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JSF-2 RE

JSF flow switch for 1…8″, suitable for aggressive media, reduced switching values

This flow monitor was specially developed to monitor the flow of liquid media. The monitor is typically used in mechanical and apparatus engineering, for monitoring oil, cooling and lubrication circuits or as a low-water safety device in sprinkler systems, heating systems, chillers and heat pumps. They are installed vertically in a horizontal pipe. The calming section must be at least 5 times the pipe diameter upstream and downstream of the paddle. The maximum flow can be considerably higher than the maximum setting value of the monitor. Not tested for drinking water.

This device has reduced switching values and is therefore suitable for lower flow volumes. Suitable for aggressive media: All parts of the flow monitor that come into contact with the medium are made of V4A.


SKU: JA060400 Categories: , ,
Number of control ranges1
Output signalswitching
Pipe dimension1″…8″
Electric connectionscrew terminals
With explosion protectionNo
Colourgrey
RAL colour number (similar)7035
Sensor elementflow paddle
Function type (systems engineering)
Internal settingYes
Bearing temperature–40 … 85 °C
Max. air humidity (non-condensing)95 % r.H.
Housing material
Paddle materialstainless steel
Carrier materialV4A
Max. Pressure500000 Pa
Max. switching voltage230 VAC, 50 Hz
Max. switching current15 (8) A
MediumFluid
Min. switching voltage24 VAC, 50 Hz
Min. switching current150 mA
Mounting/attachmenttapered Whitworth pipe thread R1″
Surface finishmatt, matt
Test mark approvalCE, Bauartgeprüft durch TÜV
Switching element
Switching contacttwo-way contact
Potential free switching contactYes
Switching power3450 W
Protection classIP65, IP65
Protection classI
Safety and EMCin accordance with DIN EN 60730
Ambient temperature−40 … 85 °C
Degree of contamination2
AssemblyFlow monitor, paddle set
Dimensions (W x H x D)71 mm x 130 mm x 67 mm

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