Curtain detector knowledge

First, what is a curtain detector curtain detector is generally used infrared two-way pulse counting work, that is, A direction to B direction alarm, B direction to A direction does not alarm, because the curtain detector alarm method has direction Sex is also called the aspect curtain detector. The curtain detector has the ability to identify the intrusion direction. When the user enters the guard area from the inside to the outside, it will not trigger an alarm. Returning within a certain period of time will not trigger an alarm. Only an illegal intruder will trigger an alarm when intruding from the outside, which is extremely convenient. The user is active in the armed area of ​​the fortification without triggering the alarm system.

Second, the use of curtain detectors Curtain detectors are particularly suitable to prevent the entire wall of windows, large balconies, aisles and so on.

1. The detector is fixed horizontally on the wall, with the directional window pointing to the outside, the installation height is about 1.8-2.3 meters, the distance between the detector and the window is more than 1 meter, and the sensing window is as far as 15 meters. The infrared curtain with an upper and lower angle of 110 degrees has an average curtain thickness of 1 meter.

2. It should be installed in the indoor air or in a location or space where the temperature does not change so much so as to avoid rapid changes in the temperature of the windows, the air-conditioner and the stove.

3, the installation should be as far away from high-power appliances, away from the outside light heat source, such as sunlight, strong lighting and lighting.

4, curtain detectors are generally installed indoors.

5. The detector should be installed so that it covers the entire area to be detected.

Third, installation precautions The curtain detector installation should pay attention to the following points:

1. Do not directly face the window when installing the curtain detector.

2. No screens, furniture, large bonsai or other partitions within the scope of detection.

3. Two infrared detectors shall not be installed in the same space to avoid interference caused by simultaneous triggering.

4, to avoid facing the windows, cold heaters, stoves and other temperatures will produce rapid changes in order to avoid false positives.

5. When the infrared detector has just been turned on, it has about 5 minutes of perception time for the surrounding environment. After the infrared detector is turned on for 5 minutes, the controller is used for fortification.

6. When the intruder is detected by the curtain detector, it takes a few seconds for the analysis to confirm the time before it can emit an alarm signal to avoid false alarms and missed reports.

7. The curtain detector can only be installed indoors (do not install it outdoors).

8. Infrared detector board has "-123" port, "23" port is in test state when connected, and "12" port is in normal use state when connected. In the normal use state, a reset time of 5 minutes is required after the first alarm (infrared trigger is not accepted during this time), and the second working state is entered after 5 minutes. In normal use, the port should be in the “12” connection state. (The port is set to the "23" connection state at the factory)

Geosynthetic Clay Liner( GCL)is made from 100% natural sodium bentonite, Woven Geotextile, nonwoven Geotextile.Geosynthetic clay liners (GCLs) are high performance needle punched environmental reinforced composites which combine two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier. Fibers from the non-woven geotextile are needle punched through the layer of bentonite and incorporated into the other geotextile (either a woven or non-woven).when hydrated under a confining load, the bentonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay.

ASTM waterproof blanket


Property
1. Swell when meet water
2. Long time waterproofing and friendly to environment
3. Separation, reinforcement, protection, filtration and easy for construction
 
Application 
1. Municipal project, subway, underground and roof waterproofing
2. landfill, waste water treatment, industial waste
3. Waterproofing and reinforcement in water conservancy, river, lake and dam
4. Artificial lake, golf course and fish pond 
5. Petrifaction and mineral waterproofing
Astm Gcl Application

Specification

Unit weight: 4500g/m2, 4800g/m2, 5000g/m2, 5500g/m2, 6000g/m2 or customerized
Width: 5m-6m or customerized
Length: 10m, 20m, 30m, 40m, or customerized


Technical data

ASTM GCL


CE ISO of GCL

Geosynthetic Clay Liner With Geomembrane

Geosynthetic Clay Liner With Geomembrane,Natural Bentonite Geosynthetic Clay Liner,Geosynthetic Geomembrane Clay Liners,Geomembrane Geosynthetic Clay Liner

Shandong Tianhai New Materials Engineering Co., Ltd , https://www.chinatinhy.com