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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power provides advanced, RF-validated legacy eddy-current hardware to sustain perfect micro-henry inductance harmony within frontline transduction loops, successfully preventing critical skin-effect telemetry errors and sensory-circuit deadlocks triggered by degraded alternative configurations.

        IQS450 S3960 204-450-000-002-A1-B21-H5-I0

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        Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner – a signal conditioning module from Meggitt's Vibro-meter® product line, designed for non-contact proximity measurement systems based on eddy-current principle.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for IQS450 S3960 204-450-000-002-A1-B21-H5-I0

        • Manufacturer:
          Vibro-Meter
        • Part Number:
          IQS450 S3960 204-450-000-002-A1-B21-H5-I0
        • Product Family:
          Vibro-Meter
        • Stock:
          1
        • Sensitivity:
          8 mV/µm (200 mV/mil) – Ordering option B21
        • Linear Measurement Range:
          0.15 mm to 2.15 mm
        • Voltage Output (3-wire):
          -1.6 V to -17.6 V
        • Current Output (2-wire):
          -15.5 mA to -20.5 mA
        • Dynamic Range (Voltage/Current):
          16 V / 5 mA
        • Output Impedance:
          500 Ω
        • Short-circuit Current:
          45 mA
        • Frequency Response:
          DC to 20 kHz (-3 dB)
        • Power Supply Voltage:
          -20 V to -32 V
        • Supply Current (Voltage output):
          -13 mA ±1 mA (-25 mA max.)
        • Supply Current (Current output):
          -15.5 mA to -20.5 mA
        • Output Capacitance:
          1 nF
        • Output Inductance:
          100 μH
        • Weight:
          0.14 kg
        • Estimated shipping dimensions:
          8x5.5x3.7cm
        • Tariff Code:
          8537101190
        • Country of origin:
          Switzerland
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Applications Monitoring & Control Operating Environment

        Features:

        • Precision Eddy-Current Sensing for Critical Asset Protection
        • Dual Output Flexibility with Complete Interchangeability
        • Rugged Design with Hazardous Area Certifications
        The IQS450 utilizes advanced eddy-current technology to deliver linear, drift-free measurement of shaft relative vibration, axial position, and displacement. This non-contact measurement principle provides unparalleled accuracy and repeatability for continuous machinery condition monitoring, ensuring reliable data for predictive maintenance and early fault detection in turbines, compressors, and pumps. The Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner achieves a sensitivity of 8 mV/µm across a 2 mm measurement range, making it ideal for high-precision applications.

        The conditioner provides both 3-wire voltage and 2-wire current outputs, allowing seamless integration with a wide range of monitoring systems. Voltage output is ideal for medium-distance transmission, while current output ensures signal integrity over long cable runs. Moreover, all components in the Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner system are fully interchangeable—sensors and conditioners can be replaced without recalibration, dramatically reducing maintenance time and operational downtime.

        Built with injection-molded aluminum housing and engineered to operate from -35°C to +85°C, the IQS450 withstands the harshest industrial environments. It carries Ex ia and Ex nA certifications for use in potentially explosive atmospheres, making it suitable for oil & gas, petrochemical, and power generation facilities where safety and reliability are paramount. The wide frequency response from DC to 20 kHz ensures accurate capture of both static displacement and dynamic vibration signals.

        The IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Vibro-meter Signal Conditioner may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner

        General

        • Manufacturer Vibro-meter
        • Model IQS450 S3960 204-450-000-002-A1-B21-H5-I0
        • Condition New Original ready stock
        • Product Family CE281 444-281-000-111,TQ402 111-402-000-012,TQ412 S3960 111-412-000-013
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Steam, Gas, and Hydraulic Turbines – The IQS450 is widely used to measure relative shaft vibration and axial position in turbines, ensuring safe operation and enabling early detection of rotor imbalance, bearing wear, or resonance conditions . The Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner provides the precise signal conditioning required for these critical assets.
        • Turbo-Compressors and Pumps – In high-speed rotating machinery, the conditioner captures real-time vibration and displacement data, helping to prevent catastrophic failures and unplanned shutdowns . It is particularly suitable for submerged pump applications where non-contact measurement is essential.
        • Generators and Alternators – The conditioner monitors rotor axial position and vibration, protecting against thrust bearing wear and ensuring stable power generation output.
        • Oil & Gas, Petrochemical, and Power Generation Industries – With Ex certifications for hazardous areas and API 670 compliance, the IQS450 is a trusted solution for safety-critical installations in the most demanding sectors.
        • Shaft Relative Vibration Monitoring – The IQS450 provides continuous, dynamic measurement of radial shaft vibrations caused by imbalance, misalignment, or resonance. This data feeds into machinery protection systems (e.g., VM600, VibroSmart®) for real-time alarming and automatic shutdown.
        • Axial Position / Displacement Measurement – The conditioner precisely measures the axial position of the rotor relative to the housing, enabling monitoring of thrust bearing wear and preventing axial rubs or catastrophic failure.
        • Gap Measurement – The system outputs a signal proportional to the gap between the transducer tip and the shaft, supporting applications such as differential expansion monitoring and valve position feedback.
        • Integration with Protection Systems – The IQS450 is fully compatible with Meggitt's VM600 and VibroSmart® monitoring platforms, as well as third-party PLCs and DCS, ensuring seamless integration into existing control architectures.
        • Wide Temperature Range – Operating from -35°C to +85°C, the IQS450 performs reliably in both extreme cold and high-heat industrial environments. Storage capability extends from -40°C to +85°C.
        • Hazardous Area Suitability – Certified for Ex ia (intrinsic safety) and Ex nA (non-sparking) environments, the Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner can be safely installed in Zone 2 and Division 2 locations, making it ideal for oil and gas, refinery, and chemical plant applications.
        • Dust Protection – Rated IP40, the aluminum housing provides effective ingress protection against dust, ensuring reliable operation in dirty industrial settings.
        • Vibration and Shock Resistance – The conditioner is designed to withstand 2 g peak vibration (10–55 Hz) and 15 g peak shock (half-sine, 11 ms duration), ensuring robust performance even in high-vibration machinery environments.
        Description
        The IQS450 S3960 204-450-000-002-A1-B21-H5-I0 is a fully interchangeable signal conditioner that works seamlessly with TQ4xx series proximity sensors (including TQ402 and TQ412). Its high-frequency modulator/demodulator supplies the driving signal to the transducer, generating the electromagnetic field required for gap measurement . The conditioner circuitry is built with high-quality components and housed in a rugged injection-molded aluminum extrusion, ensuring stable performance even in demanding industrial environments.

