Seametrics FT400-Series User 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
PULSE PASSTHR
U
PULSE SCALED
SENSOR
INPUT
PO
WER
4-20 mA
Flow Sensor
Red
White
Black
S
24 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
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