Datasheet

G
RHEASREG
®
WFS Rev. 2017 - V12 GB
Mechanical paddle vane switch, paddle switch, flow sensor or vane switch relay RHEASREG
®
WFS . It is used for flow monitoring of gaseous,
non-aggressive media in ventilation and air conditioning ducts, in air intake and exhaust devices of ventilators or electric heating registers (also for
contaminated, oily air), or as flow controller and airflow monitor.
TECHNICAL DATA
Switching capacity: 15 (8) A; 24…250 V AC
(Contact load) at 24 V AC min. 150 mA
Contact: dustproof microswitch as potential-free
single-pole changeover contact
Enclosure: plastic, material polyamide,
30% glass-globe-reinforced,
colour traffic white (similar to RAL 9016)
Dimensions: 108 x 70 x 73.5 mm (Thor 2)
Base body: galvanised steel
Moving arm: brass
Vane: stainless steel, V2A (1.4301)
Cable gland: M 20 x 1.5; including strain relief
Enclosure temperature: –40...+85 °C
Operating difference: ≥ 1 m ⁄ s
Electrical connection: 0.14 - 1.5 mm
2
, via screw terminals
Protection class: I (according to EN 60 730)
Protection type: IP 65 (according to EN 60 529)
Standards: CE conformity,
EMC directive 2014 ⁄ 30 ⁄ EU,
low-voltage directive 2014 ⁄ 35 ⁄ EU
FUNCTION
Monitor: Contact 1 - 3 breaks when flow rate drops to the preset value.
Simultaneously, contact 1 - 2 closes and
can be used as signal contact.
Device is factory-set to the minimum switch-off value,
which can be increased by turning the range adjusting screw clockwise.
Installation: vertical in horizontal air ducts.
Min. smoothing distance = 5 x duct diameter
upstream and downstream of vane. For airspeeds
> 5 m ⁄ s, vane is to be trimmed at the marked spots.
Thereby the minimum switch-off value increases
to approx. 2.5 m ⁄ s and the minimum switch-on value to approx. 4 m ⁄ s.
RHEASREG
®
WFS – Vane switch, mechanical, with paddle
Type ⁄ WG01 Switch-on value Switch-off value Item No.
min. max. min. max.
WFS
WFS-1E 2.5 m ⁄ s 9.2 m ⁄ s 1 m ⁄ s 8 m ⁄ s 1702-3020-0000-000
Spare part
PWFS-08
Spare paddle for WFS (Stainless steel vane) 7700-0010-2000-000