IQS452 204-452-000-021

IQS452 204-452-000-021 is a high-performance signal conditioner designed primarily for critical vibration monitoring applications in rotating machinery. It features an integrated high-frequency oscillator/demodulator that supplies a drive signal to compatible sensors and generates the electromagnetic field required for gap measurement.

When paired with TQ402 or TQ412 non-contact sensors, it forms a complete, calibrated eddy-current proximity measurement system with fully interchangeable components. The system enables non-contact measurement of the relative displacement of moving machine components, outputting a voltage or current signal proportional to the distance between the sensor probe tip and the target (such as a machine shaft).

• Minimum gap voltage: -1.6 V
• Maximum gap voltage: -17.6 V
• Dynamic range: 16 V
• Output impedance: 500 Ω
• Short-circuit current: 45 mA
• Supply voltage: -20 V to -32 V
• Supply current: 13 ± 1 mA (max. 25 mA)
• Input capacitance: 1 nF
• Input inductance: 100 μH

• High-precision measurement: Achieves micron-level displacement measurement based on the eddy current principle
• Exceptional reliability: Features high-quality components and extruded aluminum housing, suitable for harsh industrial environments
• Flexible configuration: Configurable measurement range and sensitivity; supports current or voltage output
• Explosion-proof certification: Dual ATEX and CSA certified for use in potentially explosive environments
• Component interchangeability: All system components are fully interchangeable, facilitating maintenance
• Wide temperature adaptability: Operating temperature range from -30°C to +70°C
• Long-distance signal transmission: Current output mode supports long-distance signal transmission
• Predictive maintenance support: Real-time monitoring of rotating machinery vibration status

Power Generation: Vibration monitoring of steam turbines, gas turbines, generators, and wind turbines

Oil & Gas: Vibration analysis and monitoring of compressors, pumps, and pipelines

Manufacturing: Health management of critical equipment such as electric motors, gearboxes, and fans

Transportation: Aero-engine testing and railway bearing monitoring

Rotating Machinery: Turbo-compressors, hydraulic turbines, AC generators, etc.

A gas-fired power plant utilizes the IQS 452 (model 204-452-000-021) in conjunction with TQ 412 proximity sensors to monitor the shaft vibration and axial displacement of its gas turbines in real time.

The system outputs a high-sensitivity voltage signal of 8 mV/μm and connects to the DCS via a three-wire configuration. This solution enables continuous monitoring of turbine bearing conditions, allowing the operations and maintenance team to detect abnormal vibration trends early and prevent unplanned shutdowns.

What output types does the IQS 452 (204-452-000-021) support?

This model utilizes a voltage output (3-wire configuration) with an output range of -1.6 V to -17.6 V and a dynamic range of 16 V. The IQS 452 series also supports a current output (2-wire) configuration, which can be selected based on ordering requirements.

Which sensors can be used with the IQS 452?

The IQS 452 is primarily designed for use with TQ 402 or TQ 412 non-contact proximity sensors. It can also be used in conjunction with the PA150 probe mounting adapter.

How is the total system length determined?

The total system length (TSL) is the sum of the sensor's integral cable length and the extension cable length. The 204-452-000-021 is configured as a 5 m total system length. The minimum TSL requirement is 4.4 m for a 5 m link and 8.8 m for a 10 m link.

What is the warranty period?

Standard industrial warranty: 12 months; with proper installation and no overloading, the product has a service life of 5-10 years.