Datakom DM-0301 Manual
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DM-0301 DIGITAL MULTIMETER
TRUE RMS 72x72mm
INTRODUCTION
These state-of-the-art panel meters are designed for
accurate measurement of the AC RMS voltage, AC
RMS current, frequency, active power and power
factor in single-phase systems. The current
transformer ratio can be set between 5/5A and
5000/5A via front panel buttons.
Devices have separate inputs for supply and
measurement.
The unit allows both manual selection of the display
channel and automatic scrolling.
Changing Display Selection:
By using the MENU
power and power factor can be selected and read
from display.
Every depression on the MENU
display the next measurement.
60 seconds after the last keypress, the display will
return automatically to the default display mode.
However the defult display mode is selectable by
programming.
SETTING THE CURRENT
TRANSFROMER RATIO
AND THE DEFAULT DISPLAY
Any measured parameter can be set as the default
display. Automatic parameter scrolling is also
provided. Selections are stored into a non-volatile
memory and is not affected from power failures.
Press MENU button
MENU
for 3 sec.
Press Up or Down
buttons until
requested Current
Transformer Ratio is
displayed.
Press MENU button
for saving current
MENU
transformer ratio and
displaying default selection.
Press Up or Down
buttons until
requested display
mode appears.
0 – Auto scroll values every 5
sec.
1 = frequency
2= active power
3= power factor
Press MENU button for
MENU
saving default selection and
exit for settings.
button, frequency, active
button will
PRECAUTIONS FOR INSTALLATION
AND SAFE USE
Failure to follow below
instructions will result in
death or serious injury
Do not open the unit. There is no serviceable parts
inside.
Fuses must be connected to the power supply and
phase voltage inputs, in close proximity of the unit.
Fuses must be of fast type (FF) with a maximum
rating of 6A.
Disconnect all power before working on equipment.
When the unit is connected to the network do not
touch terminals.
Short circuit terminals of unused current
transformers.
Do not try to clean the device with solvent or the
like. Only clean with a dry cloth.
Verify correct terminal connections before applying
power.
Electrical equipment should be serviced only by
competent service personnel. No responsibility is
assured by the manufacturer or any of its
subsidiaries for any consequences arising out of
the use of this material.
Only for front panel flush mounting.
Current Transformers must be
used for current measurement.
No direct connection allowed
Before installation
Read the user manual carefully, determine the
correct connection diagram.
Remove all connectors and mounting brackets
from the unit, then pass the unit through the
mounting opening.
Put mounting brackets and tighten.
Do not tighten too much, this can brake the
enclosure.
Make electrical connections with connectors
removed from sockets, then place connectors to
their sockets.
Note that the power supply terminal is separated
from measurement terminals, with common neutral
point.