Liquid Controls IT375 - Manual (Page 21)

Sponsler, Inc. Model IT375 Flowmeter Input Pg. 21
1. Squarewave, CMOS or Pulse
2. Open Collector
With 15
µA/150µA internal pull up current
3. Reed Switch - Battery Powered
With 15
µA internal pull up current
Note: For a switch or reed input with contact bounce link DBL can be switched "on". This will eliminate the effect of switch bounce while
limiting the input frequency to 200Hz.
4. Reed Switch - External DC Power
With 150
µA internal pull up current
Note: For a switch or reed input with contact bounce link DBH can be switched "on". This will eliminate the effect of switch bounce while
limiting the input frequency to 200Hz.
Link Settings
Link 1
Link 2
Link 3
COIL PULSE
DB DBH
NPS
Switching threshold voltage is 1.3 volts.
Link Settings
Link 1
Link 2
Link 3
COIL PULSE
DBL DBH
NPS
Link Settings
Link 1
Link 2
Link 3
COIL PULSE
DBL DBH
NPS
eg. Positive displacement flowmeters
with reed switch outputs.
Link Settings
Link 1
Link 2
Link 3
COIL PULSE
DBL DBH
NPS