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1 Safety Tips 

For safety reasons, it is expressly prohibited to modify or change the product without authorization. 

Repair or replacement is only allowed to use the accessories specified by the manufacturer. 

1.1 An explosion may cause death or serious injury. 

When  installing  the device  in  an  explosive  environment,  be  sure  to  comply  with  applicable  local, 

national, and international standards, codes, and regulations. Ensure that the equipment is installed 

in accordance with intrinsically safe 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 installation guidelines may result in death or serious injury. 

The operations described in this manual need to be completed by professionals who have received 

professional training and obtained corresponding qualifications or special end-users. 

 

2 Product Description 

2.1

 Product Structure-Figure 1 

 
 
 
 
 
 
 
 
 
 
 
 

1. Connecting Flange 2. Front Straight Pipe Section 3. Tapping Body 4. Seal Gasket 5. Integral Orifice 
Plate  6.  Rear  Straight  Pipe  Section  7.  Small  Seal  Gasket  8.  Manifold  9.  Differential  Pressure 
Transmitter 

图 1    Figure 1

 

 
 

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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