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          Discontinued / Obsolete by OEM
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        TQ403 111-403-000-012

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        TQ403 111-403-000-012 is a Vibro-meter non-contact eddy-current proximity transducer with 12mm range, -40 to +180°C operation, and Ex certification for hazardous areas.
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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 TQ403 111-403-000-012

        • Manufacturer:
          Vibro-Meter
        • Part Number:
          TQ403 111-403-000-012
        • Product Family:
          Vibro-Meter
        • Product Type:
          Proximity Transducer
        • Stock:
          3
        • Linear Measurement Range:
          0.75 to 12.75 mm
        • Sensitivity (Voltage):
          1.33 mV/μm (34 mV/mil)
        • Sensitivity (Current):
          0.417 μA/μm (10.6 μA/mil)
        • Frequency Response:
          DC to 20 kHz (-3 dB)
        • Output (Voltage):
          -1.6 V (min gap) to -17.6 V (max gap)
        • Output (Current):
          -15.5 mA (min gap) to -20.5 mA (max gap)
        • Operating Temperature (Transducer):
          -40°C to +180°C
        • Short-term Survival Temperature:
          +180°C to +220°C
        • Protection Rating (Transducer):
          IP68 (tip and integral cable)
        • Weight:
          0.8 kg
        • Estimated shipping dimensions:
          1.8x8.6x3.6cm
        • Tariff Code:
          8543902100
        • 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 Application Operating Environment Monitoring & Control

        Features:

        • TQ403 111-403-000-012 provides 12mm non-contact eddy-current measurement with DC to 20 kHz frequency response.
        • Ex ia IIC T6 hazardous area certification with -40°C to +180°C operation and IP68 transducer protection.
        • Interchangeable system components with 1.33 mV/μm sensitivity and 5/10m total system length options.
        The TQ403 111-403-000-012 offers a linear measurement range of 0.75 to 12.75 mm, providing exceptional versatility for measuring both static shaft position and dynamic vibration in large rotating machinery. This extended range is particularly valuable for axial thrust position monitoring where shaft movement can exceed the capabilities of shorter-range sensors. The sensitivity of 1.33 mV/μm (34 mV/mil) for voltage output ensures that small changes in gap are accurately detected, while the frequency response from DC to 20 kHz captures both slow thermal drift and high-frequency vibration events.

        The TQ403 111-403-000-012 is certified for use in potentially explosive atmospheres with Ex ia IIC T6...T3 Ga protection, covering Zone 0, 1, and 2 hazardous locations. This certification is critical for installations in oil refineries, chemical plants, and offshore platforms where flammable gases or vapors may be present. The transducer operates continuously from -40°C to +180°C, with short-term survival up to +220°C, making it suitable for high-temperature turbine and compressor applications. The transducer tip and integral cable are rated IP68, providing complete dust-tight protection and resistance to continuous immersion, ensuring reliable performance in wet or contaminated environments.

        The TQ403 111-403-000-012 is part of a calibrated proximity measurement system where all components are fully interchangeable. This means that any TQ403 transducer, EA403 extension cable, and IQS450 signal conditioner can be combined without requiring individual calibration matching, simplifying field replacement and reducing spare parts inventory. The total system length can be configured as 5 meters (1.0m integral + 4.0m extension, or 5.0m integral with no extension) or 10 meters (1.0m + 9.0m, 5.0m + 5.0m, or 10.0m integral with no extension). The self-locking miniature coaxial connectors are hand-tightened until locked, requiring no special tools.

        The TQ403 111-403-000-012 Vibro-meter Proximity Transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Vibro-meter TQ403 111-403-000-012 Proximity Transducer Manuals, Datasheets, Drivers, 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 TQ403 111-403-000-012 Proximity Transducer Specs

