专业销售_FEMA压力开关_压力变送器_费玛压力开关_费玛压力变送器_菲玛压力开关_菲玛压力变送器
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专业销售_FEMA压力开关_压力变送器_费玛压力开关_费玛压力变送器_菲玛压力开关_菲玛压力变送器 |
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菲玛FEMA压力开关/压力变送器Type series DNS/VNS系列资料选型 |
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| Technical data Pressure connection External thread G 1/2 (pressure gauge connection) according to DIN 16 288 and internal thread G 1/4 according to ISO 228 Part 1. Switching device Robust housing (200) made of seawater resistant die cast aluminium GD Al Si 12. Protection class IP 54, in vertical position. Pressure sensor materials Pressure bellows and all parts in contact with medium. X 6 Cr Ni Mo Ti 17122 Material no. 1.4571 Mounting position Vertically upright and horizontal. Max. ambient temperature at swit- ching device –25…+70 °C. Max. medium temperature The maximum medium temperature at the pressure sensor must not exceed the permitted ambient temperature at the switching device. Temperatures may reach 85°C for short periods. Higher medium temperatures are possible provided the above limit values for the switching device are ensured by suitable measures (e.g. siphon). Mounting Directly on the pressure line (pressure gauge connection) or on a flat surface with two 4 mm Ø screws. Switching pressure Adjustable from outside with screw driver. Switching differential For values see Product Summary. Contact arrangement Single pole change over switch. Plastic coating The diecast aluminium housing in GD Al Si is chromated and stove enamelled with resistant plastic. Corrosion tests with 3% saline solution and 30 temperature changes from +10 to +80°C showed no surface changes after 20 | ||||||||||||||||||||||
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