1. It belongs to line-controlled detectors and its control range is a narrow space that is promulgated in a linear manner. At the same time, infrared light is a kind of non-visible light. Therefore, the active infrared alarm has better concealment.
2, the active infrared radiation monitoring distance is far away, and the sensitivity is higher.
3. When the active infrared radiation is used for indoor guarding, the work reliability is high. When used outdoors, it is affected by the environmental climate. In case of bad weather such as fog, snow, rain, windy sand, etc., visibility is reduced, and the effect distance is shortened. At the same time, due to the complex outdoor environment, sometimes encountering wild animals, or falling leaves may also cause false alarms.
4. Since the lens surface of the optical system is bare in the air, it is easily contaminated by dust and other debris. Therefore, it must be cleaned frequently to keep the mirror clean. Otherwise, the actual monitoring distance will be shortened, which will affect the reliability of its work.
5. The cordon or alert net formed by the active infrared radio can be freely configured due to different environments, and is flexible and convenient to use.
Lecor Active Infrared Shooting Installation Notes:
1. Avoid facing strong sunlight, car headlights, etc. Avoid reflections from the transmitter or receiver.
2. Do not install on unstable surfaces.
3. Take into account seasonal changes and do not install in places where light beams may be blocked by leaves or plants.
4. Do not install it in a place that may be bombarded with dirty water or be splashed directly by the waves.
Basically there are two types of Diameter Tape Measure, one is Pipe OD Tape Measure Diameter Circumference, another is ID (Inner Diameter) PP Tape Measure
Pipe OD Tape Measure Diameter Circumference
Product Description:
The 2-meter Pipe OD Tape Measure Diameter Circumference is made of reliable material to satisfy precise diameter measuring requirement.The reading for the perimeter, accurate to 1 mm. The tape is double sided with circumference (measures in cm & inch) and diameter (measures in inch & inch) on the either part. Pipe od tape measure adopts fiberglass tape to deliver water and stain proof effect and to ensure that it is of good elasticity for diameter measuring. The retracting mechanism is built in the durable ABS case, thus service life is extended. Wintape provides the diameter tape measure with other patterns and offers customized logo for you.
ID (Inner Diameter) PP Tape Measure
Product Description:
Inner diameter tape measure is made of PP material that is of excellent stress tensile strength and high elasticity. The scale numbers are already been calculated so the tape gives you the result directly without calculating. The practical ID measuring tape can be adopted in various ways such as pipe and container measuring. The double sided inner diameter measuring tape makes number reading easier and more convenient.
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Wintape Measuring Tape Company , https://www.wintapetape.com