Making The Right Choice Of Level Measurement Sensor
April 25, 2011 by Celebration
Filed under Web News
Integral to process control in many industries, level measurement sensors fall into two main types. Individual sensors point a single (usually pre-set) liquid or solid height or level and work as an alarm for overfill or underfill conditions. Continuous level sensors are more sophisticated and can provide level monitoring of an entire system. Fluid or flowing solids levels within a range can be measured, rather than a single point, producing an output that directly correlates to the level a vessel.
The main points to consider in selecting the correct measurement level sensor for your application are if continuous measurement or point level measurement is required. You should also factor in whether you’re measuring a liquid or solid and the temperature and pressure ranges likely to be encountered. You will also need to to make the decision whether or not you need contact or non-contact level measurement in order to avoid contamination or ensure sensor survivability in hostile environments. For solids level detection spanning a wide density range non-contact vibrating level switches may be used. From the material’s surface A short sound pulse is reflectedand the device calculates the time between reception and transmission as to whether level or volume are chosen. Increasingly sophisticated echo interpretation software filters out false signals.
For an increase in sensitivity, Nucleonics measuring devices can monitor interface and weight, level, density and are excell at non-contact applications. The detectors are mounted externally to the vessel or process and can be easily accessed, installed or removed. They also have no moving parts to wear or fail. Similar benefits come from the use of radar-based technology. These level transmitters pass millions of intermittent microwave pulses every second. Real time level information is updated from the continuous stream and evaluated many times a second. These devices will deliver data that is accurate on almost any liquid or solid, whether in storage or during processing. The readings obtained are unaffected by changes to the product such as temperature, pressure, density, or conductivity caused by the process itself and the unit is immune to the effects of vapours or dust.
Celebration News- Selling to a Woman Vs Selling to a Man
- Free Website Promotion...Why Not?
- Volpe Packaging: Great Designs for Custom Printed Folders
- Make Extra Cash With These Affiliate Marketing Methods
- Online Guitar Lessons Vs Personal Guitar Lessons
Comments
Feel free to leave a comment...
and oh, if you want a pic to show with your comment, go get a gravatar!