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KOBOLD paddle type flow switches can be used wherever a simple economic yet reliable monitoring instrument is required for flow switching applications. The device operates as follows: The flowing medium presses against the paddle of the KOBOLD flow switch. The paddle is fitted to one end of a balance arm which is in direct contact with a pre-stressed leaf spring. At the other end of the balance arm is a permanent magnet. This magnet actuates a reed contact located within a moveable housing outside the media. The reed contact switches on or off depending on the position of the permanent magnet and the switch housing. The status of the switch may then be used to electrically control the fluid flow. The movable reed switch on the Kobold PSR/PS allows the contacts to be set either normally open (N/O) or normally closed (N/C).
Switching Tolerance: | ± 15% |
Media Temperature | |
Brass/NBR Seal: | -4...158 °F |
SS/FPM Seal: | 14...230 °F |
Ambient Temperature | |
Brass/NBR Seal: | -4...158 °F |
SS/FPM Seal: | -4...230 °F |
Max. Pressure | |
Brass: | 1/4"...1" = 1450 PSIG 1-1/4"...1-1/2" = 360 PSIG |
SS: | 1/4"...1" = 3600 PSIG 1-1/4"...1-1/2" = 580 PSIG |
Ingress Protection: | IP 65 |
Mounting Orientation: | Horizontal Flow Preferred |
Max Flow Rate: | 5x Switching Range, Increasing |
Maximum Contact Ratings (cCSAus): | |
SPST Contact: | 2A, 20 VAC, 0.18 A, 230 VAC, max. 40 W |
SPDT Contact: | 0.13 A, 150 VAC, 0.5 A, 40 VAC, max. 20 W |