Yokogawa has developed the Admag AXF series of flowmeters, which it claims to be the world's first magnetic flowmeters with electrode adhesion diagnostics technology and 75/160 Hz dual frequency excitation.
The new AXF series magmeter from Yokogawa incorporates electrode adhesion diagnostics technology and dual frequency excitation
Today's magmeters allow precise and reliable measurement of most process media: chemically aggressive, highly viscous, explosive, sticky and abrasive. While previous Admag meters with dual frequency excitation - for example the AE series - were successfully used in the chemical, pharmaceutical, food and beverage and pulp and paper industries, the new series provide high quality flow measurement with a digital process diagnostic tool - all in the same instrument.
This series has already been used for a long time and with great success in critical flow applications and problem liquids - even under unfavourable installation conditions such as high vibration and pulsed flow with slurries and liquids with suspended solids. The dual frequency of this technology is able to reduce error signals by a factor of 2,5 (>6 dB), ensures a high degree of zero stability with fast response time, and an accurate and stable output signal. The AXF series automatically compensates for internal and external errors. The instrument also has empty pipe detection.
Other features of the AXF-series are electrode-coating detection and its appropriate status alarm, removable electrodes starting for meters greater than DN15, increased compensation of error signals (fluid/noise detection) by >6 dB, the ability to measure liquids with a conductivity of as low as 1 μS/cm. AXF magmeters are customised via a multilingual menu-driven display interface with optical infrared setting switches. All instrument outputs conform to NE43.
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