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4.2  Integral  orifice  plate  has  an  internally  polished  straight  pipe  section  with  20  times  the  pipe 

diameter  upstream  and  10  times  the  pipe  diameter  downstream,  which  achieves  a  good 

rectification effect and reduces uncertainty. 

4.3 High precision, after the actual flow calibration of integral orifice plate flow meter, the basic error 

of the flow coefficient can be up to ± 0.5%. 

4.4 The tapping body is machined from stainless steel forgings to ensure overall strength and to 

minimize possible leakage points. 

 

5 Outline Dimension Diagram-Figure 2 

The dimensions of D and L in the picture are subject to the actual product. 

 

 

 

 

 

 

图 2    Figure 2 

 

6 Unpacking and Inspection 

6.1 Precautions for Unpacking Inspection 

Check the quantity and material of each part against the packing list. 

6.2 heck Content 

Check whether the appearance of the instrument is defective or damaged. 

7 Installation 

7.1 Flow element is butt welded with the on-site pipeline to ensure the welding quality and 

suppress no leakage.

 

7.2 Installation Technical Requirements 

7.2.1 When installing the integral orifice flow meter, pay attention that the direction of the inlet and 
outlet is consistent with the direction of the "+" sign on the integral orifice plate. 

Summary of Contents for LGNC

Page 1: ...1 8 WWW DDTOP COM LGNC INTEGRAL ORIFICE FLOW METER Operation Manual LGNC DT JS 1029 2018 A...

Page 2: ...rior notice Quality Assurance Dandong Top Electronics Instrument Group Co Ltd guarantees that all products will be free from defects in materials and manufacturing processes within one year from the d...

Page 3: ...m and 10 times the pipe diameter downstream which achieves a good rectification effect and reduces uncertainty 6 4 3 High precision after the actual flow calibration of integral orifice plate flow met...

Page 4: ...or non flammable site operating procedures 1 2 Process leaks can cause serious injury or death If the process seal is damaged the medium may leak at the connection 1 3 Failure to follow the safety in...

Page 5: ...d before and after the flow element through the differential pressure transmitter can output and the measured fluid flow value as a square relationship between the standard signal can be converted int...

Page 6: ...ge points 5 Outline Dimension Diagram Figure 2 The dimensions of D and L in the picture are subject to the actual product 2 Figure 2 6 Unpacking and Inspection 6 1 Precautions for Unpacking Inspection...

Page 7: ...anges slowly 8 5 Before the fluid flows through the flow element its stream must be parallel to the axis of the pipeline and there must be no rotating flow 8 6 The standard flow element is not suitabl...

Page 8: ...ned on Turn on power supply 2 Stop valve is not opened Open the stop valve 3 Differential pressure transmitter failure Check differential pressure transmitter Medium leakage at the flow element 1 Insu...

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