180-01-00 software to configure sensor types, measurement ranges, and alarm thresholds (e.g., “Turbine bearing: Warning at 90°C, Danger at 100°C”). Calibrate using a NIST-traceable temperature calibrator, verifying accuracy at 3 points across the operating range. Test surge protection by applying a 2kV transient (per IEC 61000-4-5) and confirming no data loss. Validate communication with the 3500/53M by checking that temperature data appears alongside vibration spectra from the 3500/44M 176449-03.

Maintenance suggestions: Inspect quarterly, checking terminal blocks for corrosion and verifying surge protection integrity with a megohmmeter. Calibrate semi-annually using a precision bath/calibrator—adjust via software if drift exceeds ±0.2°C. For thermocouple channels, replace extension wires annually to maintain accuracy. Update firmware quarterly via RS-485 to access new diagnostic features. Unlike the 3500/22-01-01-00, schedule annual maintenance by Bently-certified technicians for safety-critical installations.

Service and guarantee commitment

The 3500/22M 138607-01 is backed by a 30-month warranty (extended from the 3500/22-01-01-00’s 24 months) covering manufacturing defects, including accuracy drift, surge protection failures, or communication issues. During this period, Bently provides free repair/replacement and dedicated technical support for configuring advanced features.

Our critical systems team offers 24/7 remote diagnostics via RS-485, analyzing temperature trends to help predict failures. Extended warranty options (up to 5 years) include annual calibration, surge protection testing, and priority on-site support. Built on Bently’s legacy of precision monitoring, this module guarantees the reliable temperature data needed to protect high-value assets and ensure operational safety.