Cleaning The Flow Sensor; Technical Specifications - Flow Sensor; Technical Specifications - T-Piece For Flow Sensor - Priva Compass Installation Manual

Cleaning the flow sensor

1. Set the unit to maintenance mode (software-wise and pump switch(es) off).
2. Make sure the main irrigation line is pressure-less and, if necessary, empty.
3. Unscrew the flow sensor from the T-piece.
4. Clean the paddle wheel of the flow sensor using a small, soft brush.
5. Apply a little acid-free grease to the rubber O-rings to prevent them from being damaged when
placing the sensor back.
6. Screw the flow sensor back onto the T-piece: you can only do this one way.
7. Fill and bleed the main irrigation line to prevent water hammer.
8. Check that the flow sensor coupling is not leaking.
Technical specifications – flow sensor
Article description
Article number
Measurement principle
Measurement range
Accuracy
Reproducibility
IP code
Minimum Reynolds number required
Supply voltage
Output signal
Maximum current requirement
Cable length
Cable type

Technical specifications - T-piece for flow sensor

The K-factor is dependent on the flow sensor, the line diameter of the T-piece and the insertion
depth. A certificate showing the K-factor is supplied with the flow sensor. If the certificate is missing,
you can look up the K-factor in the tables below.
The maximum speed at which the pulses can be processed depends on the hardware used.
T-pieces - lines with a metric diameter
Article description
Article number
Line diameter, external (mm)
Measuring range (m
a flow rate of 0.3 .. 3 m/s and
lines of pressure class PN16
K-factor (pulses per litre)
Litre per pulse (1/K)
Installing Priva Compass - 00.014
Flow sensor GF2536-P0
(for lines Ø 20 – 110 mm
and 2 – 4")
750470
paddle wheel
0.3 - 3 m/s
1 % (of max. measured value)
0.5 % (of max. measured value)
IP67
4500
3.3 - 24 VDC
49 Hz per m/s
10 mA
7.5 m
2-core shielded twisted pair (22 AWG, 0.326 mm²)
PVC T-piece for flow sensor GF2536-P0, metric
750471 750472
20 25
(DN15) (DN20)
3 0.24 .. 2.4 0.38 .. 3.8
/hr) at
256.9 128.32
0.00389 0.00779
Flow sensor GF2536-P0
(for lines Ø 20 – 110 mm
and 2 – 4")
750470 (short housing)
750473 750474
32 40
(DN25) (DN32)
0.63 .. 6.3 0.98 .. 9.8
78.54 44.98
0.0127 0.0222
Flow sensor
Flow sensor GF2536-P1
(for lines Ø 125 – 160 mm
and 6")
750465 (long housing)
750475 750476
50 63
(DN40) (DN50)
1.54 .. 15.4 2.44 .. 24.4
27.4 15.72
0.0364 0.0636
83