The Vibro-Meter TQ412 111-412-000-012 is a professional-grade TMR proximity sensor for the VM600 monitoring system. Featuring a 2-4mm range and reverse-mount housing, it provides API 670 compliant vibration and displacement monitoring for critical turbines and compressors.
The Vibro-Meter TQ412 111-412-000-012 serves as a high-performance inductive proximity sensor for rotating machinery. This specific reverse-mount model belongs to the renowned VM600 series by Meggitt. It measures shaft vibration and axial position with high precision. Furthermore, the sensor adheres to API 670 standards for machinery protection systems. Its rugged construction ensures reliable performance in the most demanding industrial environments.
This transducer operates based on eddy current principles to detect metallic target movement. The sensor head contains a molded coil that generates an electromagnetic field. As the shaft moves, it changes the field impedance for the connected IQS900 signal conditioner. Consequently, the system produces an output signal proportional to the physical gap distance. This non-contact method prevents wear and allows for continuous monitoring of high-speed rotors.
The 111-412-000-012 features a specialized reverse-mount design for compact installation areas. Specifically, the Torlon® tip provides excellent resistance to chemicals and thermal expansion. Integrated temperature compensation maintains signal linearity across a broad thermal range. Additionally, the assembly includes an integral coaxial cable for secure data transmission. The hardware integrates seamlessly with VM600Mk2 racks for centralized data processing.
Engineers typically deploy this proximity system in power generation and petrochemical facilities. It monitors critical assets such as steam turbines, gas compressors, and large industrial pumps. Because it supports SIL 2 safety architectures, it is suitable for emergency shutdown loops. The sensor effectively detects shaft eccentricity and thrust bearing wear before failures occur. Therefore, it remains a vital component for predictive maintenance and asset protection.
| Category | Details |
| Brand | Vibro-Meter (Meggitt) |
| Model Number | TQ412 |
| Order Code | 111-412-000-012 |
| Measurement Range | 2 mm to 4 mm |
| Frequency Response | DC to 20 kHz |
| Operating Temperature | -40°C to +180°C |
| Construction Material | Stainless steel with Torlon® tip |
| Output Type | Voltage or current via IQS conditioner |
| Certifications | SIL 2 compatible, Ex-rated versions available |
The Emerson EPRO PR6424/006-111 is a 10mm eddy current displacement sensor for non-contact shaft vibration and position monitoring. Featuring a ruggedized ceramic tip, CON031 connector, and high thermal stability, this probe provides reliable real-time diagnostics for turbines and compressors in compliance with API 670 standards.
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