URK
URK K03/0817
page 5
8. Operation
In order to initialise the inductive switch function, it is essential that the float activates the contact
once in each direction.
Adjustment of limit-values
The switch-point can be adjusted to the desired levels by using.
Reference edge:
approx. the middle of the sensor.
Slide the switch housing up or down until the reference edge coincides with the desired
switch-point scale reading.
Overranging
With non-pulsating flow, the maximum flow rate can be exceeded. Only an increase in pressure
loss will result (max. permissible operating pressure must not be exceeded!)
9. Maintenance
If the medium to be measured is clean, the series URL is virtually maintenance- free. If deposits
form on the inner housing or parts, periodic cleaning of the unit is recommended. Remove the
units from the piping with a suitable tool; clean the flow meter with a suitable cleaning agent or
make use of an ultrasonic bath.
10. Technical information
Installation position:
vertical (flow from bottom to top)
Accuracy class:
4 according to VDI
Max. temperature:
100°C (65°C for PVC)
Max. pressure:
03H…23H; 16 bar (with PN 16 flange)
25H…33H; 12 bar (with PN 16 flange)
35H…41H; 8 bar (with PN 16 flange)
01L…23L; 16 bar (with PN 16 flange)
25L…33L; 10 bar (with PN 16 flange)
in all other cases 6 bar
Calibration conditions:
water:
20°C, air: 20°C,
air pressure:
1.013 bar abs.
Contact (optional):
proximity switch: PNP
open collector, n/o contact
Supply voltage:
12…24 VDC
Current consumption:
max. 10 mA
Cable:
2 m, PVC-insulated
Ambient temperature:
-25…+70°C
Protective category:
IP 67
