SF1RE Liquid flow switch

Electromechanical flow switches, suited for pipes of industrial plants: heating and air conditioning, refrigeration systems and heat pumps. Available in brass (suitable for normal media), and stainless steel AISI 316L (compatible with certain aggressive media).

Specifications for SF1RE
For pipes (diameter) 1...8"
Flow 0.2…55.3 m3/h
Media Normal
"T" pipe fitting -
Max. pressure 1100 kPa (11 bar)
Specifications for Liquid flow switch

Water, Water max. 50% glycol

Contacts Microswitch with switching contacts SPDT
Switch capacity 15 (8) A, 24...250 V AC
Ambient temperature -40…+85°C
Ambient humidity 10...90 % RH (non-condensing)
Media temperature -40…+120°C
Storage temperature -20…+85°C
Storage humidity < 95% RH
Connection Standard R1" (DIN 2999) for series SF1 and SF2
Material, casing cover Transparent Polycarbonate (PC)
Material, casing base ABS
Paddles Stainless steel AISI 316L
Weight 950 g
Dimensions 140 x 62 x 65mm
Protection class IP65
Isolation class I

Paddles for liquid flow switch in stainless steel AISI 316L. (Only for FLS304... and FLS350... Not for FLS306X…