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Documents: H2S-2

Instruction Manual Series H2 Catalog Page More Info

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 | Dwyer

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

Brand: DwyerSKU: H2S-2

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Overview Details for H2S-2

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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

SERIES H2 DUAL-ACTION EXPLOSION-PROOF PRESSURE SWITCHES

Explosion-proof and Weatherproof Enclosure

Explosion-Proof, UL & CSA Listed for Class I, Groups B, C & D and Class II, Groups E,F & G. The Series H2 Dual-Action Explosion-Proof Pressure Switch is designed forsequencing two different actions as pressure of a liquid or gas increases or decreases.The design consists of two concentric pistons operated by a single diaphragm with onepressure chamber. Each piston actuates a separate switch independent of the other.The switches may be adjusted to operate together, at opposite ends of the range orat two intermediate set points. The threaded top is removed to field adjust or serviceswitches without disturbing electrical or pressure connections. The Duotect® switchis explosion-proof and weatherproof. It can be mounted in any position and is notaffected by vibration.

Product Applications

Mechanical HVAC or process equipment
Chemical, petroleum, food and drug processing industries
Process and Industrial applications

Explosion-proof and weatherproof housing provides device protection for outdooruse or harsh environment operation
UL listed, CSA approved to support rigorous process applications and regulations
Independent piston action design for either gas or liquid allows switches to activetogether or independently based on settings
Mounting in any position and not affected by vibration provides reliable switching forequipment

Specifications

Series: H2 DUAL-ACTION EXPLOSION-PROOF PRESSURE SWITCHES
Category/Type: Pressure
Type: Single Pressure
Series: H2 DUAL-ACTION EXPLOSION-PROOF PRESSURE SWITCHES
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.