WIKA FSD-4, Руководство по эксплуатации

Страница: 20 / 140

14399527.01 05/2021 EN/DE/FR/ES
20 WIKA operating instructions flow switch, model FSD-4
EN
Enter this value in the initialisation menu under “mu_F” and confirm.
The multiplier function can also be used without prior zero point adjustment.
5.6.2 Adjustment for flow unit %
1. Depressurise the system and switch off the flow.
2
.
Mount the flow switch and connect it electrically.
→ see chapter 5.1 “Mechanical mounting” and 5.2 “Electrical mounting”
3. Recall menu item “SETF” ▶ “MIN” and confirm “0”.
4. Set the maximum flow in the system.
Observe measuring ranges (→ see chapter 9 “Specifications”).
5. Recall menu item “SETF” ▶ “MAX” and confirm “100”
5.7 Switching functions
Hysteresis function
If the flow fluctuates around the set point, the hysteresis keeps the switching
status of the outputs stable. With increasing flow velocity, the output switches
when reaching the switch point (SP).
■
Normally open contact (HNO): Active
■
Normally closed contact (HNC): Inactive
With the flow decreasing again, the output will not switch back before the reset
point (RP) is reached.
■
Normally open contact (HNO): Inactive
■
Contact normally closed (HNC): Active
Fig.: Hysteresis function
5. Commissioning, operation