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1. How to cut off the small signal of Yokogawa ADMAG SE 204mm electromagnetic flowmeter
The small signal cut-off function of Yokogawa ADMAG SE 204mm electromagnetic flowmeter can be adjusted by entering the setting menu through the local button or communication interface. 1. Operation steps • Enter parameter setting mode: Enter the setting menu Senpai through the buttons of the flowmeter body or the HART/RS-485 communication interface (with the help of a handheld device or software), and find the "Flow Cutoff" or "Low Flow Cutoff" option. • Set cut-off value: The cut-off threshold can be expressed in flow units (such as m ³/h) or full scale percentage (%), and empirical values are recommended to be set at 0.5% -5% full scale (0.1% -1% for high-precision applications). For example, when the range is 100m ³/h, 0.5-5m ³/h can be set. • Select the cutting mode: zero mode (output 0 when the flow rate is below the threshold) or hold mode (this mode maintains the previous valid value, suitable for situations that require continuous recording). • Save and exit: After confirming the parameters, save and observe whether the display is stable.
2. Precautions - For media with low conductivity or containing bubbles, the cut-off value should be appropriately increased to avoid noise interference. -In batch processing or intermittent processes, it is necessary to ensure that the cutting and trimming values do not affect the flow records during the start stop phase. -After long-term use, electrode contamination or changes in operating conditions require recalibration of the cut-off value. -If the air traffic control detection function is supported, it can be linked with small signal cutoff to improve reliability.
2>2. Can the header of the Yokogawa EJA vortex flowmeter turn?The header of the Yokogawa EJA vortex flowmeter can usually turn, and the operation needs to be standardized.
. The head design of the Yokogawa EJA series vortex flowmeter has taken into account on-site operational requirements, and its mechanical structure allows for angle adjustment. This design is commonly used to solve human-machine interaction problems when the installation position of the body is limited, such as high-level pipeline installation or narrow side space scenarios. two Optimization of the perspective of the core application scenario: When the flowmeter is vertically installed on a high-level old and dry pipeline, the meter head can be rotated 180 ° to make the display screen face downwards; When installed on the side of a horizontal pipeline, it can rotate horizontally by about 90 ° -120 °, ensuring that the operator can clearly read parameters such as instantaneous flow rate and cumulative value on the regular inspection channel. three Standard operating procedure steps decomposition: ① Deactivate the associated banquet hall control system and execute the safety locking procedure ② Loosen the 4 M8 fixing bolts on the bottom flange of the meter head with an Allen wrench ③ Rotate the meter head clockwise along the axis (maximum allowable torque is 5N · m) ④ After visually verifying the display direction of the LCD screen, tighten the bolts gradually in a cross manner. Note that for some models with Hart communication protocol, rotating the angle beyond 270 ° may cause signal wire entanglement. At this time, it is recommended to disconnect the wiring terminals first. four The special model difference is that the EJA110A mechanical he
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