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PADDLEWHEEL FLOW SWITCH – FLS F3.05

The simple insertion paddlewheel flow switch type F3.05 is designed to protect a pump from running dry or pumping against a closed valve. lt is equipped with a mechanical SPST contact activated when the flow velocity drops below the factory preset value of0.15 m/s (0.5 ft/s). The F3.05features a LED which show the flow status locally. A specially designed family of fitting ensures an easy andquick installation into all pipe materials in sizes from DN15to DN600 (0.5” to 24”).

APPLICATIONS

• Pump protection
• Filtration systems
• Cooling water systems

MAIN FEATURES

• C-PVC, PVDF, Stainless Steel body
• Easy insertion system
• High chemical resistance
• No-Flow alarm relay output
• Highly visible Local Bicolour Status lndicator
• Maintenance free
• Very low pressure drop

Technical Data

General

• Pipe Size Range: DN15 to DN600 (0.5 to 24 in.)
Please refer to Installation Fittings section for more
details
• Supply voltage: 12 to 24 VDC ± 10% regulated
• Supply current: < 50 mA
• Relay Output: mechanical SPDT contact, 1A @ 24
VDC, 0.1A @ 230 VAC
• Local Status Indicator:
– GREEN Led = Flow – RED Led = No Flow

• No-Flow Rate Point: 0.15 m/s (0.5 ft./s)
• Enclosure: IP65
• Wetted Materials:
– sensor Body: C-PVC or PVDF or 316L SS
– o-rings: EPDM or FPM
– rotor: ECTFE (Halar®)
– shaft: Ceramic (Al2O3), 316L SS (for metal sensors)

– bearings: Ceramic (Al2O3), none (for metal sensors)

Standards & Approvals

• Manufactured under ISO 9001
• Manufactured under ISO 14001
• CE
• RoHS Compliant
• EAC
• FDA on request for paddlewheel in C-PVC/EPDM,
PVDF/EPDM, SS316L/EPDM.

Maximum Operating Pressure / Temperature (25 years lifetime)
F3.05 Sensor
• C-PVC body:
– 10 bar (145 psi) @ 25°C (77°F)
– 1,5 bar (22 psi) @ 80° C (176°F)
• PVDF body:
– 10 bar (145 psi) @ 25°C (77°F)
– 2,5 bar (36 psi) @ 100°C (212°F)
• SS body:
– 25 bar (363 psi) @ 120°C (248°F)

DIMENSIONS

1 4 pole cable plug according to DlN 43650-B/lSO 6952
2 Local Bicolour Status LED
3 U-PVC cap for installation into fittings
4 O-Ring seals available in EPDM or FPM
5 C-PVC, PVDF or Stainless Steel sensor body
6 ECTFE (Halar®) Open-cell rotor Ceramic shaft, 316L SS (for metal sensors)
7 Ceramic bearings, none (for metal sensors)

Flow Measurement System

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