HD33[L]M.GSM
- 9 -
V1.10
6
INSTALLATION
The data logger can be fixed to a wall or, for outdoor installations, to a
40 mm
diameter mast
by means of
HD2003.77/40 clamping.
F
or outdoor installations
, use the optional protection shield against solar radiations.
Data loggers supplied with clamping already mounted on the back of the housing are
equipped with protection devices against over-voltages connected to the clamping.
For a correct operation of the protecting devices, the yellow/green wire with fast-on
connector connected to the clamping should be connected to ground.
7
POWER SUPPLY
The data logger operates with direct voltage from 7 to 30 Vdc and can be powered by mains,
through the power supply unit
HD32MT.SWD
, or by a solar panel, through the power supply
unit
HD32WSF.S12
, that includes a 12 Vdc / 7.2 Ah battery and a charge regulator.
The following figure shows the pinout of the data logger power supply connector.
Power supply connector viewed from the outside of the data logger
The data logger has an internal rechargeable backup battery that allows holding the date and
time even without external power supply.
In case of solar panel power supply with 12 V battery, in order to protect the battery from
Plastic washers for thermal insulation of the
housing from metal parts
HD32MT4.6
Connector
reference
Power supply negative (pin 1)
Power supply positive (7)
Power supply negative (pin 6)
Power supply positive (pin 2)
Summary of Contents for HD33[L]M.GSM
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