WxS Ext-017A
LoRaWAN displacement sensor
Product Highlights
ü Long-life conductive plastic material, made of high-precision displacement sensor.
ü Displacement range 50mm, accuracy 0.01mm
ü Used for long-term monitoring and recording of cracks at high altitudes and locations that are not easily accessible to structures
ü Cross-threshold report, plus periodic report every 2 hours (the threshold and the periodic report cycle are both user-configurable)
ü OTA (Over The Air) firmware upgrade, including to upgrade loader and application images
ü Analog and digital interface for external sensor connectivity and pulse counting (MPI)
ü Low power consumption, 5 – 10 years of battery operational life with 2 x AA Li-SOCI2 Battery
ü Optional DC 5V power source
ü Integrated internal antenna, or optional external SMA/IPEX antenna
ü Up to 5km reach in NLoS (Non-Line-of-Sight) and up to 18km LoS (Line-of-Sight) environments
ü IP67 enclosure rating
Application Architecture and Sample Applications
ØBuilding structure inspection , bridge structure inspection , highway slope detection
Specifications
Parameter | Value |
Sensor |
Displacement range | 0~50mm |
Linearity | ±0.05% FS |
Resolution | 0.01mm |
Temperature range | -60~150°C |
Service life | > 100*106 times |
Maximum operating speed | 10M/S |
Protection level | IP67 |
Data Report | Cross-threshold report, plus periodic report every 2 hours (the threshold and the periodic report cycle are both user-configurable) |
Wireless |
ISM Band | EU 863 – 870MHz；US 902 – 928MHz China 779 – 787MHz；EU 433MHz AS 923MHz；CN 470 – 510MHz |
Maximum Link Budget | 168dB |
Distance | Up to 5km NLOS; up to 18km LOS |
Antenna | Integrated internal antenna or external 1/2 wavelength whip antenna (SMA) |
Mechanical |
Dimension | 60mm x 100mm x 35mm (WxS8800) |
IP rating | IP67 (WxS8800) |
Operating Temperature | -40C to +85C (WxS8800)； |
Cable length | 0.5 meters |
Total Weight | >500 g |
Electrical |
Supply Voltage | 3.6 VDC |
Power Type | Replaceable 1 or 2 AA 3.6V Li-SOCI2 Battery; DC 4.5V – 12V optional |
Battery Life | 5 – 10 years (assume one motion event one day) |
Compliance/Certification |
|
.png)
| LoRaWAN 1.0.2 |
|
| FCC(America): 2AO7W-WXS8000, IC(Canada): 23701-WXS8000 CE(European Union)：B1810246 ROHS(European Union): R2BJ180927F0664E |
|
Installation Guide
Below diagram shows the general installation guide for WxS9800, it can be installed on any flat and solid surface, the lid is contacted with the surface and fixed via 2 self-tapping screws:
Below is the recommendation of the self-tapping screw and its sizes:
Horizontal installation
■ Vertical installation
■ The sensor has a good anti-stain structure inside.
Protection class IP65
.png)
■ Consider the long-term outdoor work and configure an outdoor waterproof box.
.png)
■ The picture on the left is the crack detection of the dangerous structure of POLYSENSE in Shaoxing, China.
Product application
Cracks in the bridge structure and expansion joints reserved for the bridge
Structural cracks in beams, walls, panels, etc. of old buildings
Crack detection of external walls of historical heritage buildings
Structural crack detection of important venues
Sensor principle
The function of the linear displacement sensor is to convert the linear mechanical displacement into an electrical signal. In order to achieve this effect, the variable resistance rail is usually placed at a fixed portion of the sensor. Different resistance values are measured by the displacement of the slider on the slide rail. The sensor rail is connected to a steady-state DC voltage that allows a small current to flow through the microamperes, and the voltage between the slider and the start is proportional to the length of the slider movement. Using the sensor as a voltage divider minimizes the accuracy of the total resistance of the rail, as changes in resistance caused by temperature changes do not affect the measurement.
Depending on the application scenario, the following is a multi-format displacement sensor appearance available.
on-line preview
