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4
INTRODUCTION
The LOGBOX SE is a data logger for slow varying low voltage 0-3V signals and digital RS485 instruments using Modbus®. It
features low noise, high resolution and low power consumption as well as a GSM modem for FTP or email upload.
The LOGBOX SE is a universal data logger, configurable by software, suitable for mobile as well as permanent installation
and can be used in a laboratory and in the field. It can be used under all weather conditions. A mounting plate for
installation on a mast or pole is provided.
4.1 Changes to manual
Added DustIQ and Lufft WS weather station. Updated to LogboxSE Setup software 1.9 with added Set Default button, SMS
request to modem, log file send intervals smaller than 1 hr. Also added are communication possibilities via the Serial2
RS232 port using ASCII or Modbus® commands.
As of 2019 a new board with a new GSM modem is used, starting with serial number 180092. This modem supports 2,3 and
4G LTE communication.
Added warning that USB power is not enough for GSM operation.
5
OVERVIEW
The LOGBOX SE is designed for measuring, processing and recording (data logging) measured data in real time for the
needs of relatively slow signals analyses. It is designed for ultra-low power consumption and will run many weeks
unattended on the internal AA batteries.
It offers four analog inputs, which can be configured by software as unipolar inputs or as bipolar differential inputs with
24 bit resolution as well as four single ended inputs with 12 bit resolution. With definition of polynomial coefficients (of the
3-rd order) measured values can be converted to engineering units on the fly.
Four digital inputs are configurable by software for measuring frequency, time or as counters. Again, with definition of
polynomial coefficients (of the 3-rd order) the measured values can be converted to engineering units.
Internal values that can be logged are: V
All logged data will be stored on the internal SD card which comes with 512MB capacity and is enough for a few years of
data logging.
For optional communication to a PC the LOGBOX SE uses either its RS-232 communication port, the internal USB port or
the GSM modem. For longer physical data lines the RS-232 signals can be converted to RS-485 by using locally bought
RS-232 to RS-485 converters.
A Real Time Clock circuit keeps track of time and date and is powered from a standard C2032 lithium battery. Operational
life is more than 10.000 hours. The clock can be synchronised daily using the GSM modem with the right 2G GPRS SIM card.
For signalling and powering external devices the LOGBOX SE has a built-in output capable of handling a current up to
200mA.
Additionally, a precise reference voltage of 2.5V
supplied with each unit and stored in non-volatile memory.
The LOGBOX SE offers 6 waterproof cable glands for feeding cables to the internal connectors like sensors, solar panel or
external power supply or battery.
, V
, V
, V
, GSM signal and Atmospheric pressure.
RTC
MAIN
POWER
OUT
is available of which the exact value is printed on the calibration sheet
DC
6
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