Up to 3 layers of clouds
Measurement error of hard objects
The sampling period
30 seconds to 300 seconds can be set continuously
When not heating ≤100W; When heating ≤700W
Maximum wired transmission distance: not less than 300m
Ambient temperature: -55℃～60℃；
Relative humidity: 95%RH (35℃)
Reliability and maintainability
|Mean time between failures: MTBF≥500h|
Average repair time: MTTR≤0.5h
An installation plan should be made before starting the installation of the ceilometer so that the installation can go smoothly.
1) Wiring planning: Determine the wiring planning and cable type of power lines, grounding lines and communication lines;
2) Foundation: prepare the foundation for installation;
3) Connecting cables: Connect the power line, communication line and grounding line of the site to the power port, communication port and grounding port of the equipment respectively, and connect the communication line to the serial port of the background computer.
Positioning and Orientation
Install the ceilometer on the working foundation, place it horizontally when measuring hard objects, and place it vertically when measuring cloud layers. When fixing the foundation, make sure that the sun cannot directly shine on the lens of the ceilometer, so as not to burn the equipment parts. For this reason, the placement position of the ceilometer should be consistent with: the northern hemisphere window is placed north, and the southern hemisphere window is placed south (this placement is only valid for north or south latitudes above 30°). Figure 3 shows the orientation of the ceilometer in the northern hemisphere. Adjust the placement direction in time with seasonal changes to avoid direct sunlight.
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