LSI LASTEM M-Log – User’s manual
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calculated measures)
Derived
calculations
Function library for derived calculations applied to acquired measures or calculated:
Mobile statistic (minimum, arithmetic average and ed angular, maximum: statistic sliding from 2
to 128 values)
Crossed statistic (average and instantaneous totalization from 2 to 5 measures)
Actuators output
Nr. outputs:
2 (mod. ELO011 excluded) +1 on pin9 of the connector of serial port 1
Max current for a single powered output
: 150 mA
Protections:
thermal and for overloaded current (> 0.15 A)
Power
Input voltage:
8 ÷ 14 Vdc charger
Average power consumption (without probes feed, @ 4.2 Vdc):
Illuminated display power on: 200 mW
4 channels acquisition: 2 mW
Radio power on: 200 mW
Power down: < 1 mW
Protections:
Internal overcurrent, shortcircuit
Max actuator current, with external load: 1.5 A
Transient voltage suppressor: 600 W, t > 10
s
Polarity inversion
Internal battery
Internal battery: rechargeable LiIon 1950 mAh, 4.2 Vdc
Recharge time
: about 8 hours
Discharge time
(energetic autonomy esclusively with a new and full charged battery): about 9
months
Actuation logics
3 actuators (only 1 for the model ELO011) with 10 actuation programmable logics; activation of
outputs according to AND o OR logics applied to one or more actuation logics:
Feeding of sensors with automatic anticipation
Daily timer (hour of activation and hour of deactivation)
Cyclic timer (ON status time, OFF status time)
Overcoming of threshold value (limits and hysteresis)
Logics for outdoor applications (according to the M-Log model): eolic alarm, evaporimeter
filling, flood alarm, snow level alarm)
Manual power on and power off
Measures
elaborations
Statistical algorithms for arithmetic and vectorial elaborations, uniquely programmable for each
measure, calculated on single time base, from 1 second to 12 hours, for all measures.
(default elaboration rate of measures: 10 minutes)
Communication
protocols
Serial port:
Native (CISS) for instrument configuration, internal clock date/time setting, data
download (instantaneous and elaborated measure values and diagnostic informations); GPRS
transmission support (TCP or FTP mode).
Radio:
data acquition from probes or LSI LASTEM datalogger with CISS protocol
Communication
lines
RS232 main serial line, communication speed from 1200 to 115200 bps, function of
instrument configuration and reception of instantaneous and elavorated data through LSI
LASTEM protocol; Bluetooth connection option
Ethernet RJ45 connection with TCP/IP protocol
RS232 second serial line, communication speed from 1200 to 115200 bps; function of
instrument configuration and reception of instantaneous and elaborated data through LSI
LASTEM protocol; availability of MODBUS and others protocols; connection to
GSM/GPRS modem
Internal calendar
clock
Format:
year-month-day-hour-minutes-seconds
Drift:
30 seconds/month (@ T = 25 °C)
Display
Alphanumeric, 4 x 20 charaters, illuminated with programmable power off
Functions displayed:
Instantaneous values of acquired sensors and calculated measures;
Signal of measures in allarm according to actuation logics;
Diagnostic of actuators state; opportunity of instantaneous modify of actuator activation state;
Diagnostic of communication lines and protocols;
Communication diagnostic (radio and GPRS);
Diagnostic data memory;
Product presentetion window of the instrument.
Keyboard
Membrane, 8 keys, indicators (LED) that display the operation state of instrument (OK/ERR), the
