COSA Xentaur Xentaur HDT - Manual (Page 29)

HDT User’s Manual
page 22
Appendix D: HDT Block Diagram & Connections
Xentaur Hybr
id
De
wpoint T
ransmitter
Loop P
o
w
e
r 5V
-28V DC
, will dr
a
w
4/20mA ( pin1= +V
E
; pin2= -V
E
)
PTFE
Insulator
Stainless Steel mounting threads and housing are
electrically connected to the wider pin marked with the ground symbol " ". They are isolated from the
current loop and sensor.
The sensor sintered filter
is electrically connected
to the loop negative pin #2.
3
1
2
Xen
tau
r
HD
T
28 V
DC
m
ax
.
+
1 3 2
Housing shield
100mA
resetable fuse
28V
3.3V
10K
Ω 47
Ω
0.001
µ
F
µ
P
0.033
µ
F
Voltage Regulator
4/20mA
Bell 202 modem
sensor
4/20mA loop
positive terminal
4/20mA loop
negative terminal
RFI filter
outer gold layer of sensor comes in contact with media being measured
inner conductor does not contact media being measured
stainless steel sintered filter connected to loop negative