TSI (Turbomachinery Supervisory Instrumentation) systems monitor and protect rotating equipment. We supply modules, sensors, and spares to support both new and discontinued models. Our solutions help reduce downtime and protect critical assets.
TSI Monitoring Systems
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Emerson Emerson | A6312‑8 | AMS 6500 Series | Dual‑Channel Speed & Key Monitor
Overview The A6312‑8 Dual‑Channel Speed and Key Monitor is a high‑integrity measurement module designed for Emerson’s AMS 6500 machinery protection platform. It provides precise monitoring of shaft rotational speed, phase reference, zero‑speed conditions, and direction of rotation—critical parameters for safeguarding high‑value rotating equipment. This module supports API 670‑compliant protection architectures and integrates seamlessly with other AMS 6500 monitoring cards to form a complete machinery protection system. Key Features Dual‑channel speed and phase (key) monitoring API 670‑compliant machinery protection functionality Supports redundant tachometer configuration with automatic switchover Monitors pulse quality, sensor gap voltage, and signal integrity Detects zero speed, reverse rotation, and phase angle Designed for turbines, compressors, and other high‑speed rotating assets Integrates with AMS 6500 for configuration, trending, and diagnostics Technical Specifications Electrical Characteristics Parameter Specification Model Number A6312‑8 Input Range 0 to ±27.3 VDC Output Capability Max. 6 W, 250 mA at 24 VDC Channels Dual‑channel speed and key monitoring Redundant Mode Supported; automatic switchover based on pulse comparison and gap voltage Sensor Types Displacement probes for speed and phase measurement Environmental Ratings Parameter Specification Operating Temperature Industrial‑rated range Humidity 5–95% RH, non‑condensing Vibration Suitable for high‑vibration rotating machinery environments Shock Industrial‑grade shock tolerance Mechanical Data Parameter Specification Dimensions 40.3 mm × 128.4 mm × 160.0 mm Weight 320 g Mounting AMS 6500 rack system Country of Origin USA Logistics Parameter Specification Condition 100% Brand New Availability In Stock MOQ 1 HS Code 8537101190 Functional Description The A6312‑8 module provides dual‑channel monitoring for both speed and key (phase) signals, enabling detailed assessment of shaft rotational behavior. Speed measurement is performed using a displacement probe aimed at a toothed wheel, gear, or keyway mounted on the shaft. This allows the system to detect zero‑speed conditions, reverse rotation, and real‑time speed changes for process control and protection. Phase (key) measurement uses a once‑per‑revolution target to establish a reference point for vibration analysis, rotor position tracking, and advanced diagnostics. This parameter is essential for identifying changes in machine dynamics, such as rotor instability or developing mechanical faults. In redundant mode, the module automatically switches between primary and backup tachometer sensors if signal degradation is detected. To maintain phase continuity, both sensors must be installed in the same axial plane. The A6312‑8 is a core component of API 670‑compliant protection systems and is widely used in steam turbines, gas turbines, hydro units, and large compressors. Its robust design ensures long‑term reliability in harsh industrial environments. Application Scenarios Speed and phase monitoring for high‑speed rotating machinery API 670‑compliant machinery protection systems Turbines, compressors, and hydro‑mechanical equipment Redundant tachometer installations requiring automatic failover Advanced diagnostics using AMS 6500 machinery health tools FAQ Q: Can the A6312‑8 operate in redundant tachometer mode? A: Yes. It supports automatic switchover based on pulse integrity and sensor gap voltage. Q: What type of sensors are required for phase measurement? A: A once‑per‑revolution displacement probe is required for accurate phase reference. Q: Is this module compatible with the AMS 6500 rack? A: Yes. It is designed specifically for AMS 6500 machinery protection systems.
