Toshiba LF620 Instruction Manual page 118

(2) Automatic selection of bidirectional flows multi-range with an internal signal
Reverse direction
Range output No.1
Range output No.2
Reverse to Forward direction change
Output
0
-(Low cutoff x 1.25)→
Reverse direction 0 Forward
Range output
ON
No.2
From reverse range to forward range
output (%)
Range 3
Range 4
Hysteresis
0
OFF ON
ON
←Low cutoff x 1.25
←Low cutoff
x 1.25
4mA
Flow rate
OFF
125
100
Range 2
Hysteresis
0
ON
Forward to Reverse direction change
■
Low cutoff x 1.25→
Reverse 0 Forward
Range output
ON
No.2
From forward range to reverse range
− 117 −
6 F 8 A 0 9 2 7
Range 1
Forward direction Flow rate
OFF
OFF
Output
Low cutoff
x 1.25→
0
← -(Low cutoff x 1.25)
Flow rate
OFF
20mA
4mA