Number
name
Function
①
inlet
Sampling air suction port. A clean pipe can also be attached to
the suction port for measurement.
Never block the suction opening during measurement, as this
will result in malfunction.
Please do so.
②
Analog
output
terminal
DC power input, analog output terminal, and alarm output
terminal. See "2.4 Analog Output Terminal
Connection" for detailed functions.
③
RS485
port (e.g.
LAN port)
MODBUS RTU communication connection terminal; connect a USB-
RS 485 converter (converter + cable); the PC side can set
parameters and read counts of this unit. (Refer to
"2.5 RS 485 Terminal Connection" for details.
④
power jack
DC power jack. Use the supplied AC adapter. See "2.1.1 Adapter
Use" for details.
⑤
LAN connector
MODBUS RTU communication connection terminal. Connect a router
or POE switch to this terminal, which allows the PC side to set
parameters and read counts of the unit.
See "1.4 LAN Connection" for details.
⑥
PARTICLE.
lamp
LED is orange; LED flashes each time a particle is detected. The
light turns off when no pa-particles are
detected.
⑦
STATUS
lamp
When the flow rate and LD status are normal, the LED is lit green. If
the flow rate or LD is abnormal, the lamp will light up red.
⑧
exhaust port
3720-06 is treated by a built-in filter to discharge the gas.
Never block the exhaust port during measurement, as this
will result in malfunction.
Summary of Contents for 3720-06
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