1. Description
DG800A RTU telemetric datalogger integrates traditional DTU terminal function and 2.5G / 3G / 4G transmission, to achieve data collection, storage, control & transmission function for hydrology, water resources and other applications.
The datalogger uses high performance industrial 32-bit communication processor and wireless module with embedded real-time operating system as software support platform to provide RS232, RS485, switch input/output and other interfaces for a variety of application requirements for hydrology, water resources and others.
The product can be widely used in various water conservancy information construction areas, such as hydrology, water resources, water environment, water pollution, mountain torrent disasters, reservoir safety, dam safety remote monitoring and control.
2. Features
Communication Protocol
u Standard for data communication of pollution emission auto monitoring system. The upload data is minute data (5 minutes) and hour data.
u Transmission Control Protocol (TCP)
Major Functions
u Timed acquisition of sensor data
u Timed reporting of sensor data
u Local download of historical data
u Report for battery voltage
u Local manual configuration
u Remote instruction operation
Product Features
u Large data storage capacity: 16MB of data storage space for more than 3 years of data.
u Communication: GPRS / CDMA / 3G / 4G.
u Low power consumption.
u Local configuration: support external LCD / keyboard and serial port configuration.
u Remote management: support remote parameter configuration (support platform configuration), remote program upgrade. Provides powerful central management software for easy device management (optional).
Stable & Reliable
u High performance industrial wireless module
u High performance industrial 32-bit communication processor
u Wide power input (DC 5 ~ 36V)
u WDT(Watch Dog Timer) to ensure system stability
u RS232 / RS485 interface, built-in 15KV ESD protection
u SIM / UIM card interface, built-in 15KV ESD protection
u Power interface: built-in reverse-phase protection and overvoltage protection
u Antenna interface: lightning protection (optional)
3. Specifications
Wireless
Item | Content |
Wireless module | Industrial wireless module |
Standard & Band | Support EGSM900/GSM1800MHz dual-band, GSM850/900/1800/1900MHz quad-band (optional) Support GSM phase 2/2+ Support GPRS class 10, class 12 (optional) |
Theoretical Bandwidth | 85.6Kbps |
Transmitting power | GSM850/900：<33dBm GSM1800/1900：<30dBm |
Receiver sensitivity | <-107dBm |
Hardware
Item | Content |
CPU | Industrial 32-bit communication processor |
FLASH | 2MB (expandable to 8MB) |
SRAM | 512KB (expandable to 1MB) |
Data Storage Flash | 16MB |
Interface
Item | Content |
Serial port | 2 RS232 and 2 RS485 interface, built-in 15KV ESD protection. Serial parameters are as follows: Data bits: 8 bits (optional 5,6,7 bits) Stop bit: 1 bit (optional 1.5, 2 bits) ECC: no parity (optional odd /even parity, SPACE and MARK check) Serial port rate: 110~230400bps |
Indicator light | The indicator light has the system "SYS" indicator |
Antenna interface | Standard SMA female antenna interface, characteristic impedance 50 ohms |
SIM/UIM card interface | Standard clamshell user card interface, support 1.8V / 3V SIM / UIM card, built-in 15KV ESD protection |
Power interface | Industrial terminal interface, built-in power reverse-phase protection and overcurrent / overvoltage protection |
Power switch | Standard rocker switch |
Wake-up button | Universal touch switch |
Ground terminal | M4 screw ground protection terminal |
External LCD screen | 192 * 64 dot matrix STN LCD with keyboard (optional) |
Application interface | 4 analog input interface (16-bit AD, support 4-20mA current signal input, optional 0-5V voltage signal input) |
2-way switch input interface (optical isolation). Logic 1: wet joint 0-3VDC or dry joint ON; logic 0: wet joint 5-30VDC or dry joint OFF | |
2 relay output interface Maximum switching voltage: 30VDC / 220VAC Maximum switching current: 4A Maximum switching power: 120W / 880VA | |
4 controlled output power (output voltage the same as the device power supply voltage. Default as 12V. Single rated output current: 1A, Total rated current for 4channels: 2A, built-in overcurrent protection) |
Power supply
Item | Content |
Standard power supply | DC 12V/1.5A |
Power supply range | DC 5~36V |
Standby current | <2mA (12V) |
Working current | <65mA (12V) |
Physical characteristics
Item | Content |
Housing | Mental Housing, IP30. Security isolation between shell and system, especially suitable for industrial control field |
Dimensions | 180.5*125*25.8 mm (Length x Width x Height, exclude antennas and mounting parts) |
Weight | 580g (host) |
Other conditions
Item | Content |
Operating temperature | -35~+75oC（-31~+167℉） |
Storage temperature | -40~+85oC（-40~+185℉） |
Relative humidity | 95% (No condensation) |