Servo-accelerometer SX41800

Servo-accelerometer SX41800

Servo-accelerometer SX41800

Product catalog summary
Overview
Meggitt Sensing Systems specializes in various measurement products including LVDTs, inertial systems, inclinometers, accelerometers, IMUs, MEMS sensors, servo-inclinometers, and conditioners. Their products serve sectors such as aerospace, energy, measurement, and railway.

Product Highlight: Sensorex SX41800
The Sensorex SX41800 is a high-performance digital and analogue servo-accelerometer designed for severe environments. It features both analog (±5V) and digital (RS485) outputs, and is known for its long-term stability and outstanding performance. It is compliant with European standards for electromagnetic compatibility and is oil-damped for enhanced shock and vibration resistance.

Applications
  • Linear acceleration/deceleration measurements
  • Automatic train position control (ATC, ATP, ERTMS)
  • Low frequency vibration measurements (seismic monitoring)
  • Structure and building movement monitoring

Technical Specifications
  • Outputs: Voltage output ±5V and digital RS485
  • Power Supply: 9V to 30V
  • Consumption: < 40 mA
  • Bandwidth: 0.01Hz to 3Hz adjustable
  • Non-linearity: < 0.02% of FS
  • Cross-axis sensitivity: < 0.005g/g
  • Bias: < 0.02% of FS
  • Bias stability over 1 year: ±2.5mg
  • Analogue output sensitivity: Ranges from 49V/g to ±4.9V/g depending on the model
  • Tolerance on sensitivity: 0.2%
  • Sensitivity stability over 1 year: ±2500ppm
  • Resolution: Digital output 0.002% of FS, Analogue output 0.01% of FS
  • Electrical noise: < 1mVrms (3Hz-300kHz)
  • Zero thermal drift: 50ppm/°C (0.005% of FS/°C)
  • Sensitivity thermal drift: 100ppm/°C
  • Output impedance: 10Ω
  • Operating temperature: -40°C to +85°C
  • Storage temperature: -55°C to +85°C
  • Vibrations: 10g / 20Hz to 2000Hz
  • Shocks: 500g / 1ms
  • Protection: IP 65

Selection Guide
The product is available in different ranges with corresponding product codes:
  • ±0.1g - Product code: 690041832
  • ±0.25g - Product code: 690041842
  • ±0.5g - Product code: 690041852
  • ±1g - Product code: 690041862

Contact Information
Meggitt (Sensorex)
Archamps Technopôle
196 Rue Louis Rustin
74166 ARCHAMPS- France
Tel: 04 50 95 43 70
Fax: 04 50 95 43 75
Website: www.sensorex.fr, www.meggitt.com
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Catalog excerpts

Servo-accelerometer SX41800-1

Aerospace Energy Measurement Railway Sensorex® High performance digital & analogue servo-accelerometerSX41800 KtUb bySensorex mart ensor Characteristics • Analog output (±5V) & digital output (RS485) • Specially designed for severe environments (shocks, vibrations, electromagnetic perturbations) • Very long term stability • Out standing performances • Conform to European Standard of Electromagnetic Compatibility • Oil damped servo mechanism • Autotest function Meggitt (Sensorex) SX41800 is a high performance digital RS485 (MODBUS) servo-accelerometer designed to deliver an output proportional to acceleration. The incorporation of an optical infrared sensor and an inertial mass with servo feedback, as well as optical position measurement and friction-free mounting, gives the SX41800 outstanding accuracy, long term stability and high reliability. Unit can directly interface with any standard PC, with fully user-selectable acquisition and set-up parameters. Analog voltage output is also available. Moreover, an integrated auto-test function enables checks of servo loop and associated functions. Also, the damped servo mechanism being fully oil immersed, this device offers high resistance to shocks and vibrations. Meggitt (Sensorex) SX41800 is also CE EN 50155 railway norm & CE EN 61326 norm qualified. Principle: A galvanometer located within the core of this sensor is sensitive to the effects of gravity. While subjected to acceleration, the inertial mass, mounted on a coil, tends to move with respect to the sensitive axis. This movement is then measured by an optical detector and converted into a current. The current brings the inertial mass back to its original position. By measuring the required current for maintaining pendulum stability, the servo-accelerometer produces an output that is proportional to the applied acceleration. Our measurement product competencies: LVDTs | Inertial systems | Inclinometers | Accelerometers | IMU | MEMS sensors | Servo-inclinometer | Conditioners • Linear acceleration/ deceleration measurements • Automatic train position control (ATC, ATP, ERTMS) • Low frequency vibration measurements (seismic monitoring) • Structure and building movement monitoring MEGGiTT smart engineering for extreme environments

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Servo-accelerometer SX41800-2

Aerospace Energy Measurement Railway Sensorex® High performance digital & analogue servo-accelerometer SX41800 Outputs Power supply Consumption Bandwidth Non linearity Cross axis sensitivity Bias Bias stability over 1 year Analogue output sensitivity Tolerance on sensitivity Sensitivity stability over 1 year Resolution Electrical noise Zero thermal drift Sensitivity thermal drift Output impedance Operating temperature Storage temperature Selection guide Range Product code Note: accelerometers are supplied with a 2 meter shielded cable and a 8 pin M12 connector. MEGGiTT smart engineering for extreme...

 Open the catalog to page 2
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.