Reliable Vibration Monitoring in Demanding Conditions
When machinery operates in harsh industrial environments or hazardous areas, engineers need sensors that deliver accurate data without failure. The 444-311-000-043 Vibro Meter CE311 piezoelectric accelerometer meets this challenge with a robust design and integrated electronics. This sensor provides a current-modulated output for long-distance signal transmission, making it a dependable choice for continuous vibration monitoring.
Key Technical Specifications of the 444-311-000-043
The CE311 accelerometer offers a sensitivity of 50 µA/g ±5%, ensuring precise measurement across its dynamic range of 0.004 to 40 gpeak. Its frequency response spans 2 to 8000 Hz, with a resonant frequency of 20 kHz typ. when mounted. The sensor operates continuously from -40 to 125°C and can survive short-term exposure up to 150°C for 15 minutes. These specs make it suitable for extreme temperature environments.
Power requirements are 15 to 28 VDC with a bias current of 5.5 to 7.5 mA. The sensor uses a 2-wire current-modulated output system, simplifying integration with existing monitoring systems. Its hermetically welded stainless steel construction protects against cooling fluids, lubricants, water, steam, and other contaminants, ensuring long-term reliability.
Applications in Harsh Industrial and Hazardous Areas
The 444-311-000-043 excels in vibration monitoring for rotating machinery such as pumps, compressors, fans, and turbines in industries like oil and gas, chemical processing, and power generation. Its integral case insulation and availability in Ex versions certified for explosive atmospheres make it ideal for hazardous locations. In a typical refinery application, the sensor can be mounted on a critical pump to detect early signs of bearing wear or imbalance, preventing unplanned downtime.
Another common use is in steel mills where high temperatures and contaminants are present. The CE311's hermetically sealed design withstands dust, moisture, and thermal shock, providing consistent data for predictive maintenance programs. This helps facilities reduce maintenance costs and extend equipment life.
Real-World Application Example
Consider a chemical plant monitoring a large compressor in a Zone 1 hazardous area. The 444-311-000-043, with its Ex certification and rugged stainless steel housing, can be installed directly on the compressor casing. Its 50 µA/g sensitivity and wide frequency range capture both low-speed and high-speed vibration signals, enabling early fault detection. This proactive approach minimizes safety risks and production losses.
Compatibility and Integration
The CE311 accelerometer integrates seamlessly with galvanic separation units and monitoring system electronics. Its 2-wire current-modulated output simplifies wiring and reduces installation costs. The sensor comes with an integral cable (twisted pair, shielded) protected by a flexible stainless-steel hose, ensuring signal integrity over long distances. For mounting, it uses four M6 × 35 Allen bolts with a torque of 15 Nm, providing secure attachment to machinery.
Frequently Asked Questions About the 444-311-000-043
What is the sensitivity of the 444-311-000-043 accelerometer?
The sensitivity is 50 µA/g ±5%, measured at 23°C ±5°C. This provides a linear output over the dynamic measurement range of 0.004 to 40 gpeak.
Can the CE311 be used in explosive atmospheres?
Yes, the CE311 is available in standard and Ex versions certified for use in potentially explosive atmospheres. The specific Ex certification details should be confirmed with the manufacturer or BluePLC Industrial.
What is the temperature range for continuous operation?
The sensor operates continuously from -40 to 125°C (-40 to 257°F). It can survive short-term exposure up to 150°C for a maximum of 15 minutes.
How is the sensor protected against environmental contaminants?
The sensor and its integral protection tube are made of stainless steel and hermetically welded together. This creates a leak-tight assembly impervious to 100% relative humidity, water, steam, oil, sea-salt atmospheres, dust, fungus, and sand.
Why Choose BluePLC Industrial for Your CE311 Needs
BluePLC Industrial offers genuine Vibro Meter spare parts with reliable supply chain support. Our team understands the critical nature of vibration monitoring in industrial automation. We provide detailed product information and assistance to help you select the right sensor for your application. Contact us for pricing and availability of the 444-311-000-043.
