TQ412 111-412-000-012-A1-B1-E010-F0-G000-H05

Product specifications and parameters

Type                           TQ412 reverse-mounted eddy current sensor

Order Number             111-412-000-012

Environment                A1

Installation thread        B1

Integrated cable           E010

Protective hose            F0/G000

Total system length      H05

Matching conditioner    IQS900

Measurement range     2mm or 4mm

Frequency response     DC to 10 kHz

Operating temperature   -40°C to +180°C

Protection grade           IP68

Material                      316L stainless steel housing, Torlon tip, FEP cable

Product updates and technological development

The TQ412 F0 model may seem simple, but in fact, it is a concentrated embodiment of the evolution logic of industrial sensor technology.

The paradigm shift from "single hardware" to "systematic solutions"

Early sensors only focused on the performance of the probe itself. Today, the value of TQ412 has extended to the entire "perception - transmission - processing" chain. The emergence of options such as F0, F1, and F2 indicates that manufacturers regard cables as an integral part of the system. This system-level thinking ensures signal integrity from the probe tip to the input end in the control room and guarantees "plug and play" interchangeability through factory calibration, completely transforming the on-site maintenance mode.

The refinement of product strategies and market stratification

Meggitt has achieved precise market segmentation through a detailed ordering code system:

F0      Anchor to cost-sensitive markets

F1      Serve the mainstream industrial market with physical risks

F2      High-end niche markets covering extreme chemical environments

This "one core, multiple options" strategy not only maximizes the return on R&D investment but also meets the differentiated needs of different customer groups.

The pragmatic orientation of technological iteration

The upgrade from IQS450 to IQS900 is not merely about pursuing higher standards, but rather reflects a pragmatic approach in engineering. Research shows that the fault characteristic frequencies of the vast majority of rotating machinery are below 10kHz. Sacrificing unnecessary high-frequency performance can simplify circuit design, reduce costs, and make it easier to meet new safety standards such as EN 61010-1:2010. This is a mature and stable technological evolution path.

Although the current TQ412/IQS900 still has analog output, its modular and digital underlying architecture (such as the VM900 platform) paves the way for future evolution. It can be foreseen that the next-generation products may integrate into the IIoT ecosystem in the following ways while maintaining the same physical interfaces and protection levels:

The intelligent conditioner integrates an edge computing unit within the IQS9xx to achieve localized fault feature extraction and health status assessment.

Digital communication supports HART protocol superimposed on 4-20mA signals, or industrial Ethernet protocols such as IO-Link and Ethernet-APL are adopted to achieve two-way communication and remote diagnosis.

Digital twin integration enables the calibration data and operational status of sensors to be directly mapped onto the digital twin of the equipment, providing high-quality data sources for predictive maintenance.