差别压力开关

Applications Air and other non-combustible, non-aggressive gases Monitor overpressure, vacuum and differential pressure for air and compatible gases. Possible applications are: monitor air filters and ventilators monitor air status in heating and cooling circuits monitor flows in ventilation duct other applications Specifications Adjustable range: 4 ranges selectable, different engineering units available, see modelsPressure limit: 7500PaWorking temperature: -20 85°CStorage temperature: -40 85°CPressure connection: φ6.0mmplastic pipe, P1 high andP2 low pressureService life: over106 switching cyclesElectrical Contact: SPDT, max. 2A/250VAC, max. frequency 6 switching cycles/minElectrical connection: 3 screw terminalsRepeatability: ±2%Materials: housing PC, cover PC, diaphragm silicone and contact silverWeight: 140gwith bracket, 90g without bracketProtection: IP54 with cover Installation: vertical, pressure ports P1 and P2 downward. This is the factory-calibrated position. If horizontally installation needed, the switching value should plus about 20pa (cover upward) and minus about 10pa (cover downward). See operation manual. Accessory: the pressure connection set (part number 1001) includes plastic pipe 2m, 2 pressure connection parts and 4 screws. Structure 1.Bracket for installation2.Diaphragm3.P1 high pressure or low vacuum4.P2 low pressure or high vacuum5.Scale dial (switching point setting)Remark: it is for the one with bracket, the left one in the upper left picture of this page. Another style with installation ear is the right one in the picture. The two styles are for different applications. Their internal structures are the same. Models 609. X X X Scales for different units Enclosure With install ear 0 No ear, with bracket 1 mbar inch wc mm wc Adjustable range 20-300Pa 0 0.2-3 0.08-1.2 2-30 50-500Pa 1 0.5-5 0.2-2 5-50 100-1000Pa 2 1-10 0.4-4 10-100 0.5-2.5KPa 3 5-25 2-10 50-250 Engineering unit Pa 0 mbar 7 inch wc 8 mm wc 9