Signal Conditioner IQS450 204-450-000-002 A1-B21-H10-I1 is a signal conditioner for proximity measurement systems, designed to work with TQ series proximity transducers and extension cables as a complete measurement chain. Based on eddy-current measurement technology, it converts sensor signals into conditioned outputs for continuous monitoring of shaft vibration, axial position, displacement, eccentricity, and gap in rotating machinery. It is widely used in steam turbines, gas turbines, compressors, generators, pumps, and other critical industrial equipment, and is compatible with VM600 machinery monitoring systems for continuous condition monitoring and machine protection applications.
For maintenance engineers and industrial spare parts buyers, the IQS450 204-450-000-002 A1-B21-H10-I1 is often selected for system expansion, scheduled maintenance, and replacement of existing modules. Before purchasing, customers typically focus on compatibility with TQ probes, VM600 systems, configuration code, product condition, testing records, and delivery time. Each unit supplied by us is individually inspected before shipment, with product photos and functional verification available upon request. We support worldwide delivery, provide original industrial automation spare parts, and offer technical assistance for model identification, compatibility confirmation, and after-sales service to help simplify procurement and installation.
Technical Specifications:
| Product Name | Signal Conditioner |
| Model | IQS450 |
| Part Number | 204-450-000-002 |
| Configuration Code | A1-B21-H10-I1 |
| Product Series | Proximity Measurement System |
| Measurement Principle | Eddy-current (Non-contact) |
| Product Type | Signal Conditioner |
| Compatible Sensors | TQ Series Proximity Transducers |
| Compatible Extension Cables | EA Series Extension Cables |
| Compatible Monitoring System | Vibro-Meter VM600 Machinery Monitoring System |
| Typical Applications | Shaft vibration, axial position, shaft displacement, eccentricity, differential expansion, and gap measurement |
| Output Signal | Conditioned signal for compatible monitoring modules |
| Installation | DIN rail mounting / Control cabinet installation |
| Electrical Connection | Terminal block connection |
| Housing Material | Industrial-grade enclosure |
| Operating Environment | Indoor industrial control cabinet |
| Condition | New / Surplus in Original Package (subject to stock availability) |
| Quality Inspection | Visual inspection and functional verification before shipment |
| Country of Origin | Switzerland |
| Warranty | 12 Months |
|
Dimension |
15*14*5cm |
|
Weight |
0.35kg |
| HS code | 8529905000 |
| Shipping Methods | DHL, FedEx, UPS, TNT, or customer-designated carrier |
| Lead Time | In Stock or Subject to Availability |
| Packaging | Anti-static protection, bubble wrap, and reinforced export carton |
IQS450 Manual and PDF Documentation
Main Function of IQS450
The primary function of the IQS450 is signal conditioning within a Vibro-Meter proximity measurement system.
The unit provides the interface between the proximity transducer and the monitoring system.
Its main functions include:
High-frequency excitation of the compatible proximity transducer.
Signal conditioning of the sensor measurement.
Conversion of the proximity measurement into a suitable voltage or current output according to the selected configuration.
Transmission of measurement information to a compatible monitoring or protection system.
Support for continuous monitoring of rotating machine shaft position and vibration.
For the B21 configuration, the output is a voltage signal with a documented sensitivity of 8 mV/µm.
Ordering Code
The IQS450 204-450-000-002 A1-B21-H10-I1 ordering code identifies the exact hardware configuration of the signal conditioner. Each section of the part number corresponds to a specific product configuration defined by the manufacturer, allowing users to confirm compatibility with the selected proximity transducer, extension cable, and machinery monitoring system before installation. Verifying the complete ordering code is recommended when replacing an existing unit or purchasing spare parts for a VM600 monitoring system.
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The B21 configuration is particularly important because it identifies the measurement/output characteristics of the signal conditioner. According to the manufacturer's data sheet: B21 corresponds to 8 mV/µm sensitivity. The typical linear measurement range is 0.15 to 2.15 mm. The corresponding output range is approximately -1.6 to -17.6 V. The H and I options identify additional system-length and installation configuration information. |
----Why Is the Ordering Code Important?
Although IQS450 signal conditioners share the same product family, different ordering codes may correspond to different factory configurations, calibration settings, or system combinations. Using the complete part number helps ensure that the signal conditioner matches the installed TQ series proximity transducer and extension cable, maintaining the calibration characteristics of the entire measurement chain.
When ordering replacement parts, procurement engineers typically verify the following information:
Complete part number (for example: 204-450-000-002 A1-B21-H10-I1)
Existing equipment model and serial number
Compatible TQ series proximity transducer
Extension cable model and length
Applicable VM600 monitoring module or machinery protection system
Quantity required and delivery schedule
Providing the complete ordering code when requesting a quotation helps reduce the risk of ordering an incompatible configuration and simplifies the replacement process during scheduled maintenance or plant shutdowns.
