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『Flow meter counter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. How to determine the direction of the flowmeter?
The direction of the flowmeter needs to be determined based on the type through identification arrows, internal structure, or instructions. The core methods are as follows:
1. The determination of the fluid direction of the sail, equipment, water meter mainly relies on two points: 1 Dial Arrow: The dial is cast with arrow markings, and the direction of the arrow indicates the direction of water flow. two Import and export labeling: The table body is usually labeled with "inlet" and "outlet", with water flowing from the inlet to the outlet. The direction of water flow impact on the internal impeller is consistent with the arrow.
Secondly, the flow arrow stopper on the electromagnetic flowmeter housing or sticker is the core judgment basis.
. During installation, it is necessary to ensure that the fluid direction inside the pipeline is consistent with the arrow. If the standard balance is unclear, refer to the installation diagram in the equipment manual to avoid measurement errors caused by reverse connection.III. The smoothness of turbine rotation in a turbine flowmeter depends on the flow direction: 1 Shell arrow: The flow arrow marked on the body directly corresponds to the direction of fluid entry. two Turbine rotation direction: The water flow needs to impact from the front of the turbine blades to ensure forward rotation of the turbine. Reverse installation can easily lead to abnormal counting or mechanical wear.
4. The installation direction of the ultrasonic flowmeter sensor determines fluid recognition: 1 Instructions: The upstream sensor (transmitter) and downstream sensor (receiver) need to be fixed at the specified di
2. Doppler flowmeter
3. Mitsubishi PLC high-speed counter application case (motor speed measurement, flowmeter, servo synchronization, grating ruler control...
Case 1 motor speed measurement application is aimed at measuring motor speed (encoder has 400 pulses per revolution), without considering distance, only using SPD command for pulse density measurement. Set X0 as the measurement of electricity, specify 1000ms (i.e. 1s) as the measurement time, and read the number of pulses received per second to DO. Use FLT command to convert D0 data into floating-point numbers, with the rotation speed positioning unit in revolutions per minute. Perform unit conversion: multiply by 60 (seconds to minutes), then divide by encoder resolution of 400, which is 0.15, to obtain the correct rotation speed unit. Case 2: Synchronous control of servo motor achieves synchronization between the motor and servo motor, with the encoder connected to the servo pulse input port (Panasonic A5 model). Ensure that the servo is enabled and pulse ports A/B are connected, and provide 24V power to pins 7 and 29 of the motor driver to power on the motor and maintain the enabled state. The encoder outputs NPN and is connected to p