Dual-Action 防爆双点压力开关 H2A
H2系列双设定点防爆压力开关，可根据液体或气体压力的增加或减少，对两种不同的动作进行排序。该设计包括两个同心活塞操作一个单一的隔膜与一个压力室。每个活塞带动一个独立的开关。开关可以调整到一起工作，在范围的两端或在两个中间设置点。将螺纹顶部拆卸到现场调节或服务开关上，不会干扰电气或压力连接。Duotect®开关是防爆和耐候的。它可以安装在任何位置，不受振动影响
Wetted Materials:
316 SS chamber with FEP diaphragm and Buna-N O-ring standard. Fluoroelastomer or EPDM O-ring optional.
Temperature Limit:
275°F (135°C). CSA approved: -20 to 90°C (-4 to 184°F).
Pressure Limit:
1500 psig (103 bar).
Enclosure Rating:
UL listed explosion-proof, Class I, Groups B, C, and D. Class II Groups E, F, and G. Meets NEMA 4X (IP66). CSA optional. Class I, Groups B, C & D. Class II, Groups E, F, & G -20°C ≤ Tamb ≤ 75°C T6 [optional -20°C ≤ Tamb ≤ 40°C T5] Type 4.
Switch Type:Two SPDT snap switches.
Electrical Rating:5 A @ 125/250 VAC, 5 A res., 3 A ind. @ 30 VDC. Gold contacts optional.
Electrical Connections:18 AWG, 18" (460 mm) long.
Conduit Connection:3/4" female NPT.
Process Connection:1/4" female NPT.
Mounting Orientation:Any position.
Set Point Adjustment:Internal nut.
Weight:2 lb (.9 kg).
Deadband:Approximately 10% of range.
Agency Approvals:CSA, UL.
| Model |
Description |
| H2S-1 |
Duotect® dual-action explosion-proof pressure switch, 3-40 psig (0.21-2.76 bar) low range, 5-75 psig (0.35-5.17 bar) high range |
| H2S-2 |
Duotect® dual-action explosion-proof pressure switch, 25-250 psig (1.72-17.2 bar) low range, 30-400 psig (2.07-27.6 bar) high range |
| H2S-3 |
Duotect® dual-action explosion-proof pressure switch, 100-1000 psig (6.89-68.9 bar) low range, 150-1500 psig (10.3-103 bar) high range | |
