Ex: L=1.78 meters; Sensor’s length is 1.82 meters; Overall length is 1.94 meters | Sensor Length | Visible Brass Length | Overall Length(including ends) |
| 6'(1.82m) | 70''(1.78m) | 76''(1.93m) |
| 8'(2.42m) | 94''(2.38m) | 100''(2.54m) |
| 9'(2.73m) | 106''(2.69m) | 112''(2.85m) |
| 10'(3.03m) | 118''(3.00m) | 124''(3.15m) |
| 11'(3.33m) | 130''(3.30m) | 136''(3.45m) |
| Model No. | QSY8311 |
| Section size | ～3×7mm2 |
| Length | can be customized |
| Piezoelectric coefficient | ≥20pC/N Nominal value |
| Insulation resistance | ＞500MΩ |
| Equivalent capacitance | ～6.5nF |
| Working temperature | -25℃～60℃ |
| Interface | Q9 |
| Mounting bracket | Attach the mounting bracket with the sensor (Nylon material not recycled). 1 pcs bracket each 15 cm |
| Steps | Picture |
| 1） Construction warning signs should be placed in front of the construction site.2）Draw line: use tape, slate pencil and ink fountain to draw and mark the position where the sensor is placed, also ensure that the cables are long enough to connect to roadside cabinet.3） Cutting slot: use a cutter to open a square groove on the road along the marking line. The cross-sectional dimension of the groove should be accurately controlled within the specified range (see diagram at right side). According to the length of the sensor, deepen the depth of the groove ends to 50mm (to adapt to the sensor output head and end). 4）Road breaking: use a hammer to groove and trim the bottom of the groove. The bottom of the groove should be trimmed as smoothly as possible. According to the drawing: the right picture and the relevant basic construction drawings. Main equipment: pavement cutting machine, impact hammer, hoe, drill. Note: Control the crushing depth of the mounting groove. If it is too shallow, the sensor and the bracket cannot be seated. If it is too deep, the amount of grout will be large. grout will be large. | 1) Cross Section dimension A=20mm(±3mm)mm； B=30(±3mm)mm 2) Groove’s length The length of the slot should be more than 100 to 200 mm of the total length of the sensor. Total length of sensor: i=L+165mm, L is for brass length (See the label). |
5.3Pre-installation test 1, Test capacitance: Use a digital multi-meter to measure the total capacitance of the sensor with the cable attached. The measured value should be within the range specified by the corresponding length sensor and cable data sheet. The range of the tester is usually set to 20nF. The red probe is connected to the core of the cable, and the black probe is connected to the outer shield. Note that you should not hold both connection ends at the same time. 2, Test resistance: Measure the resistance at both ends of the sensor with a digital multi-meter. The meter should be set to 20MΩ. At this time, the reading on the watch should exceed 20MΩ, usually indicated by “1”.5.4 Fix mounting bracket | Steps | Picture |
| 1） Unpack the sensor and check if the sensor is intact. Straighten the sensor to keep the sensor straight and flat.2） Open the mounting bracket in the box and install the bracket along the sensor about 15cm intervals.3） Put the mounting bracket together with the sensor into the cutting slot. The upper surface of all the brackets is about 10mm away from the road surface. 4）Bend the sensor end down 40°, bend the joint down 20°, then bend it 20° upward to level. |  Dimension |
2 Axes
3 Axes
4 Axes
6 Axes