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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
Power supply | 230V AC 115V AC 24V DC/AC 12V DC/AC |
Frequency range | 20KHz ~ 170KHz |
Sensitivity | Adjustable in 4 increments |
Reaction time | 10ms |
Channel | Single |
Operating temperature | -40ºC ~ +80º |
Relative humidity | <90% |
Environmental compensation | Automatic drift compensation |
Output mode | electric relay |
Loop inductance | Ideal is 100μH to 300μH(Connection included) |
Size of Housing | 78x40x108 mm (L x W x H) |
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 .