OTT netDL Data Logger

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Data loggers for remote data collection & long term monitoring

The versatile OTT netDL 500 and 1000 data loggers were developed specifically for use in hydrology and meteorology stations. In addition to recording data, the data loggers are extremely low power and offer flexible data transfer options via the internet and mobile networks, providing a logging and telemetry solution for every project.

  • Ethernet, USB-Host, USB-Device, RS-232, Satellite, Cellular, Industrial Communication
  • High data availability due to large memory and redundant communication, Multitasking capability for short polling cycles, Communication via TCP/IP, Integrated Web Server, Ultra low power consumption, Design for harsh environments, Industrial communication
  • Yes
  • SDI-12, RS-485 (SDI-12), Modbus RTU, analogue-in (voltage and current), Impulse Input, Status Input
OTT netDL 500/1000 IP data logger for hydrological and meteorological applications
Communications interfaces
Ethernet RJ-45 10 Base-T (netDL 1000)
USB Host and USB Device
netDL 1000 2
netDL 500 1
Sensor interfaces (standard version)
SDI-12 V 1.3
RS-485 (SDI-12/Modbus RTU)
Pulse/status input
netDL 1000 4
netDL 500 2
Status/switch output 2
Input/output modules
Analogue inputs configurable
Analogue inputs, isolated configurable
Analogue outputs configurable
Serial input module for OTT Sensors
Barometric input board
Measuring channels
Standard 40
Optionally 120
IP communication
Integrated TCP/IP stack HTTP, HTTPS, FTP, SMTP, Socket…
Communication paths GSM/GPRS/3G, Ethernet/DSL, PPP over landline
Integrated Web server
Encrypted data transmission HTTPS SSL 3.0 / TLS 1.0 /1.1/1.2
Integrated modem (optional)
GSM/GPRS 900/1800, 850/1900 MHz
GSM/GPRS; 3G (UMTS/HSPA+) 900/1800, 850/1900 MHz; 800/850, 900, AWS 1700, 1900, 2100 MHz
Operating system RTOS with power management for minimal power consumption
Time synchronisation SNTP (Simple Network Time Protocol)
Electrical data
Power supply 9 … 28 V DC (typ. 12 V DC)
Power consumption at 12 V DC
Sleep mode < 250 μA; Sleep mode, impulse active < 10 mA
Active mode approx. 25 mA … max. 400 mA (depending on configuration)
RAM / NOR / NAND Flash 4 MB / 8 MB / 256 MB
Data memory
Capacity up to 1,100,000 values
OTT Parsivel spectral data yes
Graphical dot matrix 122 x 32 pixels
Illumination LED backlight
Control by jog shuttle
Status display 2 x LED (variant with integrated modem)
Environmental conditions
Temperature range
Operation –40 °C … +70 °C
Storage –50 °C … + 85 °C
Internal modem –30 °C … +70 °C
Display (display on) –20 °C … +70 °C
Relative humidity 5 … 95 % (non condensing)
Mechanical data
Dimensions (L x W x H)
netDL 1000 232 mm x 124 mm x 86 mm
netDL 500 148 mm x 124 mm x 86 mm
Housing ABS
Protection class IP41
Imagen de OTT netDL Data Logger
Imagen de OTT netDL Data Logger
Imagen de OTT netDL Data Logger
Imagen de OTT netDL Data Logger
Imagen de OTT netDL Data Logger


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