Reliable Vibration Monitoring in Harsh Environments
When machinery operates in harsh industrial environments, engineers need vibration sensors that deliver consistent performance without frequent maintenance. The 444-311-000-033 Vibro Meter CE311 piezoelectric accelerometer is designed to meet these demands, offering robust construction and integrated electronics for long-term reliability. This sensor is part of the vibro-meter® product line from Meggitt, a trusted name in industrial monitoring.
Introducing the 444-311-000-033 CE311 Accelerometer
The 444-311-000-033 is a CE311 piezoelectric accelerometer that provides current-modulated output for vibration monitoring. It features a symmetrical shear-mode measuring element using polycrystalline material, ensuring accurate readings over a wide frequency range. The sensor includes integrated electronics for charge-to-current conversion, eliminating the need for an external signal conditioner and simplifying installation.
This model is fitted with an integral cable in a hermetically sealed link, protected by a flexible stainless-steel hose. The sensor and protection tube are hermetically welded together, creating a leak-tight assembly that resists cooling fluids, lubricants, water, steam, and other contaminants. This design makes the CE311 extremely reliable for long-term vibration monitoring in demanding applications.
Technical Specifications and Performance
The 444-311-000-033 offers a sensitivity of 50 µA/g ±5%, with a dynamic measurement range from 0.004 to 40 gpeak. Its frequency response is −3 dB at 2 Hz, with less than ±5% deviation between 6 and 5000 Hz, and less than ±10% between 5000 and 8000 Hz. The mounted resonant frequency is 20 kHz typical, ensuring accurate readings across a broad spectrum.
Operating temperature range for continuous use is −40 to 125°C, with short-term survival up to 150°C for 15 minutes. The sensor requires a power supply of 15 to 28 VDC with a bias current of 5.5 to 7.5 mA. Overload capacity reaches up to 100 gpeak, and shock acceleration tolerance is 500 gpeak, making it suitable for rugged industrial environments.
Applications in Modern Manufacturing
In a typical packaging line application, the 444-311-000-033 helps maintenance engineers detect early signs of bearing wear or imbalance in rotating equipment. Its long-distance signal transmission capability allows placement far from the monitoring system, while the hermetically sealed construction protects against washdowns and dust. This reduces unplanned downtime and extends machinery life.
Another common use is in hazardous areas, where Ex-certified versions of the CE311 are available. The sensor's integrated electronics and current-modulated output simplify wiring and reduce the risk of signal degradation over long cable runs. Engineers can rely on consistent performance even in environments with high humidity, steam, or corrosive agents.
Real-World Application Example
Consider a chemical processing plant where pumps operate continuously in a corrosive atmosphere. By installing the 444-311-000-033 on each pump, maintenance teams can monitor vibration trends remotely. The sensor's stainless-steel construction and hermetically welded protection tube withstand exposure to chemicals and high-pressure washdowns, ensuring accurate data collection without frequent sensor replacement.
Frequently Asked Questions About the 444-311-000-033
What is the sensitivity of the 444-311-000-033 CE311 accelerometer?
The sensitivity is 50 µA/g ±5%, measured at 23°C ±5°C. This provides a consistent output for vibration analysis across the dynamic measurement range of 0.004 to 40 gpeak.
Can the 444-311-000-033 be used in high-temperature environments?
Yes, it operates continuously from −40 to 125°C and can survive short-term exposure up to 150°C for up to 15 minutes. This makes it suitable for applications near engines, turbines, or other heat sources.
How does the integrated electronics simplify installation?
The integrated electronics perform charge-to-current conversion internally, so no external charge amplifier is needed. The sensor outputs a current-modulated signal over a 2-wire system, reducing wiring complexity and enabling long-distance transmission without signal loss.
Why Choose BluePLC Industrial
BluePLC Industrial offers the 444-311-000-033 Vibro Meter CE311 accelerometer with reliable supply and expert support. Our team understands the demands of industrial automation and can help you select the right sensor for your application. Contact us for competitive pricing and fast delivery.
