Description
1. Product Overview
Metrix 5485C‑007‑010‑M1377 is an industrial high-temperature seismic velocity vibration sensor of the 5485C series manufactured by Metrix, USA. It is designed for vibration monitoring of equipment operating under high-temperature conditions such as gas turbines, steam turbines and high-temperature fans. Adopting a moving-coil self-generating structure, this sensor outputs a standard analog signal proportional to equipment vibration velocity without external power supply. It features high temperature resistance, excellent stability, anti-interference performance, maintenance-free operation and high measurement accuracy.
This model configuration corresponds to a standard sensitivity of 150 mV/in/s, 10-foot armored cable and high-temperature explosion-proof certification. It can operate continuously under extreme high-temperature environments up to 375°C. Widely deployed in power, petrochemical, metallurgy, heavy energy and other industries, it performs condition monitoring, fault early warning and system protection for critical rotating machinery, serving as the standard core sensor for vibration measurement under high-temperature working conditions.
2. Functional Features
2.1 Self-Generating Passive Structure, No External Power Required
Based on the classic moving-coil seismic sensing principle, it adopts a purely mechanical electromagnetic induction self-power generation design. No external power supply or driver module is needed; standard analog velocity signals are generated by equipment vibration. Free from risks of electronic component aging and circuit faults, the unit has an extremely simple and reliable structure. It fundamentally eliminates measurement anomalies caused by power failure or voltage fluctuation of active sensors, making it suitable for long-term non-stop on-line industrial monitoring with low maintenance cost.
2.2 Excellent High-Temperature Resistance for Extreme Working Conditions
Constructed with high-temperature resistant stainless steel housing, special heat-resistant cables and insulating materials, the sensor can withstand ambient temperature up to 375°C. It is ideal for high-temperature applications inaccessible to conventional sensors, including gas turbines, high-temperature flue gas equipment, waste heat units and high-temperature rotating machinery. No zero drift, sensitivity attenuation or signal distortion occurs during prolonged high-temperature operation, delivering industry-leading measurement stability in hot environments.
2.3 Accurate Vibration Measurement with Frequency Response Matched to Industrial Equipment
Its standard frequency response range is 15 Hz ~ 2 kHz, which precisely covers fundamental and harmonic vibration signatures of industrial rotating machinery. It effectively captures vibration signals induced by rotor unbalance, misalignment, bearing wear, base looseness and other equipment faults. This fixed-sensitivity model outputs 150 mV/in/s with coil internal resistance of 105 Ω. The output analog signal boasts superior linearity and high resolution without mechanical friction loss or clipping distortion, ensuring accurate and stable measurement data.
2.4 Armored Cable Protection, Wear-Resistant for Industrial Sites
Comes with a 10 ft (approx. 3 m) industrial armored cable. The outer sheath is tensile, crush-resistant, abrasion-proof, oil-resistant and anti-thermal aging. It can withstand mechanical pulling, equipment vibration, dust and oil contamination in workshops. The cable is integrally assembled with the sensor body, removing loose connection risks of separable plugs. Stable signal transmission is maintained to avoid poor contact and signal interruption.
2.5 Explosion-Proof Certification for Compliance in Hazardous Locations
Certified with official EX explosion-proof approval, the sensor is applicable to flammable and explosive high-risk industrial environments such as petrochemical, chemical and gas power generation plants. It operates safely and stably in explosive gas atmospheres and fully complies with industrial explosion-proof construction and equipment acceptance specifications for wider application scope and enhanced operational safety.
2.6 Standardized Mounting Structure Compatible with Mainstream Industrial Equipment
It features a 4-hole flat-base standard mounting design compatible with original mounting positions of most industrial gas turbines and rotating machinery. No custom brackets or equipment structural modification are required. The installation achieves precise alignment and firm fastening to resist vibration-induced displacement. It can also be fitted with an 8531 adapter base for stud mounting to meet diverse field installation requirements with great versatility.
3. Model Code Definition
5485C: Series designation for Metrix high-temperature velocity vibration sensor 007: Sensitivity parameter, representing 150 mV/in/s sensitivity and 105 Ω coil resistance 010: Cable length parameter, representing 10-foot integrated armored cable M1377: Custom configuration code for high-temperature explosion-proof industrial standard version
4. Technical Specifications
4.1 Basic Specifications
Part Number: 5485C‑007‑010‑M1377；Brand & Manufacturer: Metrix (USA)；Product Type: High-temperature seismic velocity vibration sensor；Core Application: Vibration monitoring, equipment condition diagnosis, fault early warning and unit protection interlock for industrial high-temperature rotating equipment；Applicable Machinery: Gas turbines, steam turbines, high-temperature fans, waste heat generator sets and heavy-duty high-temperature rotating machinery；Operating Characteristics: High temperature resistant, explosion-proof, passive self-generating, maintenance-free.
4.2 Measurement Performance Parameters
Measuring Principle: Moving-coil electromagnetic induction self-generating principle；Nominal Sensitivity: 150 mV/in/s；Coil Internal Resistance: 105 Ω；Frequency Response: 15 Hz ~ 2 kHz；Measurement Accuracy: Factory calibrated ±5%, field allowable tolerance ±10%；Signal Output: Pure analog velocity voltage signal with high linearity and no distortion；Resolution: Continuous analog resolution, free of mechanical friction error.
