1. What is the general installation spacing of sensors for ultrasonic flow meters? The installation spacing of sensors for ultrasonic flow meters needs to be determined according to the pipeline diameter, fluid type, ultrasonic model, and industry standards. The general range is generally between 0.5m and 10m, and specific requirements need to be strictly matched with the official product manual.

1. General selection reference range 1 Small caliber pipelines (DN10~DN50): The installation spacing is usually 0.5m~2m, and it is necessary to ensure that the upstream and downstream straight pipe sections meet the requirements of at least 10 times the diameter of the pipeline (upstream) and 5 times the diameter of the pipeline (downstream), to avoid fluid disturbance affecting measurement accuracy.

2. Medium caliber pipelines (DN50~DN300): The installation spacing is generally 1m~5m, and most mainstream ultrasonic flow meters can ensure that the signal-to-noise ratio meets the standard in this range.

3. Large caliber pipelines (DN300 and above): The installation spacing can be relaxed to 3m~10m, and some special models for large diameters support larger spacing, but it is necessary to first refer to the official parameters provided by the manufacturer.

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2. Key Limitations 1 Fluid characteristics: For slurries or highly turbid fluids containing a large number of bubbles and solid particles, the installation spacing should be shortened to the lower limit of the general range to prevent measurement failure caused by excessive attenuation of ultrasonic signals

2. Pipeline material: The acoustic impedance of non-metallic pipelines (such as PVC, fiberglass) is significantly different from that of metal pipelines, and the allowable installation spacing of some models of sensors may be reduced by 10%~20% compared to metal pipelines

3. Measurement accuracy requirements: For high-precision measurement scenarios such as electricity and chemical industry, relevant requirements of GB/T 32209-2015 "Ultrasonic Flowmeters" should be followed, and some scenarios require additional matching of customized spacing parameters by customers.

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III. Precautions for On site Installation 1 Sensors should avoid fluid disturbance sources such as pipe bends, valves, pumps, etc., and should be installed in a uniform area of the straight pipe section first.

2. The sensor spacing of the clamp type ultrasonic flowmeter should match the diameter of the pipeline, and should not be adjusted beyond the range given by the manufacturer, otherwise it will cause measurement errors to exceed the standard.

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2. Ultrasonic flowmeter

3. TDS-100P portable ultrasonic flowmeter Chinese manual: [6]

The core content of the TDS-100P portable ultrasonic flowmeter Chinese manual is as follows:

1. Product Overview TDS-100P portable ultrasonic flowmeter is a high-precision, non-contact flow measurement instrument suitable for measuring the flow rate of liquids in closed pipelines. It adopts the principle of ultrasonic time difference method, which calculates the flow velocity by measuring the time difference between the forward and backward propagation of ultrasonic waves in the fluid, and then obtains the flow rate value. This product has the advantages of easy installation, accurate measurement, and good stability, and is widely used in fields such as petroleum, chemical, water conservancy, and environ

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