SF
Flow monitor, mechanical with paddle
Application
The SF is a flow monitor for liquid and gaseous media in pipelines, hydraulic systems from 1/2″ to 8″ diameter, as a flow monitor or low-water protection like pumps in oil and cooling circuits, refrigeration machines, evaporators, compressors and heat exchangers.
Technical Data
| Switching capacity: | 15 (8) A; 24...250V AC |
| Contact: | dust-encapsulated microswitch as single-pin, potential-free changeover switch |
| Housing: | ABS base (acrylonitrile butadiene styrene) V0, with polycarbonate cover, galvanised steel base, screw-in body: Brass or stainless steel (see table) |
| Housing temperature: | -40°...+85°C, max.media temp:-40...+120°C |
| Dimensions: | 140 x 62 x 65 mm |
| Paddle: | Stainless steel, V4A, 1.4401 |
| Electrical connection: | 0,14 - 1,5 mm² via screw terminals |
| Protection class: | I (according to EN 60 730) |
| Protection type: | IP 65 (according to IEC 529) |
| Function: | Contacts 1 and 2 (red-white) open in the case of flow drop to the set value. Contacts 1 and 4 (red-blue) close simultaneously and can be used as a signal contact. The unit is set at the factory to the minimum deactivation value, this can be increased by turning the range screw clockwise. |
| Installation: | Installation vertically into a horizontal pipe. T-piece Rx" according to DIN 2950. Calming distance at least 5 times the pipe diameter up- and downstream from the paddle. |
| Process connection: | Screw-in thread 1“ |
| Mounting screw con: | M16 |
