Seametrics TX800-Series - Manual (Page 7)

Micropower Sensor Only
Battery Type:
Lithium "C, 3V, replaceable
Red
White
Black
Sensor
Input
+
-
s
(Passes flow sensor
pulse on to another
control without
scaling)
Pulse Responsive
Metering Pump
PULS
E
PASSTH
RU
PULS
E
SCALED
+
-
+
-
Electronic
Metering Pump
Current sinking
polarity-sensitive
Page 5
CONNECTIONS DIAGRAMS
Connecting to PLC's and other non SeaMetric Controls
Red
White
Black
Red
White
Black
Signal
+DC Voltage
Ground
Signal
+DC Voltage
Ground
Figure 1
Figure 2
Input Designed for Current
Sinking (NPN) Devices
Input Designed for Current
Sourcing (PNP) Devices
2.2k Ohm Pull-up
Resistor
NPN
Device
NPN
Device
Red
White
Black
Red
White
Black
Signal
+DC Voltage
Ground
Signal
+DC Voltage
Ground
Figure 1
Figure 2
Input Designed for Current
Sinking (NPN) Devices
Input Designed for Current
Sourcing (PNP) Devices
2.2k Ohm Pull-up
Resistor
NPN
Device
NPN
Device
(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
Connections for FT420/3-Wire Mechanical Meter
FT415 Standard Connections
Caution: Do not apply
external power to the FT415.
3-Wire
Mechanical
Meter