Vibro-Meter Meggitt TQ402 Proximity Transducer

Product Description

Configured for shaft radial vibration and axial displacement measurement in machinery monitoring systems, the Meggitt Vibro-Meter TQ402 (111-402-000-013) (TQ402 proximity transducer) provides non-contact eddy-current sensing for rotating machinery.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Validation

The TQ402 generates a non-contact eddy-current sensing signal that varies with the distance between the probe tip and a conductive shaft target. The signal conditioner converts this probe response into a usable measurement for machinery monitoring.

The probe uses an M10 x 1 threaded body and a 42 mm shell length. Therefore, mechanical installation must maintain the specified probe-to-target geometry required by the associated signal-conditioning system.

For TSI applications, gap-voltage validation should follow the electrical reference and calibration requirements of the compatible IQS900 or IQS450 signal conditioner. A -10 VDC target is a commonly used reference point in compatible eddy-current measurement chains, but the applicable value must follow the installed signal conditioner and calibration procedure.

The 5.0 m FEP-covered coaxial cable carries the sensor signal to the conditioning electronics. Therefore, cable routing should avoid unnecessary proximity to high-current conductors and other sources of electromagnetic interference.

Frequently Asked Questions

Q: What measurement principle does the TQ402 use?
A: The TQ402 uses non-contact eddy-current sensing to detect relative displacement between the probe and a conductive rotating-machine target.

Q: What cable is supplied with this configuration?
A: Part number 111-402-000-013 includes a 5.0 m FEP-covered coaxial cable with a self-locking miniature coaxial connector.

Q: Can the TQ402 connect directly to a machinery protection system input?
A: The probe normally operates as part of a complete measurement chain with a compatible signal conditioner, such as an IQS900 or IQS450 series unit. Direct connection should follow the specified interface requirements of the installed conditioning electronics.

Field Installation Guidelines

• Install the M10 x 1 probe body using the mechanical mounting arrangement specified for the associated machinery monitoring system.
• Maintain the required probe-to-target gap and verify the electrical gap signal during commissioning.
• Route the coaxial cable separately from high-current power wiring where practical.
• Avoid sharp bends, excessive mechanical stress, and uncontrolled movement of the integrated cable.
• Connect the miniature coaxial connector fully and verify its locking mechanism before operation.
• Use the specified conductive target material and mechanical reference conditions for calibration.
• Verify probe output and signal-conditioning parameters before placing the machinery protection channel into service.
• Follow the applicable API 670 installation and machinery protection requirements for the complete measurement chain.

Other Attributes

• Country of Origin: USA
  Lead Time: In Stock, 2 Working Days

Our Competitive Brands

• - ABB Advant-800xA，Advant OCS，Bailey Infi 90 and Net 90，H&B Freelance 2000，DSQC Robots，IGCT / IGBT
• - GE General Electric Field Control, Genius I/O, QuickPanel, RX3i PacSystem, Series 90, Series 90, Series VersaMax
• - Allen Bradley Allen-Bradley SLC500, MicroLogix, CompactLogix, ControlLogix, PLC-5, Panel View,
• - Bently Nevada 3300 System, 3500 System
• - Honeywell 7800 Series, FSC, IPC, Mxopen, TDC 2000, TDC 3000, Experion PKS(C200,C300)
• - Yokogawa Centum CS - Centum VP, Centum XL - micro XL, FA-M3, ProSafe-PLC
• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

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