ã€China Aluminum Industry Network】 Aluminum alloy doors and windows made of aluminum alloy extrusions for frames, crucibles and fans are called aluminum alloy doors and windows, or aluminum doors and windows for short. Including the use of aluminum alloy as a rod (to withstand and transfer the weight of the rod) substrate and wood, plastic composite doors and windows, referred to as aluminum-wood composite doors and windows, aluminum-plastic composite doors and windows.
The quality of aluminum alloy doors and windows can be roughly judged from the selection of raw materials (aluminum profiles), aluminum surface treatment and internal processing quality, and the price of aluminum alloy doors and windows.
A look at the materials. High-quality aluminum alloy doors and windows used in aluminum, thickness, strength and oxide film, etc., shall comply with the relevant national standards, wall thickness should be more than 1.2 mm, tensile strength of 157 newtons per square meter mm, yield strength to achieve each Square millimeters 108 Newtons, oxide film thickness should reach 10 microns. If it fails to meet the above criteria, inferior aluminum alloy doors and windows cannot be used.
Second, see processing. High-quality aluminum alloy doors and windows, fine processing, installation stress, good sealing performance, switch freely. Inferior quality aluminum alloy doors and windows, blind selection of aluminum profiles and specifications, rough processing, and saw cutting instead of milling, not installed as required, poor sealing performance, switches are not comfortable, not only leakage of air leakage and glass burst phenomenon, but also To strong winds and external forces, it is easy to scrape or fall off the push-pull part or glass, destroying things and hurting people.
Three to see the price. Under normal circumstances, high-quality aluminum alloy doors and windows due to high production costs, the price is about 30% higher than inferior aluminum alloy doors and windows. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have much lower tensile strength and yield strength than the relevant national standards and are not safe to use. In addition, there are many self-employed aluminum alloy doors and windows, and they do not understand the structural characteristics and performance of aluminum alloy doors and windows. In order to reduce the cost of cutting corners, shoddy products, the hidden dangers of the product is generally not suitable. It is better to use the products of regular aluminum alloy door and window manufacturers. Here is a special point to point out: Now the national standard profile thickness is 1.4mm, if the supplier chooses a 1.2mm or 1.0mm wall thickness or even thinner material, it belongs to non-compliance products, please buy Careful attention.
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Operating Environment
Atmospheric pressure: 85kPa~106kPa
Ambient temp.: Refer to Chapter 1.6
Relative humidity: 5%~95%, non condensing
Operating conditions
Fluid: Liquid/Gas
Fluid temperature: -200°C~+200°C (higher temp. model is customizable)
Nominal pressure: 4MPa or 25MPa (Customizable)
Supply voltage: AC 85~265VAC, 50/60Hz or DC 12~24VDC(±5%), 5W
Outputs: Pulse 0~10KHz, RS-485, 4-20mA & HART (optional)
The meter consists of mass flow sensor and transmitter. Mass flow sensor is a phase-sensitive resonant sensor based on Coriolis effect, composed of vibration tube, signal detector, concussion driver, structural support, shell, etc.
Mass flow transmitter is a micro-programming-centered electronic system, which supplies
thrust to sensor, transforms sensor signal into mass flow signal & others, and improves
accuracy in accordance with temperature parameter.
It`s composed of switching power supplier, guard grating, core processor board, display
module, etc., installed in a ex-proof junction box. Switching power supply offers power for
transmitter; safe grating isolates sensor and transmitter intrinsically; core processor detects
& processes sensor phase signal, sends mass flow signal and process communication.
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