IQS450 204-450-000-002 Signal conditioner

1. Product Overview:Enabling Accurate Non-Contact Monitoring

The Meggitt IQS450 Signal Conditioner (PNR: 204-450-000-002) is a high-performance signal processing unit that forms the backbone of Meggitt’s proximity measurement systems, working exclusively with TQ442 proximity transducers and EA402 extension cables. Based on the eddy-current principle, it converts raw sensor signals into calibrated voltage or current outputs—enabling contactless measurement of relative displacement for machinery protection and condition monitoring.

Engineered for industrial and hazardous environments (power generation, oil & gas, turbomachinery), this conditioner features temperature compensation, robust EMI protection, and global safety certifications. It integrates seamlessly with Meggitt’s VM600Mk2/VM600 and monitoring systems, making it ideal for confined spaces or hard-to-access areas where reliable machinery health data is critical to preventing unplanned downtime

2. Key Features & Benefits:Industrial-Grade Reliability

2.1 Versatile Signal Conversion & Precision

• Dual Output Configurations: Supports 3-wire voltage output (-1.6 V to -17.6 V) or 2-wire current output (-15.5 mA to -20.5 mA), with short-circuit protection (45 mA max short-circuit current) to avoid equipment damage。

• Multiple Sensitivity & Range Options: Adapts to diverse needs with two measurement ranges (2 mm or 4 mm) and four sensitivity choices—8 mV/µm (2 mm), 2.5 µA/µm (2 mm), 4 mV/µm (4 mm), 1.25 µA/µm (4 mm)—ensuring compatibility with different machinery types、。

• Broad Frequency Response: DC to 20 kHz (-3 dB) captures both static position (e.g., shaft axial gap) and dynamic vibration signals, critical for early detection of imbalance or bearing wear、。

2.2 Hazardous Area Compliance

• Global Ex Certifications: Approved for explosive atmospheres, including Europe (II 1G Ex ia IIC T6–T3 Ga; II 3G Ex nA II T6–T3 Gc), International (IECEx Ex ia IIC T6–T3 Ga), North America (CSA US Class I, Divisions 1/2, Groups A–D), South Korea (KGS Ex ia IIC T6–T3), and Russia (EAC RU Ex ia IIC T6–T3 Ga)、、。

• Environmental Durability: Operates in -35°C to +85°C (with voltage derating at high temps) and 95% non-condensing humidity; IP40 protection rating resists dust ingress in industrial settings。

2.3 Seamless Integration & Low Maintenance

• Component Interchangeability: All parts of the TQ442-IQS450-EA402 system are interchangeable, simplifying replacement and reducing maintenance time。

• Flexible Mounting: Installs via two/four M4 screws or MA130 mounting adaptor (for TH 35 DIN rails, per EN 50022/IEC 60715), fitting into standard control cabinets or tight spaces

3. Technical Specifications: Engineered for Accuracy

3.1 Electrical Parameters

3.2 Performance & Environmental Tolerance

3.3 Physical & Mechanical Details

• Construction Material: Injection-moulded aluminium (lightweight, corrosion-resistant)。

• Weight: 140 g (standard version); 220 g (Ex version)、。

• Connections: Input (self-locking miniature coaxial connector, female); Output/Power (3 screw terminals, max 2.5 mm² wire)

4. System Compatibility & Calibration

4.1 Compatible Components

• Proximity Transducers: TQ442 (right-angle mount, stainless steel body, Torlon® tip)、。

• Extension Cables: EA402 (FEP-covered 70 Ω coaxial cable, 0.5 m–10 m lengths)、。

• Monitoring Systems: VM600Mk2/VM600 modules or third-party power supplies。

• Accessories: MA130 mounting adaptor (DIN rail), IP172 interconnection protector, JB118 junction box.

4.2 Calibration Requirements

• Calibration Temperature: +23°C ±5°C (factory-calibrated)。

• Standard Target Material: VCL 140 steel (1.7225); equivalents include AISI 4140, AFNOR 40 CD4.

• Custom Calibration: Available for non-standard alloys (provide sample or specs per Meggitt

  drawing PZ 7009/1).

5.Installation & Safety Guidelines

5.1 Installation Steps

1. Mounting: Secure with M4 screws (torque 0.6 N•m) or MA130 adaptor (for TH 35 DIN rails).

2. Wiring: Connect TQ442/EA402 to the coaxial input (hand-tighten until locked); use 2.5 mm² max wire for output/power terminals (follow COM/+/– markings).

3. TSL Trimming: Ensure total system length meets minimums to optimize performance (e.g., 4.4 m min for 5 m TSL).

5.2 Safety Notes

• Ex nA Mode: Install in an IP54+ enclosure to maintain non-sparking protection.

• Voltage Derating: Reduce maximum supply voltage at +85°C (refer to Meggitt’s thermal graph) to prevent overheating.

• Cable Protection: Use flexible stainless steel hose (with FEP sheath) for mechanical/chemical resistance in harsh environments.

6. Applications: Where Precision Matters

The IQS450 is critical for proximity measurement in:

• Power Generation: Steam/gas turbines, generators, pumps (shaft vibration/axial position monitoring).

• Oil & Gas: Turbocompressors, pipelines, offshore equipment (hazardous area compliance).

• Heavy Manufacturing: Motors, gearboxes (confined-space installations).

7. Ordering Information: Customize for Your Needs

7.1 Related Products

• Proximity Transducers: TQ442 (111-442-000-013).

• Extension Cables: EA402 (913-402-000-013).

• Accessories: MA130 Mounting Adaptor (809-130-000-011).