        General

        • Manufacturer Vibro-meter
        • Model TQ403 111-403-000-012
        • Condition New Original ready stock
        • Product Family GSI130 244-130-000-204,444-680-000-411
        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.
        • Relative Shaft Vibration: Captures real-time dynamic motion of a rotating shaft relative to its journal bearings to identify rotor instability or imbalance.
        • Axial Displacement & Thrust Position: Measures longitudinal shaft movement (axial drift) to prevent devastating internal rubbing between turbine rotors and stators.
        • Rotational Speed & Phase Reference: Serves as a tachometer probe or a Keyphasor™ marker by detecting notches or keyways on a rotating shaft.
        • Core Equipment Deployment: Widely used on critical industrial assets, including steam and gas turbines, high-pressure turbo-compressors, centrifugal pumps, hydro-generators, and heavy-duty industrial fans.
        • Sensor Tip Temperature: Can continuously operate in intense thermal environments ranging from -40°C to +180°C.
        • High-Pressure Resistance: The specialized PEEK (Polyetheretherketone) or Torlon® sensor tip can withstand continuous operating pressures up to 100 bar.
        • Ingress Protection: The sensor head and its integral FEP-covered coaxial cable are rated IP68, rendering them completely impervious to hot lubricating oils, water, moisture, and chemical vapors.
        • Signal Output: The conditioner converts the gap between the shaft and sensor into a voltage (typically -1.6 V to -17.6 V) or current (15.5 mA to 20.5 mA) output.
        • System Integration: These signals are fed into monitoring systems like the Vibro-Meter VM600 or VibroSmart® to track machinery health.
        • Protection & Diagnostics: The system acts as a protective layer, with the ability to trigger alarms or automatic, safe shutdowns via the Distributed Control System (DCS) if vibration or displacement exceeds safe limits. Modern IQS900 units feature Built-In Self-Test (BIST) for improved reliability.
        Description
        The TQ403 111-403-000-012 is a non-contact proximity transducer from Vibro-meter's TQ4xx series, designed for measuring shaft relative vibration and position in rotating machinery. This TQ403 111-403-000-012 operates on the eddy-current principle, providing a voltage or current output proportional to the distance between the transducer tip and the target surface. 

        The TQ403 111-403-000-012 offers a linear measurement range of 0.75 to 12.75 mm with a sensitivity of 1.33 mV/μm (34 mV/mil) for voltage output or 0.417 μA/μm (10.6 μA/mil) for current output. The TQ403 111-403-000-012 has a frequency response from DC to 20 kHz (-3 dB), making it suitable for both static position and dynamic vibration measurements. 

        The TQ403 111-403-000-012 is available in Ex-certified versions for use in hazardous areas, including ATEX, IECEx, CSA, and KGS approvals for Zone 0, 1, and 2 (gas) and Zone 21 and 22 (dust). The TQ403 111-403-000-012 is matched with an IQS450 signal conditioner and can be paired with an EA403 extension cable to achieve total system lengths of 5 or 10 meters.

        The TQ403 111-403-000-012 is ideal for use with VM600Mk2/VM600 and VibroSmart machinery monitoring systems. The TQ403 111-403-000-012 is particularly suitable for measuring relative vibration and axial position of rotating machine shafts in steam, gas, and hydraulic turbines, as well as alternators, turbo-compressors, and pumps. 
        Alternative Names
        TQ4O3 111-4O3-OOO-O12 TQ403 III-403-000-0I2 TQ403 111 403 000 012 IQS450 204-450-000-001 VM600 MPC4 200-510-070-113 111-412-000-012 S3960 GSI 127 244-127-000-017 A2-B02 VM600 IOC16T 200-565-000-013
        Technical notes
        The TQ403 111-403-000-012 is a 12mm eddy-current proximity transducer with -40 to +180°C operation and Ex ia IIC T6 certification. Features DC to 20 kHz response, 1.33 mV/μm sensitivity, IP68 rating, and interchangeable components. Matches IQS450 signal conditioner for 5/10m systems. Ideal for turbine and compressor vibration/position monitoring.
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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 is the measurement range of TQ403 111-403-000-012?
        TQ403 111-403-000-012 has a linear measurement range of 0.75 to 12.75 mm, with sensitivity of 1.33 mV/μm for voltage output.
        Is TQ403 111-403-000-012 certified for hazardous areas?
        Yes, TQ403 111-403-000-012 is Ex certified for ATEX, IECEx, CSA, and KGS, suitable for Zone 0, 1, and 2 hazardous locations.
        What is the frequency response of TQ403 111-403-000-012?
        TQ403 111-403-000-012 has a frequency response from DC to 20 kHz (-3 dB), suitable for both static and dynamic measurements.
        What temperature range does TQ403 111-403-000-012 support?
        TQ403 111-403-000-012 operates from -40°C to +180°C, with short-term survival up to +220°C.

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