$200.00 $100.00
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Emerson Emerson A6210 Differential Expansion and Rod Drop Monitor
Overview The Emerson A6210 Dual-channel Monitor is a versatile module designed for high-reliability protection of critical rotating and reciprocating machinery. As part of the CSI 6500 series, this 1-slot unit supports three distinct monitoring modes—thrust position, differential expansion, and rod drop—making it ideal for steam turbines, gas compressors, hydro turbo machines, and reciprocating compressors. Key Features Operates in thrust, differential expansion, or rod drop mode Dual-channel configuration for enhanced signal processing Detects axial shaft movement in <40 ms for thrust protection Supports tandem, complementary, cone, and ramp expansion modes Monitors rider band wear via piston rod displacement Drives alarms and relay outputs based on setpoint thresholds Integrates with Ovation® and DeltaV™ control systems Compatible with AMS Suite for predictive diagnostics Compact 1-slot design for CSI 6500 cabinets Ideal for turbo machinery and reciprocating compressors Technical Specifications Specification Detail Manufacturer Emerson Model Number A6210 Series CSI 6500 Description Dual-channel Thrust, Differential Expansion, and Rod Drop Monitor Input Voltage 0 to -22 VDC Output Voltage 0 to 10 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Type Non-contact displacement sensors
$200.00 $100.00
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Emerson Emerson A6120 Case Seismic Vibration Monitor
Overview The Emerson A6120 Case Seismic Vibration Monitor is a high-reliability, 1-slot module designed for critical rotating machinery in nuclear, steam, gas, and hydro turbine applications. As part of the CSI 6500 series, it integrates seamlessly with other modules to form a complete API 670 machinery protection system. Key Features Monitors case seismic vibration in mm/sec (in/sec) Compatible with electromechanical and piezoelectric sensors Drives alarms and relays based on vibration thresholds Supports predictive diagnostics via AMS Suite Integrates with Ovation® and DeltaV™ control systems Ideal for nuclear and turbo machinery applications Compact 1-slot design for CSI 6500 cabinets Part of PlantWeb® architecture for unified operations Backward-compatible with field-installed sensors Provides velocity output for bearing case vibration analysis Technical Specifications Specification Detail Manufacturer Emerson Model Number A6120 Series CSI 6500 Description Case Seismic Vibration Monitor Input Voltage -5 to +15 VDC Output Voltage 0 to 10 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Compatibility Electromechanical & Piezoelectric
$200.00 $100.00
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Emerson Emerson A6220 Shaft Eccentricity Vibration Monitor
Overview The Emerson A6220 Shaft Eccentricity Vibration Monitor is engineered for high-reliability protection of critical rotating assets. As part of the CSI 6500 series, this 1-slot module integrates seamlessly with AMS 6500 systems to meet API 670 standards for machinery protection. It precisely tracks shaft bowing and bent shaft conditions at speeds below 600 rpm, using non-contact displacement sensors mounted near the thrust bearing. Key Features Monitors shaft eccentricity on large sleeve bearing machines Detects shaft bowing and bent shaft conditions below 600 rpm Uses non-contact displacement sensors with eccentricity collar targets Drives alarms and relay outputs based on vibration thresholds Integrates with AMS 6500, Ovation®, and DeltaV™ systems Supports predictive diagnostics via AMS software Compact 1-slot design for CSI 6500 rack systems Ideal for steam, gas, and hydro turbo machinery Technical Specifications Specification Detail Manufacturer Emerson Model Number A6220 Series CSI 6500 Description Shaft Eccentricity Vibration Monitor Input Voltage -1 to 23 VDC Output Power Max. 6 W, 250 mA at 24 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Type Non-contact displacement sensor
$200.00 $100.00
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Emerson Emerson A6140 Dual-channel Shaft Absolute Vibration Monitor
Overview The Emerson A6140 Dual-channel Shaft Absolute Vibration Monitor is engineered for high-reliability monitoring of critical rotating machinery. As part of the CSI 6500 series, this 1-slot module integrates with other AMS monitors to form a complete API 670-compliant protection system. It is ideal for steam turbines, gas compressors, hydro turbo machines, and sleeve-bearing equipment. Key Features Dual-channel monitoring of shaft absolute vibration Combines displacement and case-mounted sensors in one housing Measures shaft movement relative to free space Drives alarms and relays based on vibration thresholds Supports predictive diagnostics via AMS Suite Integrates with Ovation® and DeltaV™ control systems Ideal for sleeve-bearing machines with matched rotor/case mass Compact 1-slot design for CSI 6500 cabinets Part of PlantWeb® architecture for unified operations Enables early fault detection and machinery protection Technical Specifications Specification Detail Manufacturer Emerson Model Number A6140 Series CSI 6500 Description Dual-channel Shaft Absolute Vibration Monitor Input Voltage -1 to -23 VDC Output Voltage 5 to +15 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Configuration Displacement + Case-mounted vibration
$200.00 $100.00
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GE GE IS220PVIBH1A Vibration Monitor I/O Pack
Product Overview The GE IS220PVIBH1A Vibration Monitor I/O Pack from the Mark VIe Control Systems series delivers precise vibration and proximity signal acquisition. It supports up to 13 input channels and interfaces directly with the TVBA terminal board using a DC-37 connector. This module integrates a processor board, acquisition board, and daughterboard, enabling high-speed data capture from sensors like Proximitors®, Velomitor®, accelerometers, and Keyphasor® devices. The unit includes diagnostic LEDs for quick visual status checks. Technical Specifications Specification Detail Manufacturer General Electric Part Number IS220PVIBH1A Series Mark VIe Control Systems Voltage Input 28 Vdc Max Current 1 A Dimensions (L×W×H) 8.3 cm × 4.2 cm × 12.2 cm Weight 340 g Ethernet Ports Dual RJ45 Power Input 3-pin connector Output Connector DC-37 pin Channels Supported 13 total Application & Compatibility The IS220PVIBH1A module is compatible with the TVBA vibration terminal board in both simplex and TMR control modes. It does not support the TVIB board. Frame rates vary depending on network configuration, with dual Ethernet supporting rates below 100 Hz and single Ethernet supporting rates from 3.125 to 100 Hz. This I/O pack is ideal for turbine vibration monitoring, predictive maintenance systems, and industrial automation requiring high-resolution sensor data.
