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D-Series NEMA 4 Differential Pressure Switch
Brand: Ashcroft Inc.The Ashcroft® D4 Differential Pressure Switch is designed for use on most applications requiring reliability and long-cycle life.
Ideal for satisfying requirements for pressure control, shutdown or alarm operations.
Specifications:
- Accuracy: ±1.00% full scale
- NEMA 4X (IP66) aluminum enclosure
- Single setpoint
- Differential pressure ranges: 10" IWD to 600 psid
- SPDT or DPDT switching option
- Adjustable setpoints from 15%-100% of range
- Fixed or limited adjustable deadband
- Wide selection of switch elements and wetted materials
- Specials designs for NACE and fire-safe applications
Specifications
Brand
Adjustment Type
- Factory Set (Pre-Set)
- Field Adjustable
Applications
- Corrosive Environments
- Offshore Platforms, Pipelines
- Power Plants
- Pulp & Paper
- Refining, Chemical, Petrochemical
- Steel Mills
- Water Treatment
Approvals & Certifications
- CSA
- FM
- UL
Deadband, Approximate
- bar: 0.03 to 14.48
- kPa: 3.45 to 1,448
- psid: 0.5 to 210
Diaphragm Material
- Buna-N
- Monel®
- Stainless Steel
- Teflon
- Viton
Electrical - Free Leads
- 16" (41 cm) Free Leads
Electrical Connectors
- 3/4" NPT Female
- M20 Male
Electrical Contacts
- Gold
Electrical Rating
- 1 A at 125/250 Vac
- 10 A, 125 / Vac or DC, 1/8 hp 125 Vac or DC
- 11 A, 125/250 Vac, 5 A, 30 Vdc
- 15 A, 125/250 Vac
- 15 A, 125/250/480 Vac, 1/2 A, 125 Vdc, 1/4 A, 250 Vdc
- 5 A at 125/250 Vac
Element
- Ammonia Service
- Dual Elements
- General-purpose
- Heavy Duty AC
- Heavy Duty DC
- Hermetic Seal Switch, General-purpose
- Hermetic Seal Switch, Narrow Deadband
- Hermetic Seal, Gold Contacts
- High Temperature 149° C (300° F)
- Low Level (Gold Contacts)
- Manual Reset on Decreasing Pressure
- Manual Reset on Increasing Pressure
- Narrow Deadband
- Sealed Environment Proof
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
Environmental Protection
- IP54
- IP66
- NEMA 13
- NEMA 3, 4, 4X, 13 / IP54, 66
- NEMA 4
- NEMA 4X
Mounting
- 2" Pipe Mounting Bracket
- Wall Mounting Bracket ("H 2O)
NPT Connection
- 1/2" NPT Female
- 1/2" NPT Male
- 1/4" NPT Female
O-Ring Material
- Buna-N
- Teflon
- Viton
Operating Temperature
- -29° to 66° C (-20° to 150° F)
Options
- Fungus Proofing
- Paper Tag
- Stainless Steel Tags
Pressure Range
- bar: 1.034 to 41.37
- Inches WC: 30 to 150
- kPa: 103.4 to 4,137
- psid: 15 to 600
Proof Pressure
- bar: 137.9 to 413.7
- Inches WC: 21.6
- kPa: 13,790 to 41,370
- psi: 2,000 to 8,000
Set Point - Decreasing
- 30" WC to 600 psid
- bar: 1.034 to 41.37
- Inches WC: 30 to 150
- kPa: 103.4 to 4,137
- psid: 15 to 600
Set Point - Increasing
- 30" WC to 600 psid
- bar: 1.034 to 41.37
- Inches WC: 30 to 150
- kPa: 103.4 to 4,137
- psid: 15 to 600
Switch Type
- 2 SPDT
- SPDT
