The liquid pushes the paddle. The stem head includes a magnet for actuating the Reed switch. A counter-magnet in the housing, keeps the stem head in front of the Reed contact. When the pressure from liquid (high flow rate) is sufficient, the head position changes and the Reed contact status changes.

The Reed contact is NC either NO, 3 wires. It is recommended the use of a relay ES2001 to protect the Reed (please, see the doc. 250-01).

Housing and threading: Stainless steel 316 Ti, or brass
Thread: BSP 1/2” MG

Ring:
FPM for stainless steel model
NBR for brass model

Pipes: ND 50 to ND 200
Maximal temperature: 110 °C
Ambiant temperature: 70 °C
Maximal pressure: 25 bar
Contact: NO or NC (according to index)

Switching power:
26 VA / 230 VAC / 1 A
20 W / 48 VDC / 1 A (other on request)

Setting:
± 15 % of horizontal pipe value
(report to table)

Protection: IP 65

The setting values are for water at 20°C in a horizontal pipeline. The mounting can be vertical with upstream flow; the setting values will be increased. Maximal slope of downstream pipeline is 40%.