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B-Series NEMA 7 Pressure Switch
Brand: Ashcroft IncThe Ashcroft® B7 Pressure Switch is designed for use in virtually all industrial and OEM applications.
This model provides accuracy, reliability and long-cycle life, while the rugged, explosion-proof housing provides superior protection.
Ideal for satisfying requirements for pressure control, safety shutdown or alarm operations in hazardous applications.
Specifications:
- Accuracy: ±1.00% full scale
- NEMA 7 & 9 (IP66) enclosure
- Single setpoint
- Pressure ranges: vacuum to 3,000 psi
- SPDT or DPDT switching option
- Explosion-proof enclosure provides uncompromising protection
- Adjustable from 15%-100% of range
- Fixed or limited adjustable deadband
- Wide selection of switch elements and wetted materials
Specifications
Brand
Adjustment Type
- Factory Set (Pre-Set)
- Field Adjustable
Approvals & Certifications
- ATEX
- CSA
- Dual Seal
- FM
- IEC Ex
- UL
Burst Pressure
- bar: 2.4 to 1,241
- kPa: 241.32 to 124,105
- psig: 35 to 18,000
Deadband, Approximate
- bar: 0.01 to 22.68
- kPa: 1.38 to 2,268
- psig: 0.2 to 329
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
- 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
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
Environmental Protection
- IP66
- NEMA 7, 9 / IP66
- NEMA 9
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 206.8
- Inches WC: -15 to 150
- kPa: 103.4 to 20,680
- psi: 15 to 3,000
Process Connection Material
- 316 Stainless Steel
Proof Pressure
- bar: 1.38 to 827
- kPa: 137 to 82,737
- psig: 20 to 12,000
Set Point - Decreasing
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: -15 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Set Point - Increasing
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: -30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Switch Type
- 2 SPDT
- SPDT
System Pressure
- bar: 0 to 827
- Inches Hg: -30 to 0
- Inches WC: -30 to 150
- kPa: 0 to 82,737
- psig: 0 to 12,000
- Corrosive Environments
- Offshore Platforms, Pipelines
- Power Plants
- Pulp & Paper
- Refining, Chemical, Petrochemical
- Steel Mills
- Water Treatment
