Paddle flow switches, micro-switch contact, 1/2” BSPP male thread and Pt100 temperature sensor

Main uses: Water flow detection on water pipes with simultaneous water temperature measurement

Functional principle: Balanced paddle, perpendicular to the main flow, actuating a micro- switch. Flexible elastomeric gasket between

paddle and electric switch

Flow sensing

Main housing material

Paddle material

Mounting position

Mounting type

Voltage

Electrical rating

Ingress protection

Wire lengths (mm)

, ,

Maximum flow detection (L/min)

Minimum flow detection (L/min)

Nominal pressure at 20°C

Max operating temperature (°C)

Liquids temperature range (°C)

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Description

Size and pressure Flow sensing:

Cleavable paddle

Mounting:

1/2” BSPP thread

Contact:

Microswitch

Electrical rating Mounting position Type
PN10

R1Q

DN≥25

Dimensions

1: Paddle

2: Body

3: Cable

4: Temperature sensor

5: Temperature sensor cable

Main uses: Water flow detection on water pipes , with simultaneous water temperature measurement

Functional principle: Balanced paddle, perpendicular to the main flow, actuating a micro- switch. Flexible elastomeric gasket between paddle and electric switch. Temperature measurement is made by a plastic pocket located under the ½” thread

Main housing material: PPO, fiber glass reinforced, usable with potable water.

Paddle material: Polypropylene, resistant to ozone and water disinfection products

Paddle gasket: Santoprene, resistant to ozone and water disinfection products

Electrical rating: 5A resistive, 230V AC

Electric contact type: SPDT, open or close by flow rise

Liquids compatibility: For use with clean water and liquids without chemical incompatibility with PPO and Santoprene

Nominal pressure at 20°C: 1MPa (PN10)

 

Assembly on pipes:

 

 

Average Flow detection values vs pipe I.D. and paddle length (Liters/min)

 

Paddle length

Pipe ID (mm)***

25 32 40 50 63
*Close **Open *Close **Open *Close **Open *Close **Open *Close **Open
1 34 32 67 63 123 113 225 200 506 424
1+2 23 19 50 48 98 93 173 153 389 324
1+2+3 40 38 76 73 143 128 321 271
1+2+3+4 61 58 110 106 220 200
1~5 49 46 89 84 200 178
1~6 73 68 165 150
1~7 62 58 152 138
1~8 133 123
1~9 113 108
* Close by flow rise (L/min) of contact open at no flow position

** Open by flow decrease (L/min) of contact open at no flow position. Average values for indication only. Standard tolerances ±30%

Nominal diameter: Can be used on 32 to 63 mm internal diameter pipes

The paddle is cleavable and can be cut at various lengths upon pipe diameter. There are cutting lines numbered 1 to 9 every 5mm.

Recommended mounting position: Vertical, with paddle downside. Other positions are possible with a change in the calibration value related to the paddle weight. .

Water pipe connection: Male thread 1/2”(BSPP) and NBR gasket. Must be used on a BSPP ½” female fitting perpendicular to the main pipe.

Recommended torque: 7Nm

Liquids temperature range: 5 to 80°C

Ambient temperature range: 5 to 50°C

Ingress protection: IP65

Electrical connection:

Flow switch contact: 3 x 0.75 mm² cable, PVC insulation, style H05VVF.

  • Pt100 temperature sensor: 3×0.22mm² cable, nickel plated braided FEP insulation Flow and temperature connection cables length is the same

Installation instructions:

  • Check carefully the paddle orientation: The arrow on housing must be exactly parallel to the pipe
  • A5 mm minimum gap must be respected between end of the paddle and tube wall opposite to the 3/4”
  • We recommend the use of nozzles of length less than or equal to 18mm between the gasket seat and the inside of the tube and with an inner diameter greater than or equal to 20mm, to avoid blocking of the pallet

Accessories: 1/2” female PVC saddles forDN40 to DN100 (OD) PVC pipes, and other fittings: see last section of this catalogue

Options: cable with connector or terminals, other cable length, paddle type B (see type R1B)

 

Main references

Cable length
500mm 1m 2m
R1QH05079F43N050 R1QH05079F43N100 R1QH05079F43N200

Technical specifications sheet

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