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 | Dwyer
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
Documents and manuals
Dwyer H2S-1 Documents
Overview
Details for 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
SERIES H2 DUAL-ACTION EXPLOSION-PROOF PRESSURE SWITCHES
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.
Reviews
