20kHz - 170kHz Single Channel AC DC Vehicle Loop Detector

High Temperature Stability Single Channel AC DC Voltage Vehicle Loop Detector

About loop detectors

Loop detectors are used wherever vehicles have to be detected, for example: monitoring and safe guarding access ways or counting vehicles. 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.

Technicial specifications

1) Supply voltage: AC220V
2) Loop Quantity:2
3) Sensitivity: adjustable in 4 increments (high .medium. low)
4) Operating temperature: -20°C to +70°C
5) Storage temperature: -40°C to +85°C
6) Frequency range: 20 kHz to 170 kHz
7) Reaction time: 10ms
8) Loop inductance: Ideal:80μH to 300μH Max:50μH to 500μH
9) Loop connection: <5m optimal
10) Loop connection wiring: Maximum length 200 meters
11) Twisted at least 20 times per meter
12) Dimensions: 78*40*108 mm (L*W*H)
13) Net Weight: 350g

Technical parameters of Loop Detector

Application Scope

- Parking lot entrance vehicle detection;
- Pakring lot space information acquisition system
- Electronic police traffic lights snap shot system
- Traffic monitoring system

FUNCTION AND FEATURES

1) Reset Switch : The reset switch enables the detector to be manually reset during commissioning and testing . This results in the detector re-tuning the sensing loop and becoming ready for vehicle detection ;

2) Selectable Pulse Time : This feature sets the length of time that the pulse relay will be energized for 1 Second or 0.5 Seconds ;

3) Pulse Relay Selection : The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop ;

4) Sensitivity Boost : This feature sets the undetect level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles ;

5) Switch Selectable Sensibility : 4 sensitivity setting are available on the switches to allow flexibility in configuration ;

6) Switch Selectable Frequency : 4 frequency settings are available to prevent cross-talk between adjacent loops ;

7) Filter Option : This option is used to provide a delay between detection of the vehicle and switchiing of the output relay . This relay is normally used to prevent false detection of small or fast moving objects ;

8) Permanent Presence Option : This feature ensure detection of the vehicle will be maintained when the vehicle is parked over the loop for extended periods .