Hydronet Co., Ltd.

PRODUCT

Groundwater Monitoring Equipment

Data Logger

Data Logger

LCD Type Data Logger

Model : STU: STU collects and saves several data (ex: water quality data) and transmits it to a remote server via CDMA/GSM data communication. This model basically has 3.2” QVGS(4008240) Color TFT-LCD and keypad for improved convenience and functionality.
STU is designed with durable and stable circuit to fit the outside environment and also can be operated with only built-in battery for the long term.

Application

① Environment & Disaster Filed

② Engineering & Architecture Field

③ Other area for multi-purpose data logger
Features

· Wide sensor compatibility (Digital/Analog)
· Durable and stable circuit design
· Ultra low power consumption by the digital electric power control technology
· Reliable ESD & built-in Surge Protector
· Battery voltage monitoring & Event Alarm by SMS
· Multichannel connect supply(Mobile/Web)
· Wireless Remote Firmware Upgrade
· Dust & Water Proof [IP 68 Grade]

Specification

Model Name	STU
Processor	High performance, Low power consumption ARM Cortex M3
Dimensions(exclude connector)	196mm(H)x152mm(W)x46mm(D)
Supply Voltage	DC 12Volt
Supply Current	≤50mA @ LCD active, exclude CDMA modem, ≤60mA @sleep mode
Memory	Micro SD up to 4GByte / internal serial flash up to 4MByte
Wireless Communication	CDMA or WCDMA or 400MHz band RF modem(option)
Display & Control	400x240 QVGA Color TFT-LCD & Keypad
Built-in Surge Protection Devices	each port, 3 stage
Inner Battery	14.4V Lithium 19Ah
Operating condition	Temp.-20~55˚C, R.H. ≤99%(Non-Condensing)

External port

USB Communication	Serical comport mode / mass storage mode
Serial Communication	RS-485 or RS-232C, SDI-12, Opto-isolated 2-Wire TTL(optional)
Antenna	SMA, CDMA or RF modem
External DC Power	Solar panel or External Battery or External DC power
Digital input	High impedance
Digital output	Power, Open Collector, 3.3V TTL