Remote Terminal Unit

1.Remote Terminal Unit Product Overview

Remote Terminal Unit is used in various water conservancy information, water affairs information, land disaster information and smart city construction areas.Remote Terminal Unit (RTU for short) integrates low-power wireless communication technology and Ethernet transmission technology, and has multi-channel analog and switch quantity acquisition functions and logic control functions. It has a built-in display screen for intuitive viewing of data and configuration of working parameters on site, and can monitor the change data and control status of on-site sensors, automatically alarm, and automatically report. It is mainly used for remote telemetry monitoring applications in water resources, water conservancy, meteorology, agriculture, environmental protection, oil fields and other industries.

2. Remote Terminal Unit Product Features

1. Adopt high-performance industrial-grade ARM processor with powerful logical computing capabilities.

2. The microprocessor containing WATCHDOG and FLASH makes the system more anti-interference capable.

3. Function of collecting change quantity: collect analog quantity signals such as pressure, water level, water quality, temperature, and weather, and automatically alarm when they exceed the limit.

4. Instrument data collection function: collect flow and rainfall data from flow meters and rain gauges.

5. IO status collection function: collect operating status signals of on-site IO devices such as valves, water pumps, etc.

6. Dual RS485 communication interface, support remote image taking.

7. It can be equipped with a large-capacity MicroSD card to automatically store data reports and support USB data export function.

8. Supports configurable analog alarm upper and lower limits, and automatically reports alarm information.

9. Support remote control function, which can remotely control water pumps, valves and other equipment.

10.Support power supply status and box door status detection.

11. Support the function of supplementary reporting during network disconnection to avoid data omission.

12. Support GPRS wireless communication and Ethernet wired communication at the same time.

13. Supports recording of multiple device communication protocols (please indicate the instrument model to be connected when purchasing).

14. It has automatic timing reporting and event-triggered reporting mechanisms.

15. Support MJ-GPRS protocol communication mode, convenient for direct connection with the monitoring center.

16. Support the "Water Resources Monitoring Data Transmission Protocol" and the "Pollutant Online Monitoring Data Transmission Protocol".

17. Built-in watchdog, no crash, automatic recovery after disconnection.

18.Industrial-grade quality assurance, stable and reliable performance, and high cost performance.

19. Provide serial port program upgrade and remote upgrade functions.

3. Remote Terminal Unit Technical Parameters

AI input configuration: 6 analog acquisition inputs (1 of which can acquire battery voltage).

DI input configuration: 5-way switch input.

DO output configuration: 3-way relay output.

Storage capacity: 8M loop storage.

Report storage: MicroSD card, supports USB flash drive data export function.

1-way wired Ethernet communication port (optional).

1-way 4G supports China Mobile, China Unicom and China Telecom communications.

Serial port configuration: 2-way RS485 (one for meter reading and the other for camera taking photos).

Baud rate: RS485 1200~57600bits/s optional.

Power supply: 9V~30V DC.

Average current: <40mA/12V.

4. Remote Terminal Unit Usage Conditions

Working environment: Temperature: -30℃～75℃; Humidity: <95% (no condensation)

Installation method: fixed hole installation

Dimensions: 160mm×148mm×41mm