Wireless Water Rope Sensor
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Description
The water immersion wireless sensor is based on the advanced Lora spread spectrum technology, 470~510MHz global free radio frequency ( 868MHz, 923MHz free radio frequency can also be used ) , powered by DC7~24V DC power supply, optional LCD screen to display sensor data, It can also be equipped with a relay alarm output of 1 channel, no wiring is required, and the construction is convenient. The water immersion sensor adopts the principle of liquid conduction, uses electrodes (or special water leakage sensing rope) to detect whether there is water, and wirelessly uploads the alarm signal through the switch output . Compared with the traditional 433MHz FSK modulation technology, Lora spread spectrum technology takes into account the communication distance, anti-interference, and low power consumption, ensuring a longer communication distance and stronger penetration ability (commonly known as the king through walls, which can penetrate 5~12 floors) , more suitable for obstacles or indoor applications, and can be widely used in the field of Internet of Things atmospheric environment monitoring such as smart homes, factories and commercial buildings.
Application:
indoor, car, warehouse, factory, environmental protection, etc.
Water Immersion (Spot) Parameters
Water Immersion (Line) Parameters
Water immersion measurement principle: According to the change principle of the water immersion resistance value of the electrode or non-positioned induction line, the special integrated chip performs signal amplification, shaping, comparison, and output high and low level or relay alarm signal
Measuring medium: liquid, conductivity > 5us/cm
Point measurement range: immersion 1mm
Line measurement range: 0.5~50m sensing line, non-positioning
Output signal: transistor or relay dry contact output
Relay contact capacity: Contact capacity (resistive): 1A/AC220V, DC24V
False alarm rate: <100PPM
Signal isolation: power, input, output triple isolation
Isolation Strength: 1500V
0.5~50m induction line non-positioning
Supply voltage: DC 7 ~24V
Maximum power consumption: 10mA
Display mode: LCD LCD screen (option)
LCD screen specifications: 0802 8 characters per line, 2 lines of display
Alarm, control output (optional): 1 relay, contact capacity (resistive): 3A/AC220V, DC24
Working environment: -20~50 degrees, 15~90%RH (no condensation)
Storage environment: -25~60 degrees
Working pressure: 0.9~1.1 atmosphere
LoRaWAN working frequency band: European 863-870MHz (EU868),US 902-928MHz (AS923) etc...
Communication rate: SF12~SF7 , 250~5500bps programmable .
Networking method: follow the LoraWAN protocol stack
Working mode: CLASS A:(ALL), CLASS B:(BEACON), CLASS C:(CONTINOUS)
Communication method: data transparent transmission
Data format: default 1, 8, 1 , SF10 (1 start bit, 8 data bits, 1 stop bit, no parity, SF10 baud rate)
Collection frequency: remote setting, default 1 minute
Receive Sensitivity: -1 40 dBm
Communication distance: open outdoor > 2000 meters (external antenna, 20dB m , SF10 ) ; the longest distance is 6KM, (external antenna, 20dB m , SF12 )
Terminal Class: Slave
Node address: 0~ 256 , DIP switch hardware setting
Networking method: star wireless network
