Instrument Installation Precautions

Abstract: The information on the precautions for instrument installation is provided by the excellent flowmeter and flowmeter production and quotation manufacturers. 1. The opening of the instrument should avoid opening the hole on the forming pipe. 2. In the field instrument junction box, the grounding of different grounding systems cannot be mixed. The shielding wires of all instruments should be connected to the upper and lower shielding layers separately, and it is strictly forbidden to twist them together to connect the upper and lower shields. 3. Strict stainless steel tube. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the details of the article on the precautions for meter installation. 1. The opening of the instrument should avoid opening the hole on the forming pipe. 2. In the field instrument junction box, the grounding of different grounding systems cannot be mixed. The shielding wires of all instruments should be connected to the upper and lower shielding layers separately, and it is strictly forbidden to twist them together to connect the upper and lower shields. 3. It is strictly forbidden to cut and open stainless steel pipes by electricity and gas welding. Plasma or mechanical cutting and opening should be used. 4. When the instrument wires of different grounding systems or the instrument wires and the power wires share a slot frame, they should be separated by metal partitions. 5. Gas welding is strictly prohibited in the installation and processing of instrument panels, cabinets, boxes, and tables. Welding should not be used for installation and fixing, and mechanical opening should be used for opening. 6. A pipe cap to prevent valve leakage should be added to the lower port of the blowdown valve of the transmitter (especially in explosion-proof areas). 7. Pay attention to the length of the straight pipe section before and after the flowmeter. 8. If there are electromagnetic and mass flowmeters that require grounding, they should be grounded according to the instructions. 9. If the copper gaskets used in the instrument are not annealed, they should be annealed before use, and pay attention to the allowable temperature, medium and pressure conditions of the gaskets of various materials. 10. When the instrument is in a position that is not easy to observe and overhaul, report to Party A to agree to change the position or install a platform. 11. Joints are strictly prohibited in the middle of the instrument line. If there are special circumstances, report to Party A for approval, and make a concealed record. The compensation wire joints should be welded or crimped. 12. The stainless steel weld should be pickled, passivated and neutralized. 13. Galvanized and aluminum alloy cable trays are strictly prohibited from cutting and opening by electricity and gas welding, and similar mechanical cutting and openings such as toothless saws and special hole openers should be used. When the process pipeline is welded, the ground wire should avoid the instrument body to prevent the ground current from flowing through the instrument body and entering the ground and damaging the instrument. 14. During process welding, avoid the ground current flowing through the capillary pressure guiding tube of the single and double flange instruments. 15. Pay attention to the installation direction of the pressure taking port of the flow meter throttling device. 16. It is strictly forbidden to simmer the stainless steel impulse pipe; it is strictly forbidden to simmer the impulse pipe flat. 17. The installation position of the instrument pressure pipe, air pipe and threading pipe should avoid hindering the process production operation in the future, avoid high temperature corrosion places, and should be fixed firmly; the threading pipe leading down from the top should have a lower end than The connection inlet end of the connected instrument; the drip tee should be added to the lowest end of the threading pipe; the Y-shaped or conical explosion-proof sealing joint should be added to the side near the instrument; the condensate (sewage) valve should be added to the lowest part of the main air line of the instrument. 18. Instruments and pipe fittings that need to be degreased should be degreased in strict accordance with the specifications, and the sealing and storage of instruments and pipe fittings after degreasing should be done to prevent secondary pollution during storage and installation. 19. Stainless steel pipelines are strictly prohibited from direct contact with carbon steel. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Instrument Installation Precautions'

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