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Yokogawa ADMAG AXW Magnetic Flowmeters high accuracy flow meter AXW025 AXW050 AXW080
Introduction
The ADMAG Total Insight (TI) series ADMAG AXW adopts the "Total Insight" concept and totally support the product life cycle.
ADMAG AXW magnetic flowmeter is a high-quality and highly reliable product developed based on years of experience and achievement, such as enhancement of application by our proprietary dual frequency excitation method.
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Specification
| output | 4 to 20 mA DC |
| Weight | 100kgs |
| Temperature Limits | 20 to 140°F |
| Accuracy | ±0.35% |
| Size | 500 to 1800 mm |
Working principle
By combining the signals obtained by low frequency excitation and high frequency excitation, it is our unique revolutionary excitation method that has succeeded in covering each defect and extracting only the superiority.
It combines the advantages of low frequency excitation zero points stability, high frequency excitation noise resistance and high speed response.
make the pointer still refers to the zero When applying different pressure (general high pressure end is higher than low pressure end), the force of two bellows acting on the movable bracket is not equal, so that the corresponding displacement is produced respectively, and drive the gear transmission mechanism to drive and to enlarge, indicating the differential pressure between the two after the pointer is deflect.
Performance characteristic
• Easy to read gage through undistorted plastic face permits viewing from far away
• Patented design provides quick response to pressure changes means no delay in assessing critical situations
• Durable and rugged housing and high-quality components combine to provide long service life and minimized down-time
• High accuracy option is twice as accurate as the standard Magnehelic® gage
The fluid noise that appears when measuring slurry fluid or low conductivity fluid has "1/f characteristics".
In other words, low frequency components tend to be noisy, while high frequency components tend to be less noisy.
Therefore, high frequency excitation is effective to ensure noise resistance.
However, in conventional high frequency excitation, there was a problem that "zero points become unstable".
In "Dual Frequency Excitation Method", sampling is performed in the area not affected by noise on the high frequency side, and stable zero points components are extracted with a large time constant on the low frequency side.
Therefore, the synthesized signal has a very small effect of noise and stable zero points.
ADMAG AXW can be equipped with a microSD card (optional) and can backup / restore / duplicate parameter information using the microSD card or a memory with a built-in LCD.
In order to realize the stability of the zero points while reducing the influence of noise, the time constant is generally increased.
But that would hurt responsiveness.
The solution is "Dual Frequency Excitation Method" how to simultaneously meet the effects of noise reduction, zero points stability and response.
In “Dual Frequency Excitation Method”, high-speed response of “0.1 seconds” is possible because the change in flow rate is detected on the high frequency side.