D-Series NEMA 7/9 Explosion Proof Differential Pressure Switch
The Ashcroft® D7 NEMA 7/9 differential pressure switch is designed for applications requiring safety, reliability and long-cycle life. It is ideal for satisfying requirements for differential pressure control, shutdown or alarm operations in hazardous locations.
Key Features:
- Adjustable setpoint from 15-100% of range
- Explosion-proof enclosure provides uncompromised protection
- Fixed or limited adjustable deadband
- Wide selection of switch element and wetted materials
- External locking screw (ATEX / IECEx approval only)
- Ranges from 30 in. H2O to 600 PSID
- UL, CSA, ATEX, IECEx hazardous approvals
- FM, CE and CRN approved
- SIL 3 capable
- RoHS Compliant
Applications:
Process Market:
Offshore Oil Rigs
Chemical and Petrochemical Plants
Pulp and Paper Mills
Power Plants
Steel Mills
Water and Sewage Treatment Facilities
Industrial Market:
Pumps, Compressors and Turbines
Washers and Filters
Degreasers and Evaporators
Recovery Systems
Reverse Osmosis Systems / Filters
Food Processing
Ground Support Equipment
Hydraulic and Lubrication Systems
Heating and Air Conditioning
Marine Equipment
Specialized OEM Equipment
Specifications
Certifications & Approvals
Data Sheets & Instruction Manuals
Drawings & Product/Technical Information
Setpoint Repeatability (Accuracy)
±1% of span (Additional setpoint shift of ±1% of range per 50°F from initial setpoint set at 70°F typical)
Setpoint
Single setpoint - Factory set or field adjustable
Deadband
Fixed or limited adjustable
Enclosure Ratings
NEMA 7/9, IP66
Enclosure Material
Epoxy coated aluminum or 316 stainless steel
Pressure Connection
¼ NPT Female (STD.)
½ NPT Female, ¼ NPT Female & ½ NPT Male combo (OPT.)
Electrical Termination
½ NPT Female, M20 X 1.5 (OPT.)
Diaphragm/Actuator Material
Buna-N®, Teflon®, Viton®, 316L stainless steel, or Monel®
Pressure Ranges
30 in. H2O differential thru 600 psid
Ambient Temperature Range
-20°F to 150°F (-29°C to 65°C)
Process Temperature
0°F to 150°F (Buna N or Teflon diaphragm)
0°F to 300°F (Stainless steel or Monel diaphragm)
20°F to 300°F (Viton diaphragm)
Contact Ashcroft
Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.