23 Error correction
64 99E13331xx-mub-en - V07 2021/03
Signal configuration VFS 2-40
1 Temperature signal 0.5-3.5 V measured to pin 3 Yellow
2 Flow signal 0.5-3.5 V measured to pin 3 White
3 Ground 0 V Green
4 Power supply 5 V/DC Brown
Pin-assignment flow signal
Pin assignment temperature signal
23.4 Checking the FlowSonic flow sensor
Risk of death by electrocution!
Disconnect the device from the power supply before opening the body.
All work on the open device may only be carried out by professional
personnel.
Only for FriwaMidi, FriwaMaxi, FriwaMega:
1. Remove the front panel.
2. Connect the voltmeter with the plug of the flow sensor at the controller (see illustration
on pin assignment).
3. Measure the tension of the flow sensor with a voltmeter and compare it to the following
table. Small deviations are acceptable.
4. After the completed measurement, mount the front panel.
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