IM-P323-32
CTLS Issue 5
40
SX80 and SX90 Quickstart Guide
3.4.5 Connection of a pressure transmitter
When using a loop powered pressure sensor like the Spirax Sarco follow
the wiring diagrams below for correct installation (SX80 below and SX90
opposite). We recommend connecting the sensor using an instrument
grade shielded cable for optimum performance.
Wiring diagram for connecting the transmitter SX80:
1A
1B
2A
2B
L
N
AA
AB
AC
VI
V+
V-
HE
HF
1 (+) (-2)
4-20 mA sensor
4 Screen
2R49
Transducer
supply
+24 V
0 V
V = 10-50 mV
i<30 mA
i = 4-20 mA
LA
LB
LC
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