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1. Is there any relationship between the measurement of steam flow meter and steam pressure and temperature?
1. The measurement method of steam flow meter is closely related to the pressure and temperature of steam. For water, due to its relatively stable density, it can be directly measured. However, for steam, its density changes with pressure and temperature, so compensation is needed. There are two main compensation methods for steam flow meters. The first type of Kaicong search is temperature compensation. The flow meter first accumulates the volume of steam, and then loads the pre stored density value at the corresponding temperature into the accumulator through a control unit (such as RCU), thereby calculating the weight flow rate of steam. The second compensation method is pressure compensation. This is because the pressure of saturated steam is directly proportional to its temperature. In the pressure compensation method, accurate steam flow can be obtained by measuring and compensating for the pressure of steam. For superheated steam, temperature compensation is required. Unlike saturated steam, the temperature and pressure of superheated steam are not proportional. Therefore, in the flow measurement of superheated steam, temperature must be used as a compensating parameter.
5. In the flow measurement of superheated steam, volumetric flow is first measured like saturated steam. Then, the density value of the superheated steam is inputted into the memory in advance through the control unit (such as ECU), and multiplied by the volumetric flow rate to obtain the true weight flow rate value.
2. What is a biogas flowmeter and what gases can be measured by a biogas flowmeter?
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2、 The biogas flowmeter can mainly measure some flammable gases. The working principle of biogas flowmeter is that when the medium flows in the measuring tube, it generates a pressure difference with the target plate due to its own kinetic energy, resulting in a force on the target plate, causing a slight displacement of the target plate. The magnitude of the force is proportional to the square of the medium flow velocity, and its mathematical formula is: F=Cd · A ·ρ· V2/2F: the force acting on the target plate Cd: the fluid resistance coefficient A: the axial projection area of the target plate on the measuring tube ρ: the density of the medium under working conditions V: the characteristic flow velocity of the medium in the measuring tube. Precautions for biogas flowmeter: It is not allowed to directly install valves, bend width and tolerance heads at the front and rear ends of the measuring tube of the biogas flowmeter that greatly change the fluid flow state. If it is necessary to install valves, elbows, and other components on the front and rear pipelines of the biogas flowmeter, the length of the straight pipe sections should also be ensured as much as possible.
3. Is there a relationship between steam flow meter measurement and steam pressure and temperature?
There is a relationship between steam flow meter measurement and steam pressure and temperature.
. Steam flow meters are different from water, as the density of wa