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Hazardous Area Specific Power Supply and barrier Requirements
The
MicroFlow-i
operates from a DC supply of 10 – 28VDC and will typically
draw less than 22mA. When connecting sensor to the PC software with a HART
modem, it is recommended to use a supply of at least 18VDC.
The
MicroFlow-i
cable is a twisted pair with overall cable screen. The twisted
pair is red and black, connect the red to +ve and the black to -ve. The screen
should go to signal ground.
Typical wiring for the
MicroFlow-i
:
Important Information
In the case of the Ex ia version, the sensor must be powered from an
approved I.S. safety barrier or approved I.S. power supply with the
following limits:
Uo <= 28V, Io <= 162mA, Po <= 1.03W
V
24VDC
I.S. EARTH
PSU/SENSE
LOAD/SENSE
HAZARDOUS
AREA
SAFE AREA
SINGLE ZENNER BARRIER
Ex ia Version 4-20mA mode
SINGLE ZENNER BARRIER
CURENT SENSED IN +ve
Ui<=28V
Li<=162mA
Pi<=1.03W
+
-
Содержание MicroFlow-i
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