Solving Vibration Monitoring Challenges in Harsh Environments
When machinery operates in harsh industrial environments or hazardous areas, standard vibration sensors often fail due to contaminants, temperature extremes, or signal degradation over long distances. Engineers need a robust solution that delivers reliable data without frequent maintenance. The Vibro Meter 444-311-000-013 CE311 piezoelectric accelerometer addresses these pain points directly, offering a hermetically sealed design and integrated electronics for consistent performance.
Introducing the 444-311-000-013 CE311 Accelerometer
The 444-311-000-013 is a CE311 piezoelectric accelerometer from Meggitt's vibro-meter product line. It is specifically engineered for vibration monitoring and protection of machinery in harsh industrial environments and/or hazardous areas. This sensor features a symmetrical shear-mode measuring element using polycrystalline material, ensuring accurate and stable readings.
Integrated electronics perform charge-to-current conversion, eliminating the need for an external signal conditioner. The current-modulated output (2-wire system) enables long-distance signal transmission without significant loss, making it ideal for large plant installations.
Technical Specifications and Performance
The 444-311-000-013 delivers a sensitivity of 50 µA/g ±5%, with a dynamic measurement range of 0.004 to 40 gpeak. Its frequency response spans 2 to 8000 Hz, with ±5% accuracy between 6 and 5000 Hz. The sensor operates continuously from −40 to 125°C and can survive short-term exposure up to 150°C for 15 minutes.
Overload capacity reaches up to 100 gpeak, and the mounted resonant frequency is 20 kHz typ. Transverse sensitivity is less than 3% at 15 Hz with 5 g. These specifications ensure reliable vibration data even in demanding conditions.
Applications in Modern Manufacturing
In a typical packaging line application, the 444-311-000-013 monitors bearing vibration on high-speed conveyors. The hermetically welded stainless steel construction protects against cooling fluids, lubricants, and water, ensuring uninterrupted operation. The sensor's 50 µA/g sensitivity detects early signs of imbalance or misalignment, allowing predictive maintenance before costly breakdowns occur.
Another common use is in chemical processing plants where explosive atmospheres exist. The CE311 is available in Ex versions certified for potentially explosive atmospheres, providing safe and accurate vibration monitoring. The integral cable with flying leads simplifies installation in confined spaces.
Real-World Application Example
Consider a steel mill where rolling mill motors operate near molten metal. The 444-311-000-013's temperature range of −40 to 125°C and shock resistance up to 500 gpeak make it suitable for this environment. The sensor transmits vibration data over long distances to a central monitoring system, enabling operators to detect bearing wear or shaft misalignment early, reducing unplanned downtime.
Compatibility and Integration
The CE311 accelerometer works with a 2-wire current-modulated output system. It requires a power supply of 15 to 28 VDC with a bias current of 5.5 to 7.5 mA. For signal processing, it can connect to a galvanic separation unit or monitoring system electronics. The flying leads connection allows straightforward integration into existing vibration monitoring networks.
Frequently Asked Questions About the 444-311-000-013
What is the sensitivity of the 444-311-000-013 accelerometer?
The sensitivity is 50 µA/g ±5%, measured at 23°C ±5°C. This high sensitivity allows detection of very low vibration levels down to 0.004 gpeak.
Can the 444-311-000-013 be used in hazardous areas?
Yes, the CE311 is available in standard versions and Ex versions certified for use in potentially explosive atmospheres. The specific part number 444-311-000-013 is a standard version; please contact BluePLC Industrial for Ex version availability.
What is the maximum cable length for the 444-311-000-013?
The sensor is supplied with an integral cable. The cable capacitance is 105 pF/m for pole-to-pole and 200 pF/m for pole-to-casing. For specific cable length requirements, refer to the official documentation or contact BluePLC Industrial.
Why Choose BluePLC Industrial for Your CE311 Needs
BluePLC Industrial specializes in sourcing and supplying industrial automation spare parts, including the Vibro Meter 444-311-000-013. We ensure product authenticity and provide competitive pricing. Our team can assist with technical inquiries and order processing, helping you maintain reliable vibration monitoring in your facility.
