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『4 flow meter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. How to read the legend of the flow meter in the CAD drawing of the water supply pipeline?
The identification of the flow meter legend in the CAD drawing of the water supply pipeline can be achieved through layered disassembly: understanding the flow meter symbols in the CAD drawing is like interpreting a set of engineering passwords, which needs to be unfolded layer by layer according to logic. Generally speaking, mastering the four key points quickly can clarify the core information of the flowmeter. 1. Find the legend index accurately: The legend description page in the drawing is the information hub. After locating the page through the catalog or drawing title page, search for symbols such as "FM" (Flow Meter abbreviation), "Flow Meter", etc. in the instrument or equipment classification column. Typical symbols such as circular embedded one-way arrows (corresponding to mechanical flow meters) or rectangular boxes+wavy lines (electronic flow meters)
2. Analyzing graphic features: symbol details determine technical parameters. For example, the triangular markings around the circular difference spike symbol can represent the installation angle requirements; The solid/dashed line connecting the pipeline reflects the flange connection or threaded connection method; If there are intersecting cross lines inside the symbol, it often indicates that it needs to be used in conjunction with the temperature/pressure compensation module.
3. Read the annotation level: The annotation next to the symbol contains key data links. Taking "DN50 FM-2000E" as an example: DN50 refers to a nominal diameter of 50mm; the front part of FM-2000E is the model code, and the suffix E may represent the explosion-proof level.
4. System correlation positioning: Flow meters that appear at the intersection of the main and branch water supply pipes are usually responsible for monitoring the total flow rate; The flow meter at the outlet of the water pump often forms a monitoring combination with the pressure gauge; If the symbol is located at the front and back of the water treatment equipment, its measurement results may be linked to the control of the chemical dosing system. When encountering special symbols, GB/T 50106-2010 "Standard for Water Supply and Drainage Drawing" or corresponding enterprise drawing specifications of design institutes can be searched. Such documents often have clear definitions of details such as oblique line filling density and scaling rules.
2. How to use the domestically produced SY-1020A photosynthetic apparatus from Shiya Company
Currently, there is no detailed operating instruction for the specific model of the SY-1020A photosynthetic apparatus from Shiya Rentong in public information, but the general photosynthetic apparatus usage process can be used as an important reference. Before actual operation, it is necessary to follow the official manual or manufacturers guidance.
. 1. Prepare a stable reference gas source and install the instrument correctly. Connect the intake pipe buffer bottle, which is the basis for ensuring accurate measurement. 2. Turn on the power switch on the right side of the host during startup and initial settings. When the screen prompts "Is the IRGA connected? (Y/N)" after the instrument is started, select Y. Then, configure and select according to the actual type of blade cha