The delta meter scale installation method and maintenance requirements

Abstract: the delta bar meter scale installation method and maintenance requirements information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: the delta the flowmeter is a kind of plug flow measurement instrument. In the pipeline to insert a delta sensor, when the fluid flows through the sensor, in the front of the incident flow direction to produce a high pressure area, a low pressure area in the back. 。 More flow meter manufacturers choose model price quote you are welcome to inquire, here is the delta the meter scale article details installation method and maintenance requirements. Delta the flowmeter is a kind of plug flow measurement instrument. In the pipeline to insert a delta sensor, when the fluid flows through the sensor, in the front of the incident flow direction to produce a high pressure area, a low pressure area in the back. This article mainly introduces the installation requirements of the flowmeter and the maintenance method, for everybody reference. Delta the flowmeter installation requirements: 1, for the sensor type I, has the detecting rod and a pipe welding as a body, when installation, must make the sensor in the direction of fluid flow. The inner diameter of the inside diameter of process piping and sensor, or at least in the straight pipe upstream of the required length within the scope of the axis of the sensor with the pipe axis Angle as far as possible to zero. Other types of sensor is the detection of rod inserted into the process piping, in addition to the total pressure hole when installation should is opposite flow direction, must ensure that the sensor detection pole perpendicular to the axis of the process piping, which allows the location of the pressure deviation Angle. Total pressure sensor hole center and the pipe axis Angle should be less than 7 & deg; Sensors pole along the direction of the pipe diameter inserted to the bottom, the angular deviation is less than 7 & deg; Vertical pipe sensor can be installed in any position along the pipeline circumferential 360 horizontal pipeline, high pressure pipe should be in the same plane, the figure 6 ( 一) As shown in. When measuring the liquid shall be installed lateral tilt down; When measuring gas steam should be upward sloping straight pipe installation 2, due to the sensor is based on velocity area method, the approximate integral theory, use more points to describe. Distribution equation, and is established under the condition of the full development of the velocity distribution. So, in order to get an ideal distribution, must be in before and after the sensor has A certain length of straight pipe number velocity-equalizing tube flow sensor installation location upstream side A downstream side B has no rectifier rectifier different plane on the same plane. 1, there is a 90 & deg; Elbow and tee 6 d7d9d3d; 2, in the same plane with two 90 & deg; 8 d9d14d3d elbow; 3, in different plane has two 90 & deg; Bend 9 d19d24d4d; 4, pipe diameter changes ( Or enlarge) 8 d8d8d3d; 5, partially open gate valves, ball valves, or other 8 d8d8d3d throttle valve. Note: ( 1) In the table & other; D” For the pipe diameter. （ 2) In the case of insufficient pipeline section, the upstream should be accounted for 70% of the total length of pipe, the downstream accounted for 30%, while still can give a steady value, but the accuracy of decline. Clamping sensor device shall ensure that no leakage, no looseness, no displacement. Delta the flowmeter maintenance: the delta of the flowmeter sensors should be regular cleaning, in the process piping overhaul cleaning method many, such as air blow test tube accumulated filth; Scrub with kerosene and soft silk net, make each hole to maintain patency. May produce the cause of the failure and remove methods: serial number of failure causes clear way. 1, differential pressure signal output: high and low pressure valve is not open, open the high and low pressure valve. 2, high and low pressure balance valves did not tighten, tighten balance valve 3, differential pressure signal output is too small, pressure system leakage phenomenon; Seriously looking for, eliminate the leakage. 4, secondary table range matching: improper uninteresting facts on the pressure transmitter limit is 5, and the differential signal output is too large, secondary table range matching is undeserved, augmenting the differential pressure transmitter ceiling, back-pressure aperture jams, cleaning velocity-equalizing tube, eliminate congestion. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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