洛拉万智能水表
Wireless remote water meter is based on the wired remote water meter, added the wireless module, the water meter has a routing function, construction and installation is simple, convenient, the network process automatically completed, solved the complex wiring construction problems. Wireless valve remote control water meter is based on the wireless remote meter, added the valve control function, solved the problems that user maliciously arrears of water charges, charges difficult, achieved a remote real-time monitoring and remote switching valves and prepaid functions.
自验收之日起一 (1) 年内，所有仪表均保证无工艺和材料缺陷。
RF parameters:
- LoRaTM Modem;
- Support FSK/GFSK/MSK/GMSK/LoRa/OOK etc.
- Operating Frequency: 863 to 870MHz, metering dedicated frequency band, no license required;
- Dual-channel and dual-speed switch automatically (frequency hopping), resist co-channel interference;
- Effective radiation power up to 90mW (19.5dbm);
- The power level can be adjustable
- Support multiple baud rates and multiple RF rates;
- High receiver sensitivity down at-140dBm;
- Ultra-long communication distance, the line of sight communication distance is 7 km for rural environment and 5 km in urban area;
- Fully compatible with LoRaWAN standards and devices come from other companies;
- Support ADR, higher rate, lower power, which is flexible to build up.
Power consumption:
- Working voltage 2.3 ~ 3.7V;
- Quiescent current ≤13uA, Average power consumption ≤20uA;
- The battery life of single ER18505M @ 3600mAh can last up to 10 years.
Electrical Characteristics:
Working conditions:
| Parameter | Min. | 类型 | Max. | Units |
| Operating Voltage | 2.3 | 3.6 | 3.7 | V |
| Power on time | – | – | 100 | ms |
| Working temperature range | -20 | 25 | 75 | ℃ |
| Operating humidity range | 10 | – | 90 | %rh |
| Voltage | -0.5 | – | 3.8 | V |
| I/O Level | -0.3 | – | VDD+0.3 | V |
| storage temperature | -40 | – | 125 | ℃ |
- Straight pipe length fore water meter is 10 times of DN, straight pipe length behind water meter is 5 times of DN.
- Flow direction should be the same as the arrow on the body directs.
Work power supply:
The operating voltage of alternating current or direct current shall be in the range of -15% to 10% of the standard voltage and the frequency of AC frequency should be ± 2% of the standard frequency.
Main technical parameters:
| Model-DN | Flow range | Q3 | Q4 | Q2 | Q1 | Min. reading | Max. reading | |
| Q3/Q1 | Q2/Q1 | 立方米/小时 | m3 | |||||
| LXSY-15 | 80 | 1.6 | 2.5 | 3.125 | 0.05 | 0.03125 | 0.0001 | 999999 |
| LXSY-20 | 80 | 1.6 | 4.0 | 5.0 | 0.08 | 0.05 | 0.0001 | 999999 |
| LXSY-25 | 80 | 1.6 | 6.3 | 7.875 | 0.126 | 0.07875 | 0.0001 | 999999 |
