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The TQ403 111-403-000-012 is a non-contact proximity transducer utilizing the eddy current principle for machine condition monitoring. The active tip of the device contains an internal wire coil moulded inside a Torlon housing, while the structural body is composed of stainless steel with metric threads. This model is configured with an integral coaxial cable terminated with a self-locking miniature coaxial connector.
Non-contact measurement system based on eddy-current principle
Voltage or current output with protection against short circuits
Ex certified versions for use in hazardous areas (potentially explosive atmospheres)
The TQ403 transducer operates on eddy current principles, relying on the high-frequency modulator/demodulator circuitry within the IQS450 signal conditioner to generate the electromagnetic field required for gap measurement. This signal conditioner features high-quality components enclosed in a durable aluminum extrusion. To extend the measurement system front-end, a single EA403 extension cable can be matched with the TQ403 transducer without losing calibration or component interchangeability.
For mechanical and environmental deployment in harsh conditions, optional housings, junction boxes, and interconnection protectors are available to safeguard the critical cable connections. Powering the TQ4xx-based system is highly flexible, supporting integration with machinery monitoring architecture such as VM600/VM600Mk2 modules, VibroSmart® modules, or standalone industrial power supplies.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
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.
Thermal Power Generation Industry
Monitors radial vibration and axial displacement of steam turbine rotors to prevent mechanical rubbing between rotating and stationary components.
Hydroelectric Power Generation Industry
Measures the shaft runout (orbit trajectory) of hydroelectric generator units and the clearance of thrust bearings.
Petrochemical Refining Industry
Monitors axial float of high-speed rotating shafts in cracked gas compressors and high-pressure heavy oil pumps to evaluate thrust bearing wear.
Iron and Steel Metallurgy Industry
Performs rotor condition monitoring for blast furnace blowers and large induced draft fans to prevent equipment damage from coupling misalignment.
Seawater Desalination Industry
Monitors the mechanical status of core load-bearing shafting on high-pressure reverse osmosis multistage centrifugal pumps and integrated energy recovery rotors.
Nuclear Power Industry
Serves as the industrial-grade non-contact monitoring physical interface on the rotating shafting of conventional island turbine-generator units and conventional high-pressure feedwater pumps.
When installing and maintaining the TQ403 111-403-000-012 passive eddy-current transducer, the target object must be confirmed as metallic, and the target surface must remain free of scratches and oil contamination Meggitt Datasheet.
Because the metric threads and the active probe tip are fragile, they must be tightened strictly according to officially specified mechanical torque to avoid excessive force, while keeping the operating environment within the limits of -40 to +180 degrees Celsius Meggitt Datasheet.
For electrical connections, pulling or sharply bending the integral coaxial cable and self-locking miniature connector is prohibited, and the entire measurement loop must maintain impedance and calibration matching with a compatible EA403 extension cable and IQS450/IQS900 signal conditioner to preserve Ex certification validity and data sampling accuracy.
The TQ403 111-403-000-012 eddy-current sensor delivers non-contact displacement data across a 12 mm measuring span. Engineered with an IP68 environmental rating, this transducer withstands field temperatures between -40°C and +180°C and holds Ex ia IIC T6 certification for explosive atmospheres. The hardware outputs a sensitivity of 1.33 mV/μm with a frequency response tracking from DC up to 20 kHz. Built with fully interchangeable system components, it pairs with the IQS450 signal conditioner to establish standard 5m or 10m measurement paths. In practice, this assembly functions as a direct monitoring interface for tracking shaft vibration and dynamic position tracking in heavy-duty compressors and turbines.
How to use products like the TQ403 111-403-000-012?
Fix the transducer into the machine bearing housing via its metric threads, align the probe tip with the rotating shaft surface, and connect it to a signal conditioner via its integral coaxial cable for signal output.
What is the rated measuring range of the TQ403 111-403-000-012?
The nominal non-contact dynamic physical measuring range of this model is 12 mm.
What is the allowable operating temperature range for the TQ403 111-403-000-012?
The physical operating environment temperature limits for this transducer range from -40 to +180 degrees Celsius.
Does the TQ403 111-403-000-012 carry Ex certifications for hazardous areas?
Yes, this model carries international Ex certifications for deployment in hazardous areas and potentially explosive environments.
What material is the transducer body of the TQ403 111-403-000-012 made of?
The fixed housing body structure of the transducer is constructed of stainless steel material with metric threads.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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