6
2-3. Alarm output ports
These ports are used to connect an external alarm device. The unit uses a relay contact for its
alarm output. The devices to be connected must meet the following conditions:
Maximum rating: Load voltage
: 280 VAC/VDC Max.
Continuous load current: 100 mA
Be sure to make the correct connection by referring to the figure below.
Note: The screws on both edges of the terminal block are used to hold the terminal block. Do
not remove them.
2-4. AC adapter connection port
This port is used to connect the AC adapter. Insert the AC adapter plug all the way into the
terminal.
NB. When using another adaptor that was not included in the instrument, select an adaptor which
meets following specifications
<Primary output> Voltage
: 9VDC
Electrical Current : 600mA or more
Polarity
:
Plug diameter
: outer diameter ø5.5mm, inner diameter ø2.1mm,
length 9.5mm
High terminal: Connect the device for
the upper limit alarm.
Low terminal: Connect the device for
the lower limit alarm.
alarm device
power
