Sierra Monitor Corporation PF2A7H - Manual (Page 6)

9 8
OUT1
Analog Output
Load
Load
24VDC
1
4
2
3
Brown
Black
White
Blue
Main Circuit
Analog Output
OUT1
Load
Load
Brown
Black
Blue
White
1
4
2
3
24VDC
Main Circuit
Connector pin number
Min. measured flow Max. measured flow
1
5
Analog Output [
]
4
20
Analog Output [
]
Instantaneous flow [ / min ]
Output Specification
When the Lead wire with connector provided by SMC corporation
is used the color of wire (Brown, white, Black, Blue) shown on
circuit diagram will be applied.
28, 29
NPN open collector 1 output + Analog output
Max. 30V, 80mA Internal voltage drop : 1V or less
68, 69
PNP open collector 1 output + Analog output
Max. 80mA Internal voltage drop : 1.5V or less
Example of Internal Circuit and Wiring
4 3
1 2
Key
Turn off power before connecting or disconnecting the connector.
To insert the connector, push the connector socket of the lead
wire to the key part of the switch connector after aligning them
to each other and secure the connector with the lock nut.
To disconnect the connector, unlock the connector lock nut and
pull out the connector straight.
Install the lead wire separately from the route for power cable
or high-voltage cable. Otherwise, malfunction may potentially
result due to noise.
PF2A7 H- -28/68
Output 1 to 5V
PF2A7 H- -29/69
Output 4 to 20mA
Pin No. Pin name
1 DC ( + )
2 Analog Output
3 DC ( - )
4 OUT1
Model No.
Max. measured flow
( /min)
PF2A703H 150
PF2A706H 300
PF2A712H 600
Min. measured flow
( /min)
3000
6000
12000