Xylem FT420 RATE/TOTAL INDICATOR - Manual (Page 6)

(Passes flow sensor pulse on to
another control without scaling)
Micropower
Sensor
Battery Type:
Lithium "C, 3V, replaceable
Pulse Responsive
Metering Pump
Red
White
Black
Sensor
Input
Outputs
Pulse Passthr
u Pulse Scaled
+
-
s
-
+
-
+
Current sinking
polarity-sensitive
(Passes flow sensor
pulse on to another
control without
scaling)
Pulse Responsive
Metering Pump
PULS
E
PA
SSTHR
U
PULS
E
SCALED
SENSOR INPUT
PO
WE
R
4-20 mA
Flow Sensor
Red
White
Black
S
12-32 VDC
Loop Power Supply*
4-20 mA Device
-
+ +
-
+
-
+
-
+
-
+
-
BASIC CONNECTIONS
*FT420 ONLY
Current sinking
polarity-sensitive
Page 4
CONNECTION DIAGRAMS
Connections for FT420-65 (115 Vac Option)
Connections for FT420/3-Wire Mechanical Meter
FT415 Standard Connections
Caution: Do not apply
external power to the FT415.
3-Wire
Mechanical
Meter
AC IN
DC OUT
HO
T GROUND
-
+
POWER
4-20 mA
+
-
FT420
Lower Housing 115 Vac
NEUTR
AL
LINE