Input signal connections, Figure 2. flowmeter powered by external supply – Precision Digital PD6830 User Manual
Page 15
PD6830 Pulse Input Rate/Totalizer Instruction
Manual
15
Input Signal Connections
Signal connections are made to a barrier terminal mounted in the base of the
enclosure. Input level and type are configured using two slide switches on the bottom
of the display module as shown in the lower right of the following figures.
ISO+
ISO-
S+
S-
COM
Flowmeter
(Pulse Output)
Power
Supply
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 2. Flowmeter Powered by External Supply
ISO+
ISO-
S+
S-
COM
Flowmeter
(Pulse Output)
Power
Supply
V mV
INPUT LEVEL
PNP NPN
INPUT TYPE
Figure 3. Opto-Isolated Flowmeter Powered by External Supply
V mV
INPUT LEVEL
ISO+
ISO-
S+
S-
COM
Flowmeter
(Magnetic Pickup Coil)
PNP NPN
INPUT TYPE
Figure 4. Self-Powered Magnetic Pickup Coil Flowmeter