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1. User Manual for Fuji Electric FLR/FLS/FLY Ultrasonic Flow Meter: [2]
The core content of the Fuji Electric FLR/FLS/FLY Ultrasonic Flow Meter User Manual is as follows:
1. Product Overview The Fuji Electric FLR/FLS/FLY series ultrasonic flow meter uses the time difference measurement principle to calculate the flow rate by detecting the time difference between the forward and backward propagation of ultrasonic waves in the fluid, and combines it with the cross-sectional area of the pipeline to obtain the flow rate. The product has the characteristics of non-contact measurement, high precision, wide range ratio, and low maintenance, and is suitable for flow monitoring of media such as water, sewage, and chemical liquids.
2. Installation and Debugging: The pipeline material should be uniform, avoiding heterogeneous materials such as cast iron and cement.
; The installation location should be far away from interference sources such as pumps and valves. The length of the upstream straight pipe section should be ≥ 10DN, and the downstream should be ≥ 5DN (DN is the nominal diameter of the pipeline); The installation angle of the sensor should be perpendicular to the pipeline axis, with an error of ≤± 2 °. Debugging steps: Connect the sensor to the host and ensure that the signal line shielding layer is grounded; Input pipeline parameters (material, inner diameter, wall thickness, etc.) through the host panel or upper computer software; Perform the zero calibration function to eliminate static fluid interference; Simulate flow signal testing to verify whether the measurement accuracy meets the nominal value (usually ± 1%~± 2%).III. Operation Method: The daily operation host panel is equipped with a LCD display screen, which can display real-time parameters such as instantaneous flow rate, cumulative flow rate, and flow rate.
; Switch the display interface or adjust the measurement unit (such as m ³/h, L/s) by pressing the button; Supports 4-20mA analog output, RS485 digital communication, and can be connected to PLC or SCADA systems. The data query historical data storage function can record the measurement data of the past 30 days; Export data reports through upper computer software, supporting Excel format.IV. Common Malfunctions and Solutions Malfunction 1: Low Signal Strength Causes: Excessive installation gap of sensors, scaling on the inner wall of pipelines, fluid containing bubbles or impurities;
; Solution: Adjust the sensor position to the specified gap (usually 1/10 of the inner diameter of the pipeline), clean the inner wall of the pipeline, and eliminate bubbles. Fault 2: Large fluctuations in measurement values due to unstable fluids (such as turbulence), loose sensors, and electromagnetic interference; Solution: Increase the length of the straight pipe section, tighten the sensor, and check if the signal line shielding layer is grounded. Fault 3: Zero drift Reason: Environmental temperature changes, sensor aging; Solution: Perform zero calibration again. If the problem persists, replace the sensor. 5. Maintenance and upkeep: Regularly check the cleanliness of the sensor surface and wipe away dirt with a soft cloth; Check if the signal line connection is loose every 6 months; Avoid long-term use in high temperature, high humidity, or corrosive environments; When not in use for a long time, the power should be disconnected and covered with a dust cover. 6、 Precautions: It is stri