The electric rolling shutter is integrated with a multi-joint movable door system. It is powered by a motor unit that drives the starting motor. In the fixed sliding mechanism, both the upper and lower doors rotate around a reel located above the door. The electric shutter motor is hidden inside a coiled tube, and as the motor rotates, it drives the drive shaft, which in turn controls the lifting and lowering of the roller blind. When the curtain is raised, it is wound onto the reel, and when lowered, it slides down along the inner side of the guide rail. The operation is controlled via a remote controller, allowing for smooth movement, stopping, and adjusting the height of the curtain. A manual release system is also available in case of power failure, enabling users to operate the shutter manually using a hand crank. This type of door is widely used in commercial buildings, garages, shopping malls, hospitals, factories, and mines, as well as residential areas. It is particularly suitable for locations with large openings where traditional ground-level doors are inconvenient or impractical, such as garage doors, shopping mall entrances, fire shutters, and hangar doors. Electric roller shutters come in various types based on different criteria: 1. **Material-based classification**: These include European-style roll doors, inorganic fabric roll doors, mesh-type roll doors, aluminum alloy roll doors, and crystal roll doors. Each material offers unique benefits in terms of durability, aesthetics, and functionality. 2. **Motor type classification**: There are specialized motors designed for specific applications, such as fire-resistant roll doors, Australian-style roll doors, external roll doors, tubular roll doors, double-curtain roll doors, and fast-roll doors. The choice of motor depends on the user’s needs and environment. 3. **Function-based classification**: Some models are designed for noise reduction, while others are built for strength, wind resistance, or fire safety. Others feature stainless steel or transparent materials, offering both security and visibility. When it comes to long-distance operation failures, several factors may contribute: - **Power transmission**: High power over long distances can lead to increased energy consumption and signal interference. - **Receiver sensitivity**: While increasing sensitivity can extend the remote control range, it may also result in signal instability or accidental activation. - **Antenna setup**: Using linear antennas aligned parallel to each other can improve signal distance, but they require more space. Extending and straightening the antenna can also help enhance performance. - **Antenna height**: Higher antenna placement typically improves signal range, although this is often limited by physical constraints. - **Obstruction issues**: Most wireless remotes use UHF frequencies, which behave similarly to light—propagating in straight lines with limited diffraction. If there are walls or other obstacles between the transmitter and receiver, signal strength can be significantly reduced. Concrete walls, in particular, absorb electromagnetic waves, further limiting the effective range. For more information, visit Xinke Door Industry (Tianjin) Co., Ltd.: http://...
Sealand is a trustworthy manufacturer of Coriolis mass flow meter, Coriolis mass flowmeter, Coriolis meter, Coriolis flow meter and Coriolis flowmeter, ATEX, CE & IECEx approved.
The flow meter size covers from DN03 to DN150, and bigger models are being developed. The main specification is as follows.
Model No.
Diameter
(mm)
Max. flow rate
(kg/min)
MWP.
(MPa)
Accuracy grade
(%)
Zero stability
(kg/h)
CG-03
03
6
4
0.1/ 0.2/ 0.5
0.012
CG-06
06
18
4
0.1/ 0.2/ 0.5
0.04
CG-15
15
50
25
0.1/ 0.2/ 0.5
0.12
CNG-20
20
120
25
0.1/ 0.2/ 0.5
0.36
CG-25
25
200
4
0.1/ 0.2/ 0.5
0.62
CG-40
40
500
4
0.1/ 0.2/ 0.5
1.60
CG-50
50
1000
4
0.1/ 0.2/ 0.5
2.38
CG-80
80
3000
4
0.1/ 0.2/ 0.5
7.05
CG-100
100
3600
4
0.1/ 0.2/ 0.5
12.00
CG-150
150
8000
4
0.1/ 0.2/ 0.5
50.00
Coriolis Mass Flow Meter, Coriolis Mass Flowmeter, Coriolis Meter, Coriolis Flow Meter, Coriolis Flowmeter
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com