$200.00 $100.00
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Emerson Emerson A6125 Dual-channel Case Piezoelectric Vibration Monitor
Overview The Emerson A6125 Dual-channel Case Piezoelectric Vibration Monitor is engineered for high-reliability protection of critical rotating machinery. As part of the CSI 6500 series, this 1-slot module integrates with other AMS monitors to build a complete API 670-compliant system. It is ideal for steam turbines, gas compressors, hydro turbo machines, and rolling element bearing systems. Key Features Dual-channel monitoring for case vibration Accepts piezoelectric accelerometers and velometers Measures acceleration (g’s) and velocity (mm/sec or in/sec) Drives alarms and relays based on setpoint thresholds Supports predictive diagnostics via AMS Suite Integrates with Ovation® and DeltaV™ control systems Ideal for nuclear, turbo, and gearbox applications Compact 1-slot design for CSI 6500 cabinets Part of PlantWeb® architecture for unified operations Backward-compatible with older seismic sensors Technical Specifications Specification Detail Manufacturer Emerson Model Number A6125 Series CSI 6500 Description Dual-channel Case Piezoelectric Vibration Monitor Input Voltage -5 to +15 VDC Output Voltage 0 to 10 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Compatibility Piezoelectric accelerometers & velometers
$200.00 $100.00
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Emerson Emerson A6620 4-channel Process Input Monitor
Overview The Emerson A6620 4-channel Process Input Monitor delivers high-reliability input monitoring for critical rotating machinery. Designed for integration with the CSI 6500 series, it supports API 670-compliant protection systems across steam turbines, gas compressors, and hydro machinery. Technical Specifications Specification Details Model A6620 Series CSI 6500 Manufacturer Emerson Channels 4 Input Types ±1 V, ±10 V, 0/4–20 mA Output Power Max. 6 W, 250 mA @ 24 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Requirement 1-slot module Applications & Compatibility The Emerson A6620 supports integration with other CSI 6500 monitors to build complete API 670 machinery protection systems. It suits environments requiring precise input monitoring, including: Steam and gas turbines Industrial compressors Hydro turbo machinery AMS Suite and PlantWeb® systems Its compatibility with ±1 V, ±10 V, and 0/4–20 mA signals ensures flexible deployment across diverse industrial setups.
$200.00 $100.00
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GE GE IS215VAMBH1A Acoustic Monitoring Board
Product Overview The GE IS215VAMBH1A Acoustic Monitoring Board from the Mark VI Series delivers high-speed signal conditioning and analysis for turbine acoustic diagnostics. It supports 18 input channels via two IS200TAMB terminal boards and integrates seamlessly with third-party charge amplifiers like Bentley Nevada, Vibro-meter, and GE/Reuter-Stokes. This board features differential inputs, adjustable gain settings, and FPGA-based preprocessing with FIR filters. It performs real-time RMS calculations and peak amplitude alarms across all channels, ensuring precise monitoring of dynamic pressure signals. Technical Specifications Parameter Specification Part Number IS215VAMBH1A Series Mark VI Voltage 24 V DC Current Range 20–60 mA Dimensions 300 mm × 50 mm × 180 mm Weight 0.8 kg Signal Processing Features 18-channel synchronous analog/digital sampling with 8x oversampling FPGA preprocessor with FIR filtering and open wire detection RMS value calculation and configurable peak alarm detection List capture capability triggered by alarm events Supports differential input from third-party charge amplifiers Power supply options include +24V or -24V via IS200TAMB or external source Application & Compatibility Use the IS215VAMBH1A board in gas turbine frames 6, 7, or 9 for acoustic monitoring and diagnostics. It connects to one or two IS200TAMB terminal boards and supports integration with sensors from PCB Piezotronics, GE PS CCSA, and other vendors. Ideal for vibration analysis, combustion monitoring, and dynamic pressure sensing in industrial turbine environments.
