Technical Data Sheet 50466-632 July 2017 Flow Switches Flap operated flow switches Series 1200… and 1220... ● type 1200T/1200B ● type 1220T/1220B USE The type 1200 and 1220 flow switches are designed to detect any loss or excess of liquid flow within a horizontal pipe of minimum diameter 50mm. PRINCIPLE A hinged flap, positioned perpendicular to the direction of the fluid flow, actuates a rod, which hold a magnet at its upper end. This magnet actuates another magnet connected to an electrical switch, which deliver an alarm signal. The switch is set for a given flow named "the switch flow". (while ordering, customer must mentioned if this switching flow is need while flow is increasing or decreasing"). DESCRIPTION The instrument is available in two standard versions:  TYPE 1200: This is the simplest design, directly connected to the customer piping, which must drill its pipe and weld a threaded or flanged supplied tube. 1200 is delivered either with a screwed connection mode to the pipeline (1200T), either a flanged connection type (1200B).  TYPE 1220: Delivered already mounted on a connection bushing (pipe section), supplied complete with threaded or flanged connection type. This design should be simply bolt on an existing pipe line already fitted with flanges. Houdec Innovat

Technical Data Sheet 50466-632 July 2017 Flow Switches TECHNICAL DATA Standard housing FLOW RATES and DIMENSIONS Maximum operating conditions: Pressure 16 bar (higher value on request) / Temperature: 120°C (up to 250°C with heat screen option) H1 Light alloy box IP54; inlet through brass cable gland f/w neoprene diaphragm for electrical cable from 8 to 11 mm diameter. H3 Light alloy IP65, inlet through polycarbonate cable gland with neoprene ring and tension take-up for electrical cable from 8 to 10mm diameter H2 ATEX certified LCIE01ATEX6061X II2G EExdIICT6 Inlet through aluminium cable gland...

Technical Data Sheet 50466-632 July 2017 Flow Switches SPARES: Contact, Flap magnet assembly

Technical Data Sheet 50466-632 July 2017 Flow Switches ORDERING Code INSTRUMENT TYPE 1200 FLOW alarm fitted directly to the customer pipe 1220 FLOW alarm fitted to the customer pipe using a connection bushing (pipe section with flanges) I Code CONNECTION I T Threaded + welded connection I B Flanged connection I I Code RATING I I 2"- 2"1/2 - 3" - 4" - 5" - 6" - 8" - 10" (for 1220T and 1220B types) I I 1"1/4 - 2" - 3" (for 1200 T and 1200B types) I I I Code DESIGN BODY MATERIAL FLAP MATERIAL CONNECTIONS I I I I I I Series 1200T I I I C1 Carbon steel 316L ST.ST. BSPP threaded I I I C2 316L ST.ST....