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        111-412-000-012
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        111-412-000-012
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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power assists with legacy probe sourcing and configuration review.

        TQ412 111-412-000-012

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        1001 reviews ｜ Need a Specific Revision?
        Vibro-Meter TQ412 111-412-000-012 is a reverse-mount proximity sensor for non-contact shaft-displacement measurement in a conditioned measurement chain.
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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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        Technical specifications for TQ412 111-412-000-012

        • Manufacturer:
          Vibro-Meter
        • Part Number:
          TQ412 111-412-000-012
        • Product Family:
          TQ402 / TQ412 Proximity Measuring System
        • Product Type:
          Reverse-Mount Proximity Sensor
        • Stock:
          1
        • Measurement Principle:
          Non-contact eddy current
        • Mounting Arrangement:
          Reverse mount with integral retaining nut
        • Integral Cable Construction:
          Low-impedance coaxial cable with FEP insulation
        • Integral Cable Connector:
          Male AMP-type miniature coaxial connector
        • Weight:
          0.4 kg
        • Estimated shipping dimensions:
          24 x 20 x 3 cm
        • Tariff Code:
          Please confirm the destination before shipping
        • 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 Mounting Target Quality Gap Setting Product Applications

        Features:

        • Non-contact sensing: observes a metallic target without a mechanical follower.
        • Reverse mounting: locates the sensing end through a suitable internal support.
        • Conditioned measurement: works with separate excitation and signal-processing electronics.
        The contact-free measurement of TQ412 111-412-000-012 allows the target to move without driving a mechanical linkage at the sensing point.

        Its mounting arrangement is useful where the machine design calls for a reverse-mounted probe; the available access must suit that arrangement before a spare is selected.

        The separate conditioner makes the probe part of an instrument channel rather than a complete monitor. Alarm and protection functions belong to the associated monitoring equipment.

        Apter Power supports sourcing and technical enquiries for the Vibro-Meter TQ412 111-412-000-012 Reverse-Mount Proximity Sensor beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Vibro-Meter TQ412 111-412-000-012 Reverse-Mount Proximity Sensor Manuals, Datasheets, Links 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.
        • Tip clearance: surrounding metal must remain outside the required free space to avoid influencing the measurement.
        • Support position: the sensing head must project sufficiently beyond its mounting support; a secure thread alone does not establish correct positioning.
        • Adjacent probes: preserve the specified separation so neighboring sensing fields do not interfere.
        • Shaft geometry: shoulders and shaft ends impose additional clearance constraints on the chosen measuring location.
        • Target alloy: conductivity changes the sensitivity and usable linear region, so a material change can require recalibration.
        • Temperature: thermal changes affect target properties and cable behavior; measurement precision must be assessed over operating conditions.
        • Mechanical runout: surface damage or geometric irregularity can appear in the displacement signal even without the intended vibration motion.
        • Electrical runout: uneven surface conductivity can create apparent movement, requiring target assessment rather than an automatic probe replacement.
        • Mechanical setup: set the initial probe-to-target distance with machine power off before using the measurement system.
        • Alternating movement: place the working point near the middle of the usable measuring range to allow motion in both directions.
        • One-direction movement: allocate range toward the expected travel while retaining clearance from the probe tip.
        • Electrical verification: verify the installed chain's gap-to-output relationship using the applicable OEM procedure and target material.
        • Turbine shafts: proximity measurement on steam, gas and hydraulic turbines where the installed measuring position requires reverse mounting.
        • Alternators: shaft-displacement monitoring through a suitably configured proximity measurement channel.
        • Turbo-compressors and pumps: relative shaft-movement and position monitoring, subject to the machine's probe arrangement and measurement-chain configuration.
        Description
        The reverse-mounted body of TQ412 111-412-000-012 incorporates a retaining nut for attachment to a suitable support inside the machine housing. This arrangement makes the support and access direction part of the installation, rather than treating the probe as a general-purpose threaded sensor.

        With TQ412 111-412-000-012, the measured quantity is the distance from the sensing tip to the metallic target. Changes in that distance represent shaft movement relative to the probe mounting point, giving the monitoring system a direct view of local displacement rather than casing acceleration.

        A separate signal conditioner excites the sensing coil of TQ412 111-412-000-012 and converts the response into a usable measurement signal. The probe therefore serves as the sensing end of the system; the cable arrangement and conditioner configuration remain integral to the measurement, even when only the probe is being purchased.
        Alternative Names
        Vibro-Meter TQ412 111-412-000-012 TQ412 111 412 000 012 TQ412-111-412-000-012 111412000012 TQ4I2 111-412-000-012 TQ412 111-4I2-000-012 TQ412 111-412-OOO-012 Vibro-Meter reverse-mount sensor 111-412-000-012
        Technical notes
        TQ412 111-412-000-012 uses the legacy AMP-type miniature coaxial connection, which does not self-lock. Machine vibration can loosen this joint and interrupt the measurement path. Secure the mated connection using the manufacturer's recommended heat-shrink sleeve arrangement; do not treat the connector as having the retention mechanism of a later self-locking version.
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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
        Can I shorten the cable on TQ412 111-412-000-012 to fit the existing route?
        No. Cutting an integral or extension cable changes the calibrated system length. Keep the original lengths and secure surplus cable in a loop before the junction box, without violating the cable's minimum bend radius.
        The TQ412 111-412-000-012 reading changes when a motor starts. Where should I investigate first?
        Investigate electromagnetic interference along the signal-cable route. Motor and power circuits can disturb the low-level probe signal. Keep signal wiring out of power or communications conduits and follow the measurement-system grounding arrangement before condemning the probe.
        Can I loosen TQ412 111-412-000-012 from its support to make cable servicing easier?
        Do not disturb the installed probe-to-support assembly merely to gain cable access. Moving it changes the transducer-to-target distance and can twist the integral cable. If dismantling is unavoidable, the measurement setup must be restored before the channel returns to service.
        Can the TQ412 111-412-000-012 cable joint touch a metal junction box?
        No. Keep the coaxial connectors electrically isolated from a metallic box. Insulate the joint with the prescribed sleeve arrangement so the enclosure does not create an unintended connection; mechanical enclosure alone does not provide that insulation.
        Can I replace only TQ412 111-412-000-012 in a chain assembled from different manufacturers?
        Do not mix sensor, extension-cable and signal-conditioner components from different manufacturers in this tuned measurement chain. Matching connectors alone does not establish compatibility.
        Why does the TQ412 111-412-000-012 signal change when its cable moves?
        Cable movement itself can generate interference in the measurement signal. Support the integral and extension cables at suitable intervals, including inside the machine housing. Diagnose the cable's mechanical support before treating the changing reading as actual shaft movement.

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