Vaisala HMT360Series - HMT360 to Galvanic Isolator Connection

Electrical connections________________________________________________________________
Vaisala _________________________________________________________________________ 25
HMT360 connected to a galvanic isolator
a) current signal controller
b) voltage signal controller
FIGURE 4-1. HMT360 connected to a galvanic isolator.
C H 1
+ +-
-
C H 2
Rl
U
Power Supply
Galvanic
Separator
Controller
U = I*Rl
L+
L-
C H 1
+
+
--
C H 2
I
Power Supply
Galvanic
Separator
Controller
L+
L-
I = 4...20mA
HAZARDOUS AREA SAFE AREA
HAZARDOUS AREA SAFE AREA