Toshiba LF620F Instruction Manual page 119

(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
←Low cutoff
x 1.25
0
-(Low cutoff x 1.25)→
Reverse direction 0 Forward
Range output
ON
No.2
From reverse range to forward range
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output (%)
125
Range 3 100
Range 4
Hysteresis
0
OFF ON
ON
■
←Low cutoff x 1.25
4mA
Flow rate
Range output
OFF
－ 118 －
Range 1
Range 2
Hysteresis
0 Forward direction
ON
Forward to Reverse direction change
Low cutoff x 1.25→
Low cutoff
x 1.25→
Reverse 0 Forward
ON
No.2
From forward range to reverse range
6 F 8 A 0 9 2 8
20mA
4mA
Flow rate
OFF
OFF
Output
0
← -(Low cutoff x 1.25)
Flow rate
OFF