5 Introduction
The OTT netDL unit is an Internet protocol (IP) enabled datalogger that is especial-
ly designed for hydrometry, meterology and environmental measuring technology.
It is available in two models: OTT netDL 500 and OTT netDL 1000.
The standard version of each datalogger provides four physical input channels, an
LCD display, and a jog shuttle. (
The jog shuttle is a special operating button that
can be rotated and pressed.)
On request, the OTT netDL is available including
different expansion cards (OTT netDL 500: 2 slots; OTT net DL 1000: 3 slots) and
a built-in GSM modem. Additionally, OTT netDL 1000 has an Ethernet interface
as well as a second serial interface.
Plug-in screw terminal strips allow easy connection of sensors and power supply
without having to open the unit. Two LEDs show the operating states of the data-
logger as well as of the GSM modem.
Configuration and parametrization are carried out using the "OTT Data Logger
Operating Program" PC software. This software allows the system to be conve-
niently and flexibly tailored to a wide range of measurement requirements of a
station.
All inputs are equipped with an internal overvoltage protection. The very low
power consumption allows the unit to be operated with solar power without
problem.
Using the internal or external GSM modem (cellular radio modem), remote data
communication as well as remote parametrization may be done over the GSM
cellular radio network (GSM = Global System for Mobile Communications).
Fig. 2: OTT netDL IP datalogger
Top: OTT netDL 500
Bottom: OTT netDL 1000
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