Dwyer产品 1950系列防爆型微差压开关美国德威尔压差表流量计差压计差压开关差压变送器

1950系列防爆型微差压开关
产品说明：
1950型防爆差压开关综合了1900系列差压开关的所有性能，再配备防爆或全天候的防护外壳，使其应用更加广泛，应用价值也更高。它有CE,UL和CSA，FM认证，防爆级别为Class I, Div 1, Groups C and D, Class II Groups E, F, and G and Class III hazardous atmospheres NEMA 7 & 9. Raintight NEMA 3 (IP54)。全天候防护外壳上带有排水堵头和O型环密封，打开前盖板就能很容易接线。可在防护外壳的外面调整设定点。有12种型号供选择，从0.03＂到220＂英寸水柱（7.5到5000PA）和从0.5到50psi（0.035到3.5Bar）。1950型防爆差压开关体积小，重量轻，体积和重量相当于其它防爆开关的一半。
警告：只能用于空气或兼容气体。当在危险场合和单正压的情况下使用时，必需进行特殊的通风排气。nclosure does not possess any agency approvals.
产品规格：
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
Temperature Limits: -40 to 140°F (-40 to 60°C); 0 to 140°F (-17.8 to 60°C)for 1950P-8, 15, 25, and 50. -30 to 130°F (-34.4 to 54.4°C) for 1950-02.
Pressure Limits: Continuous: 1950's - 45" w.c. (0.11 bar); 1950P's - 35 psi (2.41 bar); 1950P-50 only - 70 psi (4.83 bar). Surge: 1950's - 10 psi (0.69 bar); 1950P's - 50 psi (3.45 bar); 1950P-50 only - 90 psi (6.21 bar).
Enclosure Rating: NEMA 3 (IP54), NEMA 7 and 9.
Switch Type: Single-pole double-throw (SPDT).
Electrical Rating: 15 A @ 125, 250, 480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz.
Electrical Connections: 3 screw type, common, normally open and normally closed.
Process Connections: 1/8" female NPT.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Screw type on top of housing.
Weight: 3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg).
Agency Approvals: CE, CSA, FM, UL.