Note: The suffix A1-B21-H10-I1 represents the manufacturer's factory configuration code. It is recommended to order the same configuration as the installed unit unless an alternative configuration has been confirmed by the equipment manufacturer or engineering documentation.
Installation Guide
Correct installation of the Signal Conditioner IQS450 204-450-000-002 A1-B21-H10-I1 is essential for obtaining accurate measurement results. The signal conditioner should always be installed as part of a complete proximity measurement chain, together with the specified TQ series proximity transducer and compatible extension cable. Before installation, verify that the product model, ordering code, and system configuration match the equipment documentation.
Step 1 – Isolate the Equipment
Before beginning installation, shut down the machinery and isolate all power sources according to the plant's lockout/tagout (LOTO) procedures. Ensure that the monitoring system and associated control cabinet are de-energized before connecting or disconnecting any wiring.
Step 2 – Verify the Product
Inspect the signal conditioner for any signs of damage during transportation. Confirm that the part number 204-450-000-002 A1-B21-H10-I1 matches the required replacement model and check that the compatible TQ proximity transducer and extension cable are available before installation.
Step 3 – Install the Signal Conditioner
Mount the IQS450 in the designated control cabinet according to the manufacturer's installation requirements. Ensure sufficient space is available around the module for cable routing, heat dissipation, and future maintenance. Secure the unit firmly to prevent movement caused by cabinet vibration.
Step 4 – Connect the Sensor Cable
Connect the TQ series proximity transducer and extension cable to the corresponding input terminals of the signal conditioner. Verify that all connectors are properly tightened and that cable routing avoids high-voltage power cables, variable-frequency drives, and other sources of electrical interference.
Step 5 – Connect Power and Output Signals
Connect the power supply and signal output terminals according to the system wiring diagram. Confirm that the output wiring is connected to the appropriate VM600 monitoring module or other compatible machinery protection system. Double-check terminal identification before energizing the system.
Step 6 – Perform Functional Verification
After wiring is complete, restore power to the monitoring system and verify that the IQS450 operates correctly. Check the sensor output, gap voltage, and monitoring values to ensure they are within the specified operating range. Confirm that vibration, displacement, or axial position measurements are displayed correctly by the monitoring system.
Step 7 – Final Inspection
After commissioning, inspect all cable connections, mounting hardware, and terminal screws. Ensure that cables are securely fastened and protected from mechanical damage. Record the installation details, product model, and commissioning results as part of the equipment maintenance history for future servicing.
Installation Recommendations:
Install only with compatible TQ series proximity transducers and approved extension cables.
Verify the complete ordering code before replacing an existing signal conditioner.
Follow the equipment manufacturer's wiring diagrams and installation procedures.
Avoid routing sensor cables alongside high-power electrical cables to minimize electromagnetic interference.
Keep connectors clean and dry during installation.
Perform functional verification after installation and before returning the machine to normal operation.
Use qualified personnel for installation, commissioning, and maintenance.
Common Faults
During long-term operation, the Signal Conditioner IQS450 204-450-000-002 A1-B21-H10-I1 may experience abnormal measurements caused by sensor installation, cable damage, wiring errors, power supply issues, or environmental interference. In most cases, the signal conditioner itself is not the only component that should be inspected. The complete measurement chain-including the TQ series proximity transducer, extension cable, and monitoring module-should be checked to identify the source of the problem.
1. No Output Signal
Possible Causes
The power supply is not connected or is outside the specified range.
Loose or incorrect terminal wiring.
Damaged proximity transducer or extension cable.
Internal failure of the signal conditioner.
Recommended Solution
Verify the power supply voltage and wiring.
Inspect all terminal connections.
Test the proximity transducer and extension cable.
Replace the signal conditioner with a verified spare unit if necessary.
2. Unstable Vibration or Displacement Readings
Possible Causes
Probe is not correctly positioned.
Excessive shaft runout.
Electromagnetic interference from nearby equipment.
Loose cable connections.
Recommended Solution
Check the probe installation and gap setting.
Inspect the shaft surface for abnormal conditions.
Route sensor cables away from high-voltage power cables.
Tighten all electrical connections.
3. Gap Voltage Out of Specification
Possible Causes
Incorrect probe-to-target distance.
Probe installed outside its linear measurement range.
Incorrect probe or extension cable combination.
Sensor calibration mismatch.
Recommended Solution
Reset the probe gap according to the equipment manual.
Confirm that the complete measurement chain matches the specified configuration.
