Explosion-proof, UL & CSA Listed for ClassI, Groups B, C & D and Class II, Groups E, F & G. The H2 isdesigned for sequencing two different actions as pressure of a liquid or gasincreases or decreases. The patented design consists of two concentric pistonsoperated by a single diaphragm with one pressure chamber. Each piston actuatesa separate switch independent of the other. The switches may be adjusted tooperate together, at opposite ends of the range or at two intermediate setpoints. The threaded top is removed to field adjust or service switcheswithout disturbing electrical or pressure connections. The Duotect® switch isexplosion-proof and weatherproof. It can be mounted in any position and is notaffected by vibration.
| EXAMPLE | H2 | A | 1 | CSA | Series H2A-1-CSA Dual-Action Explosion-ProofPressure Switch, aluminum housing, low range 3-40 psi, high range 5-75 psi,with CSA approval. |
| SERIES | H2 | Dual-Action Explosion-Proof Pressure Switch | |||
| HOUSING | A B S |
Aluminum Brass Stainless Steel |
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| RANGE | 1 1S 2 2S 3 3S |
Low Range 3-40 psi, High Range 5-75 psi 3-75 psi Low Range 25-250 psi, High Range 30-400 psi 25-400 psi Low Range 100-1000 psi, High Range 150-1500 psi 100-1500 psi |
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| OPTIONS | CSA MV PRESET ST VIT EPDM TF |
CSA Approval Gold Contact Switch Preset Stainless Steel Tag Fluoroelastomer O-rings Ethylene Propylene O-rings FEP Diaphragm |
