OMC-042 / 043 / 044 Data loggers
Users
’ manual
page 10
Models and Editions
OMC-042
The OMC-042 data logger is equipped with a built-in QUAD-band GPRS-modem, an internal temperature
sensor, 4GB micro SD card and a 2FF SIM card slot. The logger can be powered by an internal 3.6 Volt
Lithium battery that will last for years when the logger is configured in a low-power mode. It is also possible
to power the data logger using an optional integrated solar panel with 3xAA rechargeable NiMH batteries.
The data logger can acquire physical signals by 4 current loop inputs, 4 digital inputs and 2 hi-res amplified
differential voltage inputs, which can be used to connect pyranometers or in combination with a stable
excitation voltage
to connect “Wheatstone resistive bridge sensors” like load cells. The data logger is
provided with generic serial port drivers to capture measurements from ASCII, MODBUS/RTU, NMEA or
SDI-12 transponders. Custom drivers can be developed on request. External sensors/transponders can be
powered by the data logger itself, to prevent them to consume power while the data logger is asleep. The
excitation voltage is switched off during sleep as well.
OMC-042
OMC-042
Powered from a 3.6V DC SAFT LSH20 or equivalent D-size lithium battery.
OMC-042-01
With integrated 3 x AA NiMH charger powered from 1Wp integrated solar panel.
OMC-042-02
Like OMC-042 but with TFT display integrated in cover.
The data logger will be supplied without pre-mounted cable glands, giving the user the freedom to choose
the number and size of the glands them self to avoid unnecessary points of risk for moisture penetration.
We recommend removing the PCB before drilling.
1) Analog inputs
2) RS232 connector
3) Excitation DC/DC convertor
4) Digital inputs
5) SDI-12, power switch and
Excitation connector
6) RS485 connector
7) Power switch DC/DC convertor
8) RTC clock battery
9) Power supply connector (to cover)
10) Fuse
11) Processor
12) Antenna Connector
13) Quad Band Modem
14) USB Connector
15) SIM (2FF) & SD-card Holder.