Products Description
This proximity measurement system enables non-contact measurement of the relative displacement of moving mechanical components. It is particularly suitable for measuring the relative vibration and axial position of rotating shafts in machinery such as steam, gas, and water turbines, generators, turbo-compressors, and pumps. The system consists of a TQ 402 or TQ 412 non-contact sensor and an IQS 450 signal conditioner. Together, they form a calibrated proximity measurement system with interchangeable components. The system outputs a voltage or current proportional to the distance between the sensor probe and the target (e.g., the rotating shaft). The IQS 450 signal conditioner contains a high-frequency modulator/demodulator that provides the driving signal to the sensor. This signal generates the electromagnetic field used for gap measurement. The signal conditioner circuitry uses high-quality components and is housed in an aluminum enclosure.
Technical specifications

Brand: VIBRO-METER
Model: IQS450 204-450-000-002
Product type: Signal Conditioner
Voltage at min. GAP : −1.6 V
Voltage at max. GAP : −17.6 V
Dynamic range : 16 V
Output impedance : 500 Ω
Short-circuit current : 45 mA
Output capacitance : 1 nF
Output inductance : 100 µH
Operating : −35 to +85°C
Storage : −40 to +85°C
Installation & Usage Guide
- Mounting: Secure the module on a DIN rail or mount it on a flat panel surface.
- Sensor Connection: Connect compatible probes or sensors to the input terminals.
- Power Supply: Provide a stable 24 VDC input to the unit.
- Output Wiring: Connect the conditioned outputs (4–20 mA or voltage) to your monitoring or control system.
- Verification: Perform a calibration check to confirm proper signal conditioning before full operation.
Our Advantages at a Glance
At PLC Leader, we are dedicated to delivering top-quality industrial automation parts to support your operations. Here's why working with us makes a difference:
- 100% Genuine Parts: All products are original and come with detailed test reports for complete peace of mind.
- Fast & Reliable Service: Our efficient warehouse and logistics ensure quick responses and rapid shipping worldwide.
- Extensive Stock & Competitive Pricing: We offer a wide selection of multi-brand automation spare parts at highly competitive prices.
- One-Year Warranty: Every product includes a one-year warranty, giving you confidence in your purchase.
- Tailored Solutions: From part replacements to equipment upgrades or sourcing discontinued models, we provide solutions to keep your systems running smoothly.
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