4.3 Temperature & Environmental Parameters
Max Operating Temperature: 375℃；Storage Temperature: -40℃ ~ +400℃；Explosion-proof Class: Industrial EX explosion-proof certification；Environmental Resistance: High temperature resistance, moisture resistance, dust resistance, oil resistance, EMI immunity and mechanical vibration resistance；Calibration Interval: Professional metrology calibration recommended every 3 years.
4.4 Mechanical & Wiring Parameters
Housing Material: All stainless steel industrial corrosion-resistant housing；Connector: 2-pin MIL male aviation connector；Cable Specification: 10FT (approx. 3 m) integrated armored cable；Mounting: 4-hole flat base standard mounting, compatible with 8531 adapter base for stud mounting；Weight: Sensor body approx. 0.2 kg, cable approx. 0.2 kg/m；Structural Feature: Integrated hermetic sealing design without loose or vulnerable components.
5. Hardware Configuration & Structural Advantages
5.1 Passive Self-Generating Architecture for Zero-Maintenance High Reliability
Unlike active vibration sensors, this unit operates purely via mechanical electromagnetic induction without circuit boards, chips or power supply requirements. It fundamentally eliminates electronic component failure, circuit damage and measurement anomalies caused by power fluctuations under high temperature. The robust structure suffers minimal degradation during continuous high-temperature operation and requires almost no routine maintenance, greatly cutting maintenance costs and downtime frequency.
5.2 375℃ Ultra-High Temperature Resistance, Ideal for High-Temperature Units
Adopting Metrix proprietary high-temperature material formulation and sealing technology, it breaks the temperature limit of conventional sensors and delivers stable long-term operation at up to 375℃. It is a dedicated core sensor for vibration monitoring of gas turbines and high-temperature thermal equipment. No zero drift, signal attenuation or structural deformation occurs under high-temperature conditions to sustain reliable measurement data.
5.3 Integrated Armored Cable for Industrial Durability
The sensor and armored cable form an integrated hermetically sealed assembly with outstanding tensile, compressive, abrasion and thermal aging resistance. It withstands heavy vibration, mechanical friction, dust, oil and thermal radiation on site. It avoids common defects of split cables such as looseness, damage and signal disconnection and significantly improves equipment durability.
5.4 High-Linearity Precision Measurement for Sensitive Fault Detection
The 15 Hz ~ 2 kHz wide frequency response fully covers fault frequency bands of industrial rotating machinery. Its standard 150 mV/in/s sensitivity is compatible with mainstream industrial monitoring and PLC control systems. The linear and high-resolution output precisely captures minor vibration anomalies to predict bearing wear, rotor defects and structural looseness, providing accurate data for equipment maintenance, fault alarming and unit interlock protection.
5.5 Explosion-Proof Compliant Design for Full Coverage of Hazardous Locations
Fully certified for explosion protection with sealed flameproof construction free of electric spark risks. It meets safety standards for flammable and explosive environments in petrochemical, gas and chemical industries, supporting long-term stable operation in harsh hazardous sites with wide applicability and high safety compliance.
6. Application Scenarios
- Power & Energy Industry: Online vibration monitoring and unit protection for core high-temperature rotating equipment including gas turbines, steam turbines, waste heat generator sets, high-temperature fans and induced draft fans.
- Petrochemical Industry: Vibration condition monitoring, fault early warning and safety interlock control for high-temperature process units, gas power equipment and rotating machinery within explosion hazardous areas.
- Metallurgy & Heavy Industry: Long-term online condition monitoring of fans for high-temperature kilns, high-temperature conveying equipment and heavy-duty rotating machinery to ensure stable continuous production.
- Retrofit & Maintenance of Industrial Equipment: Replacement of faulty sensors and system upgrade for legacy high-temperature vibration monitoring systems. Plug-and-play compatibility with existing Metrix monitoring systems without system modification.
- Research & Condition Testing: High-temperature equipment vibration data acquisition, condition testing, equipment performance inspection and fault root cause analysis to satisfy high-precision industrial measurement requirements.
7. Product Advantages
- Ultra-high temperature resistance with exclusive suitability for hot working conditions: Rated for extreme temperature up to 375℃, it is specially designed for various high-temperature power equipment and resolves industry pain points of conventional sensors failing or losing accuracy at high temperature, making it the preferred sensor for high-temperature unit vibration monitoring.
- Passive maintenance-free design with superior operational stability: Self-generating passive design independent of external power, free from electronic faults. The rugged construction maintains zero drift and low failure rate over long service life, reducing maintenance cost and shutdown risk.
- Standard parameters for broad system compatibility: 150 mV/in/s universal sensitivity compatible with mainstream domestic and overseas vibration monitoring and PLC systems. Direct connection to monitoring platforms without signal conversion delivers excellent interoperability.
- Explosion-proof multi-layer protection for safe operation in harsh environments: Combined protection package including explosion-proof certification, corrosion-resistant stainless steel housing and armored cable, offering high temperature resistance, corrosion resistance, abrasion resistance and anti-interference capability for complex industrial environments.
- Easy installation and replacement with excellent cost performance: Standard universal mounting dimensions enable in-situ replacement for new and old equipment. No equipment or program modification required. Simple installation and commissioning lower spare part replacement cost and improve equipment availability.
