Loop detector The VD108B is single channel inductive loop detectors,has one TTL-level output, which is ulimited.

Loop detector

Introduction
The VD108B is  single channel inductive loop detectors. Loop detectors are used wherever vehicles have to be detected. The output signal can be used for controlling door and gate drive mechanisms, operating barriers, controlling traffic light systems in car parks or activating card dispensers in car parks. VD108B output is TTL mode.

Technical Data

Supply voltage AC: 220V, 110V, 24V, 12V
Operating voltage: 7-12VDC@20mA
Frequency rang: 29 KHzs-90 KHz
Sensitivity: 0.02%-0.2% sensitivity (4 Level can be adjusted)
Respond time: 100 ms
The environment is in expiation of: The automatic moves to compensate
Loop inductance: 50H - 500H (include conjunction line) Ideal : 150H (41KHZ)
Loop conjunction. Wiring max 20m, twisted at least 20 times per meter
Storage temperature: -40 +85
Operating temperature: -20 +55
Relative humidity: 95%
Dimensions: 27mm *21mm * 37mm
Encapsulation: stranded reply encapsulation )