        The Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 supports both 3-wire voltage output (-1.6 V to -17.6 V) and 2-wire current output (-15.5 mA to -20.5 mA), offering flexibility for signal transmission over varying distances. The voltage configuration is ideal for medium-distance transmission, while the current output provides robust signal integrity for long-distance runs.

        This specific configuration is optimized for a 5-meter total system length (H05), supporting flexible cable combinations to suit specific installation needs . All components within the system are fully interchangeable, significantly simplifying maintenance and replacement—a critical feature for minimizing downtime in continuous operations.

        The IQS450 S3960 204-450-000-002-A1-B21-H5-I0 operates reliably across a wide temperature range of -35°C to +85°C, with storage capability from -40°C to +85°C. It carries an IP40 protection rating, ensuring dust protection suitable for most industrial settings . The conditioner also meets API 670 machinery protection standards, making it a trusted choice for mission-critical applications.
        Alternative Names
        IQS450 S3960 204450000002A1B21H5I0 IQS450 S396O 2O4-45O-OOO-OO2-A1-B21-H5-IO 1QS450 S3960 204-450-000-002-A1-B21-H5-I0 IQS450 S3960 204-450-000-002-AI-B2I-H5-I0 IQS450 S3960 204-450-000-002-A1-B23-H5-I0 TQ402 111-402-000-013 S3960 A1-B1-C042-D000-E010-F0-G000-H10 TQ402 111-402-000-012 A1-B1-D000-E010-F0-G000-H05
        Technical notes
        The Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner operates on the eddy-current principle, generating a high-frequency electromagnetic field through its drive signal to a TQ4xx proximity sensor. Changes in the target gap alter the probe coil impedance; the conditioner demodulates this signal into a standardized analog output proportional to the measured distance, ensuring reliable, accurate data for machinery protection systems.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What sensors are compatible with the Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner?
        The IQS450 is designed for use with TQ4xx series proximity sensors, including TQ401, TQ402, TQ403, TQ412, and TQ423. The specific configuration A1-B21-H05-I0 is optimized for TQ402/TQ412 sensors with a sensitivity of 8 mV/µm and a total system length of 5 meters . When replacing a sensor, the system's interchangeable design eliminates the need for recalibration.
        What is the power supply requirement for the Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner?
        The conditioner requires a DC supply voltage between -20 V and -32 V. In 3-wire voltage configuration, it draws approximately -13 mA ±1 mA, while in 2-wire current configuration, the current varies between -15.5 mA and -20.5 mA depending on the measured gap . The module also includes protection against short circuits to enhance system safety.
        What communication protocols and system integrations are supported?
        The IQS450 provides analog output signals (voltage or current) rather than digital communication protocols. It seamlessly integrates with Meggitt's VM600 and VibroSmart® machinery monitoring systems, as well as third-party PLCs, DCS, and SCADA platforms that accept 4–20 mA or ±10 V analog inputs . It is also API 670 compliant, meeting global machinery protection standards.
        What is the frequency response of the Vibro-meter IQS450 S3960 204-450-000-002-A1-B21-H5-I0 Signal Conditioner?
        The frequency response spans DC to 20 kHz at -3 dB, enabling accurate measurement of both static (displacement) and dynamic (vibration) signals. This wide bandwidth ensures reliable capture of high-frequency vibration components critical for fault diagnosis in high-speed rotating machinery.
        What is the output impedance and short-circuit protection?
        The voltage output has an impedance of 500 Ω, and the short-circuit current is limited to 45 mA, providing robust protection against wiring faults. The current output has a dynamic range of 5 mA, with output capacitance and inductance ratings of 1 nF and 100 μH respectively.

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