Replace incompatible components if required.
4. High Signal Noise
Possible Causes
Poor grounding.
Damaged cable shielding.
Electrical interference from motors or frequency converters.
Moisture entering cable connections.
Recommended Solution
Verify cabinet grounding.
Inspect cable shielding for damage.
Separate sensor wiring from power cables.
Replace damaged cables or connectors.
5. Measurement Drift
Possible Causes
Probe movement caused by loose mounting hardware.
Temperature changes affecting installation conditions.
Aging of associated measurement components.
Mechanical changes in the monitored equipment.
Recommended Solution
Verify probe mounting.
Inspect machine alignment.
Check the complete measurement chain during scheduled maintenance.
Compare current readings with historical trend data.
6. Intermittent Signal Loss
Possible Causes
Loose terminal connections.
Damaged extension cable.
Connector contamination.
Intermittent power supply.
Recommended Solution
Tighten all terminal screws.
Inspect connectors for corrosion or contamination.
Test cable continuity.
Verify power supply stability.
7. Alarm or Trip Triggered Unexpectedly
Possible Causes
Alarm thresholds are configured incorrectly.
Sudden increase in machine vibration.
Sensor installation error.
Signal conditioning abnormality.
Recommended Solution
Review alarm settings within the monitoring system.
Compare vibration trends with previous operating data.
Inspect probe installation and signal quality.
Verify the condition of the IQS450 and the associated monitoring module.
8. Signal Conditioner Cannot Be Recognized During Replacement
Possible Causes
Incorrect part number or ordering code.
Incompatible sensor configuration.
Wiring does not match the original installation.
The replacement model differs from the installed configuration.
Recommended Solution
Verify the complete ordering code (204-450-000-002 A1-B21-H10-I1).
Confirm compatibility with the installed TQ proximity transducer and extension cable.
Compare wiring with the original installation drawings before commissioning.
Preventive Maintenance Recommendations
To reduce unexpected downtime and maintain consistent measurement performance, periodic inspection of the entire proximity measurement system is recommended.
Routine maintenance should include:
Checking probe mounting and mechanical clearance.
Inspecting extension cables and connectors.
Verifying cable shielding and grounding.
Confirming terminal tightness.
Reviewing gap voltage and measurement trends.
Cleaning dust and moisture from the control cabinet.
Recording inspection results for future maintenance planning.
Regular inspection of the complete measurement chain helps identify installation or wiring issues before they affect machinery monitoring performance and supports efficient replacement during scheduled maintenance.
Compatibility With TQ Series Proximity Transducers
IQS450 is not intended to operate as a standalone vibration sensor.
It is part of a complete proximity measurement system and must be matched with the appropriate TQ-series transducer and cable configuration.
Depending on the specific system, compatible TQ4xx families include models such as:
TQ401
TQ402
TQ407
TQ412
TQ423
TQ442
The exact transducer compatibility depends on the selected IQS450 configuration and the applicable system data sheet.
For this reason, customers replacing an existing IQS450 should provide the complete sensor part number together with the IQS450 part number whenever possible.
Related and Cross-Reference Models
The following are related IQS450 configurations documented within the same product family:
204-450-000-002 A1-B21-H10-I0
204-450-000-002 A1-B21-H05-I0
204-450-000-002 A1-B22-H10-I0
204-450-000-002 A1-B23-H10-I0
204-450-000-002 A1-B24-H10-I0
204-450-000-002 A2-B21-H10-I0
204-450-000-002 A3-B21-H10-I0
204-450-000-001 A1-B21-H10-I0
Frequently Asked Questions
Q: Can the IQS450 be used independently?
A: No. The IQS450 must be used in conjunction with compatible TQ series proximity probes and extension cables to form a complete measurement chain (Measurement Chain), and then it can operate normally and be connected to the VM600 or other compatible monitoring systems for data collection and analysis.
Q: What parameters can the IQS450 monitor?
A: Based on the connected probes and monitoring modules, the IQS450 can be used for:
Shaft Vibration
Shaft Displacement
Axial Position
Eccentricity
Differential Expansion
Gap Measurement between Rotor and Stator
Q: Is it necessary to recalibrate the IQS450 after its installation?
A: Generally speaking, if the replacement is of the same model and with the same configuration code, and is used in conjunction with the original probe and extension cable, recalibration is usually not necessary. However, after installation, it is recommended to check whether the Gap Voltage and system measurement values are normal.
Q: How can we determine if the IQS450 is compatible with the existing equipment?
A: The most accurate method is to verify the complete model, configuration code, as well as the models of the accompanying probes and extension cables. If confirmation is not possible, the equipment nameplate or original product photos can be provided for compatibility verification.