Traffic Inductive Ground Loop Detector Low Frequency , Inductive Loop System
| Place of Origin: | Zhejiang |
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Company Profile
| Location: | Shenzhen, Guangdong, China (Mainland) |
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| Business Type: | Manufacturer |
| Main Products: | Traffic Loop Detector, Single Channel Loop Detector, Magnetic Loop Detector |
Product Detail
| Model No.: | NBLD-200 |
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Product Description
Traffic Inductive Ground Loop Detector Low Frequency , Inductive Loop System
Description:
Loop detectors in recent years have become a popular tool having innumerable applications in policing, right from surveillance operations to traffic control. Automation of gates and doors has become a popular usage of the loop detector.
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 : 11 levers adjustable 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 .
Specifications:
| Self-turning range | 20-2000μH |
| Response Times | 10-90MS |
| Sensitivity | 16 way selectable levels |
| Visual Indications | Power LED-Red, Channel LED-Green |
| Frequency | Four step switch, selectable 20-80KHz |
| Relay Output | Presence Relay/Fault Relay |
| Power Requirements | 110-240VAC (48 to 62Hz) |
| Fault Output | Blinks slowly, Blinks faster |
| Reset |
Reset by push button on front of enclosure |
| Product size | 92*76*42mm |
| Label Language | English |
| Connections | 11-pin Submagnal |
| Storage Temperature | -40 to 80 Celsius degree |
| Normal Working Temperature | -40 to 70 Celsius degree |
Applications:
- To arm card readers and ticket dispensers.
- As a barrier/gate/door closing detector.
- As a barrier/gate/door opening detector (Free exit).
- To generate pulses for counting vehicles.
- vehicles in parking and vehicle access control applications.
Loop Installation:
The loops are sealed using a “quick-set” black epoxy compound or hot bitumen mastic to blend with the
roadway surface.
| Loop perimeter | Cylinder numbers |
| 3 ~ 4 M | 6 |
| 4 ~ 6 M | 5 |
| 6 ~ 10 M | 4 |
| 10 ~ 20 M | 3 |
| 20 M~ UP | 2 |
Competitive Advantage:
Self-turning range: 20-2000μH
Response Times: Turn-on 10-90MS
Turn-off 10-90MS
Sensitivity: 16 way selectable
Highest 0.010% DL/L
Lowest 2.56% DL/L
Troubleshooting:
| Symptoms | Solution | |
| If the detector is not working? | Press reset | |
| If red led indicator is not fully lit? | Check for power supply | |
| If green led indicator ? | Blinks slowly? | It maybe because the loop is short circuit or the no: of turns is not enough |
| Blinks faster? | It maybe because the loop is open or the no: of turns is too many. | |
| If no: of turns is not enough? | Lower the frequency (if the frequency is still too high, you must add more turns). | |
| If no: of turns is too many? | Higher the frequency (if the frequency is still too low, you must remove some turns). | |
Inductive loop detector picture:
