1. What is throttling device?Answer: throttling device is a flow limiting device installed in the circulation pipeline.It comprises a throttle, a pressure taking device and a front and rear straight pipe section.2. Why is it called throttling device?Answer: As the name implies, throttling means to control the inflow or outflow.In the flow pipeline with throttling device, the flow bundle will form a local contraction at the throttle, so that the flow rate increases and the static pressure is reduced, so the static pressure difference is produced before and after the throttle, and the throttle type (or differential pressure) flowmeter is made by using this principle.3. What accessories are generally required to be configured for use, and what are the special ones?Answer: in normal measurement, because the throttle device is only a "primary device (or flow sensor)", it must be used together with the differential pressure gauge or differential pressure transmitter (also known as the "secondary device") can measure the flow of the fluid in the pipeline.Special types of measurement: such as high temperature steam, gas, corrosive media, etc., condensing tank or isolation tank and other devices must be installed to avoid damage caused by direct contact of medium differential pressure transmitter.Because the temperature and pressure of steam and gas have a great influence on the flow rate, the temperature and pressure compensation accessories are generally required.If the liquid temperature changes greatly, it also needs to be equipped with temperature compensation accessories.

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