The dome camera has the subjective advantages of convenient installation, beautiful appearance and good concealment, in addition to the indicators on the function of ordinary gun cameras. Although the installation and maintenance of the dome camera is simple, in order to display the perfect performance of the camera, achieve the ideal camera effect, and meet the needs of users, it also needs to grasp some key and important requirements and standards in the process of construction wiring, installation and debugging. The relevant notes are briefly described below.
1. When designing the construction and cabling, we must lay cables of appropriate size according to the distance from the front-end camera to the monitoring center; if the line is too long and the cable used is too thin, the signal attenuation of the line is too large to meet the requirements of image transmission. As a result, the quality of the image viewed by the monitoring center is very poor. If the camera uses a DC12V centralized power supply, the transmission loss of the voltage should also be taken into consideration so as to prevent the camera from being unable to operate normally due to insufficient power supply from the front camera. In addition, when laying power cables and video cables, they must be routed separately and at a distance of more than 1 meter to prevent transmission of power interference signals.
2. The dome cameras are installed by indoor ceilings (special circumstances require special treatment when installed outdoors). During the installation process, attention should be paid to the materials and load-bearing conditions of the ceiling to avoid strong electric fields and strong magnetic fields. Environmental installation. Aluminum alloy and gypsum board ceilings should be installed at the top of the ceiling with thin wood board or cardboard to fix the camera floor screws, so that the camera can be fixed firmly and will not easily fall off, otherwise, replace the camera in the future maintenance process It will damage the ceiling of the plaster material, and it will not be firmly fixed, which will cause damage and cause annoyance to customers. If it is installed above the corridor outside the building, you should also pay attention to whether there is water leakage in the ceiling, and whether rain will shower during the rainy season. To camera and other factors.
The company's main products: infrared waterproof machine , zoom machine, surveillance camera , security monitoring equipment
IECEx Approved Coriolis Mass Flow Meter
Zhejiang Sealand Technology Co., Ltd. is a trustworthy manufacturer of Mass Flow Transmitter, Coriolis Mass Flow Transmitter, Coriolis Mass Flow Sensor, Mass Flow Sensor & Mass Flow Sensor Coriolis, ATEX, IECEx & CE approved.
The meter can be connected with computer as follows. Connect the meter and computer with a USB-to-RS485 converter( converter A+ end to transmitter A+ end, B- to B-, and GND to GDN); turn to device manager of the computer to check COM port connected with meter. Start the software, select the right COM port and click Connect; do not change any other parameters (if you do not know the right one, click Automatic options on the left, click Connect, plug & unplug the transmitter, and then check if it is connected). You can click Connect on the tool bar to disconnect or connect again. It will shown Connected/Not Connected at the bottom of this interface.
The flow direction is settable. There are 4 options, forward(default), reverse, absolute value & bi-direction. There is a direction mark on the sensor. Forward means the same direction with the mark on sensor, the meter will only count the flow in this direction; reverse means the opposite direction of the mark, the meter will only count the reverse direction; bidirectional means that the meter will measure both directions, it increases when it is forward and decreases when reverse; absolute means it increases no matter it is forward or reverse.
Mass Flow Transmitter, Coriolis Mass Flow Transmitter, Coriolis Mass Flow Sensor, Mass Flow Sensor, Mass Flow Sensor Coriolis
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com