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D-Series NEMA 7 Differential Pressure Switch
Brand: Ashcroft IncThe Ashcroft® D7 Differential Pressure Switch is designed for applications requiring safety, reliability and long-cycle life.
It is ideal for satisfying requirements for pressure control, shutdown or alarm operations.
Specifications:
- Accuracy: ±1.00% full scale
- NEMA 7/9 (IP66) aluminum enclosure Class 1, Div 1, Groups B, C and D / Class II, Div 2, Groups E, F and G
- Single setpoint
- Differential pressure ranges: 10" IWD to 600 psid
- Adjustable setpoint from 15-100% of range
- Explosion-proof enclosure provides uncompromising protection
- Fixed or limited adjustable deadband
- Wide selection of switch element and wetted materials
Specifications
Brand
Electrical Contacts
- Gold
Deadband, Approximate
- bar: 0.03 to 14.48
- kPa: 3.45 to 1,448
- psid: 0.5 to 210
Options
- Fungus Proofing
- Paper Tag
- Stainless Steel Tags
System Pressure
- bar: 1.034 to 413.7
- Inches WC: 30 to 150
- kPa: 103.4 to 41,370
- psi: 15 to 8,000
Mounting
- 2” Pipe Mounting Bracket
- Wall Mounting Bracket (”H 2O)
Switch Type
- 2 SPDT
- SPDT
Process Connection Material
- 316 Stainless Steel
Approvals & Certifications
- ATEX
- CSA
- Dual Seal
- FM
- IEC Ex
- UL
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
- 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)
- Narrow Deadband
- Sealed Environment Proof
Diaphragm Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
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
NPT Connection
- 1/2” NPT Female
- 1/2” NPT Male
- 1/4” NPT Female
O-Ring Material
- Buna-N
- Teflon
- Viton
Pressure Range
- bar: 1.034 to 41.37
- Inches WC: 30 to 150
- kPa: 103.4 to 4,137
- psid: 15 to 600
Operating Temperature
- -29° to 66° C (-20° to 150° F)
Environmental Protection
- IP66
- NEMA 7, 9 / IP66
- NEMA 9
Adjustment Type
- Factory Set (Pre-Set)
- Field Adjustable
Electrical - Free Leads
- 16” (41 cm) Free Leads
Proof Pressure
- bar: 137.9 to 413.7
- Inches WC: 21.6
- kPa: 13,790 to 41,370
- psi: 2,000 to 8,000
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
Electrical Connectors
- 3/4” NPT Female
- M20 Male
- Corrosive Environments
- Offshore Platforms, Pipelines
- Power Plants
- Pulp & Paper
- Refining, Chemical, Petrochemical
- Steel Mills
- Water Treatment