$200.00 $100.00
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Emerson Emerson A6312 Dual-channel Speed and Key Monitor
Overview The Emerson A6312 Dual-channel Speed and Key Monitor delivers high-reliability protection for critical rotating machinery. As part of the CSI 6500 series, this 1-slot module monitors speed, phase, zero speed, and rotation direction, supporting API 670-compliant protection strategies for steam turbines, gas compressors, and hydro turbo systems. Key Features Monitors speed, phase, zero speed, and rotation direction Dual-channel configuration for enhanced reliability Redundant mode with automatic tach switchover Sensor gap voltage and pulse comparison diagnostics Supports toothed wheel, gear, or keyway targets for speed Requires once-per-revolution target for phase measurement Integrates with AMS 6500, DeltaV™, and Ovation® systems Enables predictive diagnostics via AMS Suite Compact 1-slot design for CSI 6500 racks Ideal for steam, gas, and hydro turbo machinery Technical Specifications Specification Detail Manufacturer Emerson Model Number A6312 Series CSI 6500 Description Dual-channel Speed and Key Monitor Input Voltage 0 to ±27.3 VDC Output Power Max. 6 W, 250 mA at 24 VDC Dimensions 30.0 mm × 128.4 mm × 160.0 mm Weight 320 g Slot Configuration 1-slot Sensor Type Non-contact displacement sensor
$200.00 $100.00
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EMERSON Emerson A6370D | Overspeed Protection Monitor | AMS 6500 Series
Overview The A6370D Overspeed Protection Monitor from Emerson is a dedicated safety module designed for high‑speed rotating equipment within the AMS 6500 machinery protection platform. The module continuously evaluates shaft rotational speed and provides rapid protective action when preset overspeed thresholds are exceeded. Its design supports integration into DCS‑based safety architectures and ensures reliable performance in demanding industrial environments. Functional Characteristics The A6370D module processes speed input signals from proximity probes or magnetic pickups and executes overspeed logic with deterministic response time. It is engineered to meet stringent protection requirements for turbines, compressors, expanders, and other high‑inertia machinery. The module supports redundant configurations to reduce the risk of nuisance trips and maintain operational continuity. The unit communicates with AMS configuration software, enabling engineers to define trip limits, monitor real‑time speed values, and perform diagnostics without interrupting plant operations. Its rugged construction ensures stable operation in areas exposed to vibration, electrical noise, and temperature variations. Technical Specifications Parameter Specification Model A6370D Brand Emerson Product Type Overspeed Protection Monitor Product Series AMS 6500 Condition Brand New Weight 0.24 kg Dimensions 19 × 12.8 × 7 cm Origin USA Minimum Order Quantity 1 HS Code 8537101190 System Integration DCS Communication Interface Ethernet‑based service access Availability In Stock Application Scenarios Turbine overspeed protection Compressor and expander speed monitoring Machinery protection in gas processing, petrochemical, and power generation facilities Safety‑critical shutdown systems requiring deterministic speed trip logic Integration with AMS 6500 vibration and condition monitoring modules FAQ Q: Can the A6370D be used in redundant protection architectures? A: Yes. The module supports redundant deployment to enhance reliability and reduce false trip events. Q: What types of sensors are compatible with the A6370D? A: It typically accepts speed signals from magnetic pickups or proximity probes, depending on system configuration. Q: Is the module still supported after discontinuation? A: While discontinued, it remains fully serviceable and compatible with existing AMS 6500 installations.
$200.00 $100.00
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ABB ABB MCM800 Machinery Condition Monitoring
Overview The ABB MCM800 Machinery Condition Monitoring module combines monitoring, protection, and communication in one unit. Engineers rely on its universal design to reduce hardware requirements and simplify spare part management. Technical Specifications Parameter Value Model Number MCM800 Module Type Machinery Condition Monitoring Manufacturer ABB Part Number MCM800 Product Catalog Symphony Plus Voltage 24 VDC Current 4–20 mA Dimensions 187 × 210 × 122 mm Weight 1 kg System DCS Communication Interfaces Profibus DP, Ethernet TCP/IP Product Origin Sweden Lead Time In Stock Status Active Functional Description The ABB MCM800 monitors vibration, eccentricity, thrust position, differential expansion, and case expansion. Engineers benefit from synchronous speed and harmonic data, which detect machine defects early. The module also provides waveform data for advanced analysis, including FFTs, waterfall plots, orbits, and bode plots. Design and Build The ABB MCM800 measures 187x210x122mm and weighs 1kg, making it compact yet durable. Eleven LEDs on the front panel indicate module and I/O status, simplifying diagnostics. DIN rail mounting ensures straightforward installation in centralized or remote locations. Applications and Compatibility The ABB MCM800 integrates seamlessly into Symphony Plus DCS systems or operates standalone. Engineers deploy it in rotating machinery applications across power generation, oil and gas, and manufacturing industries. Its compatibility with multiple sensor types—including accelerometers, piezoelectric probes, and DC LVDTs—ensures versatile monitoring. Key Benefits Universal module combines monitoring, protection, and communication. Profibus DP and Ethernet TCP/IP interfaces support flexible integration. Eleven LED indicators simplify diagnostics and monitoring. Compact 1kg design supports centralized or remote installations.
$200.00 $100.00
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