Data Logger RADIO - GSM/GPRS modem
Description
GSM/GPRS Data Logger RADIO is a device used for accurate and cost-effective measurement applications. Thanks to the various configurable inputs of current, voltage, pulse or SDI-12 signal, the logger supports the majority of the most popular sensors available on the market.
The device has been designed for wide use in meteorological and hydrological installations where precision, reliability and easy data access are key factors. Constant data transmission in 1 or 10 minute intervals is ensured by a built-in GSM/GPRS modem. All measurements are accessible through the intuitive web based Data Monitoring SystemSystem.
Inputs configuration
4 CONFIGURABLE INPUTS
Inputs can operate with the following signal types:
0-3V or 0-10V Software selectable two voltage ranges let you take full advantage of the data logger’s resolution. Parameters measured by voltage configuration include barometric pressure, ambient temperature, relative humidity, solar radiation, etc.
0-20 mA Allows the use of sensors with 4 – 20 mA or 0 – 20 mA current output. The main advantage of this kind of signal is that its accuracy is not affected by the voltage drop.
Pulse counter With pulse counter port configuration the logger detects and counts electric pulses generated by switch closures. The most common sensors using this signal type are anemometers, flow meters and rain gauges.
The configuration of every port is possible with the dedicated PC application.
SDI-12 is a digital port which supports up to 4 different measurements. The sensor’s address is defined with the use of the dedicated PC application.
USB port together with PC application allow the direct download of the backup data stored in the memory unit. They are also used for the initial configuration of the logger’s channels and SDI-12 address, SIM card and APN settings.
The reference voltage is dedicated to potentiometric sensors. Both terminal ends of the resistance element should be connected to this port. The wiper terminal must be connected to channel with the 0 – 3 V configuration.
The terminal is used for powering the data logger. The input voltage must be between 5 - 35V.
In order to power the sensors, the appropriate power source must be connected to this terminal. Supplied voltage is conveyed to the individual SPW connector of each channel for 100ms (millisecond) before each measurement.
The battery slot operates with two D-type batteries. It will automatically switch to the battery backup power supply when the voltage of the main power source will drop below 5V. Depending on the data upload interval, the logger can fully operate for up to 10 days on back up batteries.