Phonetics SENSAPHONE EXPRESS II User Manual page 19

SENSAPHONE
E
XPRESS
ABC
1
2
PHONE
DIAL OUT
GHI JKL
4 5
MESSAGES INPUTS
PRS TUV
7 8
POWER OUTPUTS
OPER
CODE 0
SYSTEM
LOCK
HALT
UNLOCK
OFF ON
POWER
4-20mA sensor
+
_
Figure 6: 4-20mA transducer using internal power supply
To use an external power supply, wire the positive lead from the sensor to the positive terminal
on the external power source. Wire the negative lead from the sensor to a numbered input
screw on Express II. Next, connect the power supply to Express II by wiring the negative
terminal on the power supply to the corresponding common screw on Express. See Figure 7.
®
12 Sensaphone Express II User's Manual
R
II
MONITORING SYSTEM
DEF
PROGRAM
3
DIAL IN
MNO
6 INQUIRE
SOUND
WXY
STATUS
9
DATA LOG
ENTER
ALARMS
ALARM
DISPLAY
CANCEL
(+)
+MIC- RELAY
BAT 12V 24V
+IN- +OUT- +OUT- NO COM NC
Input terminal
9 INPUT
C COMMON
10 INPUT
C COMMON
11 INPUT
C
COMMON