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RHEASREG® WFS

Mechanical wind vane switch RHEASREG® WFS wind vane switch with switching output, in an impact resistant plastic housing, with stainless-steel paddle, for flow monitoring of gaseous, non-aggressive media.
The flow sensor device is used as a flow controller or air flow monitor in air conditioning ducts, in air intake or exhaust devices of ventilators or in electric heating registers (also for contaminated, oily air).


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产品编号 1702-3020-0000-000
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Switching capacity (Contact load)
15 (8) A; 24…250 V ACat 24 V AC min. 150 mA
Operating difference
1 m/ s
Contact
dust-proof micro switch
as single-pole potential-free changeover contact
Electrical connection
0.14 - 1.5 mm2 via terminal screws
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe-reinforced,
colour traffic white (similar to RAL 9016)
Base body
galvanised steel
Moving arm
brass
Vane
stainless steel, 1.4303, V2A
Housing dimensions
108 x 70 x 73,5 mm (Thor 2)
Housing temperature
–40...+85 °C
Cable gland
M 20 x 1.5; including strain relief
Dimensions
108 x 70 x 73,5 mm (Thor 2)
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.


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