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KOBOLD FPS flow switches are used wherever reliable control for min. or max. liquid flow is required. The flow switch operates on the paddle-bellows principle. The flowing medium exerts a force on the paddle and thereby actuates a micro switch. The interchangeable paddles, in conjunction with an external adjustment screw, allows for adjustment over a wide range of switching points and easy adaptation of the instrument to different pipe sizes. The internals of the instrument are separated from the process by the bellows making the FPS an excellent choice for dirty media. The FPS-6 series is a special design variation used when lower switching points are desirable.
Technical Details
| Brass design: | Bellows: MS 58 Bronze Paddle: stainless steel 316L |
| Stainless steel design: | Bellows: stainless steel 321 Paddle: stainless steel 316L |
| Max. medium temperature: | -40 ... +250°F |
| Max. ambient temperaturer: | -31 ... +150°F |
| Max. allowed pressure: | brass 160 PSIG stainless steel 435 PSIG |
| Max. pressure loss: | approx. 0.15 ... 0.44 PSIG |
| Process Connection: | 1" NPT male |
| Inlet and outlet pipe section: | 5 times nominal pipe size |
Electrical Details
| Dust-proof microswitch: | SPDT contact |
| Switching voltage: | max. 24 - 250 VAC |
| Switching current: | max. 8 A (inductive load) max. 15 A (resistive load) |
| Electrical connection: | cable gland |
| Case: | base part ABS, cover PC (transparent) |
| Protection type: | IP 65 |
Electrical Connection
RED-WHITE opens with reduction in flow
RED-BLUE closes with reduction in flow
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