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1. What is the range of a flow meter? The range of a flow meter is the flow range that ensures the accuracy and safe operation of the instrument, and is defined by the lower and upper limits. 1. Conceptual connotation: The range of a flowmeter refers to the flow range that the instrument can accurately measure, usually labeled as "lower limit upper limit value". For example, when a gas flowmeter is labeled with 0.1m ³/h-10m ³/h, flow rates below or above the lower or upper limit may result in errors or be unable to measure.
2. Important significance: Ensuring accuracy: The measurement range is limited to controllable errors during measurement, and exceeding the limit may lead to deviation or even failure of the results.
. Ensuring equipment safety: Adapting the range can avoid instrument overload operation and reduce the risk of damage. 3. Differences in measurement principles affecting factors: for example, the range ratio of differential pressure flow meters is about 3:1, while electromagnetic flow meters can reach 10:1 or more. Application scenario requirements: Industrial large pipe diameter measurement requires a large range, while laboratory small flow rates pursue small range and high precision.2. What are the types of velocity flow meters? Explain their basic principles separately.
[Answer]: There are three types of velocity flow meters: electromagnetic flow meters, turbine flow meters, and ultrasonic flow meters. (1) Electromagnetic flowmeter is an instrument made according to Faradays law of electromagnetic induction to measure the volumetric flow rate of conductive liquids. The volumetric flow rate of the fluid flowing through the pipeline is proportional to the induced electromot
3. What is the price of an electronic flowmeter?
4. What are the tips for selecting flow meters? The selection of flow meters plays a crucial role in the effective utilization of instruments. Due to the complexity of the measured object, as well as the variety and performance indicators of the instruments, the selection of instruments is complicated. There is no perfect flowmeter, and each instrument has its own characteristics and scope of application. The purpose of selection is mainly to highlight the strengths and avoid weaknesses among numerous varieties, and to choose the most suitable flow instrument for ones application, including humidity sensor probe, stainless steel electric heating tube, PT100 sensor, fluid solenoid valve, cast aluminum heater, and heating coil. （1） The general selection of flow meters can be considered from five aspects: instrument performance, fluid characteristics, installation conditions, environmental conditions, and economic factors. Here is a detailed introduction:
1. In terms of instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc;
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